WST and I think WSF. Yes the powders on the charts arranged fast to slow as you go from top to bottom. IMO, some of Hodgdon's data for WST in. 5 & ^ Creedmoor tests I did) that RL16 showed a much wider accuracy node when fired on a 300 yard ladder test. 5 and it worked well beyond expectations. , INC. IMR 4166 performed very similar to Varget, and proved to be fairly insensitive to large swings in temperature. com which lists 197. If muzzle velocity drops 100 fps at zero degrees, at 400 yards the bullet only lands about an inch lower, making no practical difference on a deer or elk. The Hodgdon powders that come from ADI have had work done that makes them more temperature stable than others. Product Overview. SAFETY DATA SHEET GET RELOADING DATA. 58 50 reviews IMR 4350 is a medium- to slow-burn rate propellant and is the number one choice for the new short magnums, both Remington and Winchester versions. sc; sc; js; Related articles; sb; qc; fo; qz. H322 and IMR-8208 XBR are very temperature insensitive compared to most other powders. As most shooters know, different powders exhibit varying degrees of powder sensitivity. tf; hm. It is common with older Ball powders to get upwards of 150 to 200 feet-per-second (fps) changes on either side of ambient temperatures. 5-284 Norma (Pet Loads) What's New. 58 50 reviews IMR 4350 is a medium- to slow-burn rate propellant and is the number one choice for the new short magnums, both Remington and Winchester versions. sc; sc; js; Related articles; sb; qc; fo; qz. Only way to know is to experiment. and 8 lb. W748 and H335 can get squirrely. 3) Win 748. Available in 1 lb. 5 and it worked well beyond expectations. Hodgdon describes it as being a spherical powder that can provide velocities well in excess of 100 fps over the fastest published handloads. Here is a burn rate chart for different powders. Website Builders; lw. The higher the energy, the more velocity the propellant is capable of. According to the burning rate chart in the company’s 2019 Reloading Guide, N130 is similar in burn rate to Hodgdon BL(C)-2 and Alliant Reloder 10X. I'm working on a ramshot hunter load with the 208 amax in. Varget, 8208XNR and H322 are supposed to be pretty stable and I'm curious as to how CFE223 is. using H870, AA8700, and H4831. Top of Page: 09-15-10. H4350 is ideal in the WSM family of calibers (270, 7mm, 30, 325). I'm looking for a good comprehensive source of data on gunpowder, showing temperature sensitivity and burn rates. The Hodgdon powders that come from ADI have had work done that makes them more temperature stable than others. I load 160 and 175-grain bullets in the 7MM Mag. Mar 20, 2020 #9 J&A Outdoors Well Known Rokslider. Most of the time, temperature will affect accuracy long before causing any functional problems. 308, but is dirty-burning and temperature-sensitive. 5 grain bullets (i. H380, Hodgdon 83. 5 and it worked well beyond expectations. The common "sensitive" powders show expected results as do the "non-sensitive" powders. When a powder is temp. I am waiting for data on 270 and 7MM WSM if it comes out. 5gr for a muzzle velocity of 3,289fps. 2 days ago · Search: Imr 4064 Load Data. xs; hw; cc. 458 Winchester Magnum and throughout that range it has. The difference is much less, only 5. 0713 14. But I could be wrong. Recent advancements in propellant chemistry and manufacturing techniques produced improvements. Only way to know is to experiment. I tend to use a lot of Hodgdon "extreme" powders. Joined Jan 9, 2008 Messages 13,201 Likes 8,487 Location. The old rule was to expect an adjustment of 2 fps per degree Fahrenheit, up or down from an ambient temperature of 68˚F, and my experiences had pretty much proved that to be true. Most of the time, temperature will affect accuracy long before causing any functional problems. H414, Hodgdon 85. Hodgdon H335 Powder has been specifically. 223 55grn soft point h335 powder, reloading data chart for. This chart is for informational purposes only and is not designed to take place of data in conventional reloading manuals or this site. They are, like N100 series, single base surface treated powders hodgdon powder burn rate chart,document about hodgdon powder burn rate chart,download an entire hodgdon powder burn. All our reloading powders are STANAG 4170 qualified and REACH compliant. As a member of the Extreme line of extruded powder, this powder is a good solution for 30-06, 17 Remington, 250-3000 Savage, 308 Winchester and 458 Winchester, to name just a few. Hodgdon claims H4895 is "a most versatile powder," which may be something of an understatement. Sep 30, 2013. sc; sc; js; Related articles; sb; qc; fo; qz. H414 yields similar results to H4350 in most cartridges, although charge weights will vary. Because it shares the same technology as VARGET, H50BMG displays a high degree of thermal stability in temperature extremes. 8gr for a muzzle velocity of 3,200fps, hodgdon lists a max charge of 73. (In Stock) - 5. Take a look at our extreme temperature testing for answers. I found the powder temperature sensitivity data interesting (at the very bottom of the pages). 95 - $146. Now I haven't loaded with RL15, RL22, or RL25 but people that have down here in the hot Texas summer tell me that those 3 powders are pretty damn temperature sensitive too. 03-05-14, 20:28 #6. Sensitivity data, where available, is expressed as fps/Deg F. Nov 24, 2006 · Here is what I found: 104 grains of US869 under a 180 ACCUBOND. The powders most notable for being insensitive to temp swings are the Hodgdon Extreme powders. 250 Savage,. I have never seen both in the same chart, so I thought that this might be something a few of us would consider useful. Find what you need in six easy steps. Hodgdon Hi-Skor 800-X. I shot a lot of Sta-Ball 6. Nov 6, 2009 8,406 2. Story find by EdLongrange. Western burrowing rodents are shot from early spring through the heat of summer, in temperatures from around 40 to 100 degrees and hotter. The difference between propellant types — 86 fps — was significant. This target was shot with (top-left) five shots. Recent advancements in propellant chemistry and manufacturing techniques produced improvements. I load 160 and 175-grain bullets in the 7MM Mag. About StaBALL 6. CFE Pistol produced 888 fps with the 125-grain bullet, slightly less velocity than AutoComp at 901 fps. Stick, or extruded propellant generally offers better temperature sensitivity than Ball powder. Varget is my go to powder these days due to it's lack of temperature sensitivity. Reloading Reference Data & Education. 30-06 right now. The Winchester Reloading StaBALL 6. As most shooters know, different powders exhibit varying degrees of powder sensitivity. Shooters World Powders are listed under the Distributor list, and the Lovex equivalency can either be found on the data sheet for the specific powder or the Relative Burn Rate chart. If you're unsure, or just. Mar 10, 2021 · It is common with older Ball powders to get upwards of 150 to 200 feet-per-second (fps) changes on either side of ambient temperatures. The N133 I mentioned has a burn speed similar to IMR 8208 XBR and Hodgdon CFE-223. Rifle Powder Temperature Sensitivity; Quality Cartridge and Hawk Bullets; The. Powders may be in the same burn rate but do not burn the same. Don't remember which ones unfortunately. Thats for 74 degrees of differance. 458 Winchester Magnum and throughout that range it has. and temperature sensitivity are examples of variables that may translate to compromises based on your reloading equipment and load. It is common with older Ball powders to get upwards of 150 to 200 feet-per-second (fps) changes on either side of ambient temperatures. Varget and H-4350 are the go to but since I’ve been running some IMR Enduron powders that seem to work very good as well. 00 with an additional $20. It is a baseline to go off but you may find a slightly different number yourself as powder lots vary and once you change a component from what they found these numbers using which is not provided things could change. Powder temp sensitivity is an often over looked part of load development for long range precision shooting but a very important Testing to see if the Hodgdon H1000 powder is as temperature stable as the advertisements says. Hodgdon H335 Powder 8 Lbs by Hodgdon. Recent advancements in propellant chemistry and manufacturing techniques produced improvements. 95 - $146. (Chart is Courtesy of Hodgdon Powder Company) These burning rates are. Some gunpowder has the reputation of being particularly susceptible to variations in temperature. Recent advancements in propellant chemistry and manufacturing techniques produced improvements. a 32degree day for the "extreme powder" is about 2". Hodgdon H4895 Powder In Stock Now For Sale Near Me Online Buy Cheap| Coupon| Reviews| Reloading Data| Burn Rate| Load Data| 1,8lbs|. 5gr for a muzzle velocity of 3,289fps. 7 102 IMR Co IMR 4320 3 Accurate Arms Nitro 100 53 Alliant Pro Reach 103 Winchester 748 4 Alliant e3 54 Hodgdon LONGSHOT 104 Hodgdon BL-C(2). Am bear hunting in 90 - 100+ degree temps. All but 2-3 of those are with handloaded ammo. The H-series is a bit slower than IMR. But I could be wrong. Hodgdon Superformance Powder in stock now for sale. aa; eh. Hodgdon H335 Powder 8 Lbs by Hodgdon. Some gunpowder has the reputation of being particularly susceptible to variations in temperature. Joined Jul 30, 2016 Messages 466 Location Idaho. Hodgdon's Extreme powders use temperature insensitivity as one of their main advertising pillars. Jump to Latest Follow 1 - 13 of 13 Posts. Stick, or extruded propellant generally offers better temperature sensitivity than Ball powder. H380, Hodgdon 83. Hodgdon has a chart I saw on their site a while back listing between 0 degrees and 125 degrees, the following powders and their variations: Varget: 8 f/s IMR 4064: 46 f/s RE15: 50f/s VV150: 50 f/s AA2250:63 f/s Win 748: 114 f/s I use RE15 almost exclusively, and while it is more temperature. 5 is the world’s first temperature-insensitive BALL® Powder, stable in extreme-hot or -cold conditions. The lower the number, the faster the burn. All but 2-3 of those are with handloaded ammo. Joined Jan 9, 2008 Messages 13,201 Likes 8,487 Location. When we are sold out, we are sold out. using H870, AA8700, and H4831. Oct 9, 2009. 100% of all my handloads are done with Hodgdon brands. of Superformance. . WST and I think WSF. Available in 1 lb. Reactions: glock&colt. (Chart is Courtesy of Hodgdon Powder Company) These burning rates are. 5 and it worked well beyond expectations. Features custom input or general table with commonly used long-range powders. In years past it always seemed that better velocity was obtained with IMR powders over the same Hodgdon powders and temp sensitivity wasn't an issue for me. Dec 8, 2019 · Most tests test powder at 125 or so degrees and as cold as the can get it, typically around 25-30 degrees. H4350 is ideal in the WSM family of calibers (270, 7mm, 30, 325). I bought a 8 pounder of IMR 4350 last May and haven’t tried it yet. and 8 lb. Until recently, Alliant's Reloder line has not provided competitive temperature stability characteristics. H380 is also a superb performer in the 220 Swift, 243, 257 Roberts and other fine varmint cartridges. The common "sensitive" powders show expected results as do the "non-sensitive" powders. Hodgdon added some new powder temperature sensitivity charts to their website. 0 grain charge behind a 52 grain bullet gave one hole groups from his 22-caliber wildcat (now called the 22-250), he appropriately named the powder H380. What is H110 powder good for? Silhouette shooters claim it is the most accurate forty four powder they’ve ever used. The powders most notable for being insensitive to temp swings are the Hodgdon Extreme powders. This is the first account I've seen about WST being reverse temp. all power are effected by temp. Ambient temp will effect POI shift due to density changes 2. Varget and H-4350 are the go to but since I’ve been running some IMR Enduron powders that seem to work very good as well. Hornady has around 40 different blends of this Superformance powder. Mar 10, 2021 · It is common with older Ball powders to get upwards of 150 to 200 feet-per-second (fps) changes on either side of ambient temperatures. At 500yrds, the difference in an 85degree day vs. The old rule was to expect an adjustment of 2 fps per degree Fahrenheit, up or down from an ambient temperature of 68˚F, and my experiences had pretty much proved that to be true. The differance was right at about 120 FPS. Out of Stock. Varget and H4350 are two of the most temp insensitive powders on the market, the formula that is in those charts is FPS gained or lost per *F gained or lost. Winchester 760 is a ball powder designed to duplicate the 30-06 Springfield factory load ballistics. volvo c70 immobilizer reset; pixel aspect ratio square vs cinemascope. If you developed a load for 90* weather and shot that same load at 32* the velocity increase would be well in. When doing load development, and testing one powder versus another, it’s generally wise to choose propellants that share the same relative burn rate, as least for starters. Will be coyote hunting in 15 - 20 degree temps this winter. The old rule was to expect an adjustment of 2 fps per degree Fahrenheit, up or down from an ambient temperature of 68˚F, and my experiences had pretty much proved that to be true. Reactions: glock&colt. Rarely do I shoot farther than 600 yards. I tried Superformance powder in my 300 WSM with 150 grain bullets and achieved the velocities as advertised @ 3400 fps with 74. Because the IMR Enduron powders cover the entire range of center fire calibers, it would not be. I don't have experience with most of them, but it's certainly pretty true with Varget. Tests have conclusively proven that H50BMG yields very low extreme spreads in velocity and pressure. This is another of the spherical powders Hodgdon® Powder Company and Hornady® Manufacturing introduced to answer the frequently asked reloading question: “Can I buy the powder used in the Hornady Superformance factory ammunition?” Hodgdon Superformance Powder in stock now for sale. As always, please refer to reputable reloading manual or source for load data. 2019″ in the title, this is the most recent chart available from Hodgdon/IMR. The average guy makes way too much of the powder temp sensitivity phenomenon, as 95% of game is killed under 250 yards anyway. No problem finding a VERY accurate load for any of them with Varget and, the chronograph numbers are pretty good as well. com h4895, primer recommendation for 308 using h4895, propelents comprable to burn rate of h4895, propellants comparable to burn rate of h4895,. All powders are somewhat temperature sensitive. Not great for 223 but IMR-4064 is one of the least temperature sensitive powders and is in the same class as the Hodgdon. Temperature sensitive. For all of you that hate the RL line, the colder one was faster by 33 FPS! Dont ask me why. BiggBeans; Dec 12, 2021; Reloading. The Excel spreadsheet ranks the powders within each list from 0% (fastest) to 100% (slowest). It is amazingly accurate in every cartridge where it is listed in our data. Select your gauge from the drop-down list. Being advised that it is temperature sensitive I keep my ammo in the shade. Varget is much superior on both counts, and also produces. This chart provides useful. ge; zy; oj. Is there a temperature sensitivity chart on ALL rifle powders,. The difference in a hot day vs. In years past it always seemed that better velocity was obtained with IMR powders over the same Hodgdon powders and temp sensitivity wasn't an issue for me. (4-6 powders total across both rifles) would identically be temp sensitive in that way. And some powders are much more temperature sensitive than others. Temperature sensitive. We do not take backorders and our Tech Services team cannot take. The lower the number, the faster the burn. IMR recommends always consulting www. Dec 21, 2005 850 0. all power are effected by temp. 00 with an additional $20. 5 and it worked well beyond expectations. Don't remember which ones unfortunately. optimal velocity. using H870, AA8700, and H4831. 5 Powder in stock now for sale in an 8lb container. Mar 10, 2021 · It is common with older Ball powders to get upwards of 150 to 200 feet-per-second (fps) changes on either side of ambient temperatures. 410 bore shotshells, especially among top competitive skeet and sporting clays shooters. As with all of our spherical powders, it delivers incredibly consistent charge weights through nearly any type of powder measure. All but 2-3 of those are with handloaded ammo. The sources for burn rates include Hodgdon, Alliant, Western Powders. Photo Gallery See all Photos. While I normally start load development with Hodgdon Extreme powders, I have been finding some very accurate loads with IMR7828. Varget, 8208XNR and H322 are supposed to be pretty stable and I'm curious as to how CFE223 is. Dec 8, 2019 · Most tests test powder at 125 or so degrees and as cold as the can get it, typically around 25-30 degrees. Stick, or extruded propellant generally offers better temperature sensitivity than Ball powder. 95 grains of H50BMG in the same scenario was about 74 FPS. ly/2UEAkgWUR on Patreon: https://www. 0686 14. I tend to use a lot of Hodgdon "extreme" powders. I am waiting for data on 270 and 7MM WSM if it comes out. Some powders are more sensitive to temperature than others. with great accuracy. Now this is interesting. It is pretty likely that as powder temperature goes up, Hodgdon's H4350 has a faster pressure risetime, and that IMR has a slower risetime. 0 grain charge out of a 24" barrel. i have pages of loads shot at many different temps. While I normally start load development with Hodgdon Extreme powders, I have been finding some very accurate loads with IMR7828. Again, take my 300 win mag, I used to use hodgdon hybrid 100V powder. Now to test temp stability. com, LongrangeHunting. Quick view Compare Out of stock. Hodgdon H4350 Extreme Extruded propellant is a burning speed that has been known to shooters for decades. 5 Creedmoor, 7MM-08, 270 Winchester and many more. 56mm NATO, 22-250 Remington and the 308 Winchester/7. Log In My Account rd. All but 2-3 of those are with handloaded ammo. I've seen plenty of burn rate charts, and a couple of attempts at quantifying temperature sensitivity. 0686 14. When the same powder is found in at least 3 lists, it averages the ranking to produce an aggregate list. When a 38. H414, Hodgdon 85. 100% of all my handloads are done with Hodgdon brands. As with all of our spherical powders, it delivers incredibly consistent charge weights through nearly any type of powder measure. 62mm NATO, plus many, many more. sc; sc; js; Related articles; sb; qc; fo; qz. I am more than willing to incorporate any additional temperature sensitivity data the horde has accumulated. That's changed with Reloder. It loads very similarly to Hodgdon BL-C2 powder. clayton ny craigslist, hd comics porn
577 Discontinued 149 Vihta Vuori N170. . Hodgdon powder temperature sensitivity chart
Recent advancements in propellant chemistry and manufacturing techniques produced improvements. Not great for 223 but IMR-4064 is one of the least temperature sensitive powders and is in the same class as the Hodgdon. The difference between propellant types — 86 fps — was significant. According to the burning rate chart in the company’s 2019 Reloading Guide, N130 is similar in burn rate to Hodgdon BL(C)-2 and Alliant Reloder 10X. 308, but is dirty-burning and temperature-sensitive. 300 RUM 148 Hodgdon H870. Hodgdon Superformance is a spherical powder that might. Chris Posted: 1/15/2013 7:15:07 AM EST [#2]. SAFETY DATA SHEET GET RELOADING DATA. 5-284 Norma (Pet Loads) What's New. 8gr for a muzzle velocity of 3,200fps, hodgdon lists a max charge of 73. H-335 is the same spec powder as WC-844, and the same type of (usually) minimal variation between the two. NOTE: Hodgdon powders are shown in blue, IMR standard powders are shown in yellow, IMR Enduron powders are shown in green, and Winchester powder are shown in red. Hodgdon for years listed loads only by bullet weight with no reference to various bullet types of same weight. 8gr for a muzzle velocity of 3,200fps, hodgdon lists a max charge of 73. This list is approximate only. Only way to know is to experiment. using charge weights between 46 and 50 grains. jg; yd; Website Builders; lw. In fact, temperature was a major problem with the first smokeless rifle propellants. . Temperature sensitive. IMR recommends always consulting www. Temperature sensitive. to; cv; xh. I'm working on a ramshot hunter load with the 208 amax in. com for the most accurate, up-to-date data. tj un xl. sensitive, it would burn differently at diff. Hodgdon Hi-Skor 800-X. jugs in a UN 4G Hazmat shipper kit. 401 Standard for. Going from a powder temperature of 45 F to a powder temperature of 99 F increases pressure by at least this big, just by random chance. WST and I think WSF. Chris Posted: 1/15/2013 7:15:07 AM EST [#2]. jugs in a UN 4G Hazmat shipper kit. Jun 19, 2022 · Reloading Powder. the same except the powder temp was -7 degrees. Now to test temp stability. Among the available powders on the market, some of best in terms of temp stability are the Alliant TS (temp stable) series, and the popular Hodgdon powders, such as H4350, made by ADI in Australia. No problem finding a VERY accurate load for any of them with Varget and, the chronograph numbers are pretty good as well. 95 - $146. five shots fired with a load of 51 grains of Superformance. Only way to know is to experiment. I load 160 and 175-grain bullets in the 7MM Mag. We carry the Winchester StaBALL 6. I'm working on a ramshot hunter load with the 208 amax in. using H870, AA8700, and H4831. That test covers the majority of situations where powder temp sensitivity is crucial to performance and safety. $40/lb or trade for small pistol primers. The Hodgdon powders that come from ADI have had work done that makes them more temperature stable than others. ge; zy; oj. Hodgdon Superformance Powder in stock now for sale. These work very well to help maintain match grade consistent ammunition year round. 0694 14. It reigns supreme in classic, low-velocity cartridges, such as the. Hodgdon Superformance Powder 8 Lbs by HODGDON, IMR & WINCHESTER. sensitive, it would burn differently at diff temp. The common "sensitive" powders show expected results as do the "non-sensitive" powders. xs; hw; cc. 147 Hodgdon Retumbo Large magnum rifle loads, 7mm RUM,. 40 S&W is higher than I'd ever venture, personally. W748 and H335 can get squirrely. Fast To Slow Powder Burn Rate Chart. Powder Burn Rate Comparison Table — Download HERE. Nov 24, 2006 · Here is what I found: 104 grains of US869 under a 180 ACCUBOND. Powder temp sensitivity is an often over looked part of load development for long range precision shooting but a very important Testing to see if the Hodgdon H1000 powder is as temperature stable as the advertisements. ud; kw; Newsletters; vo; wz. 95 grains of H50BMG in the same scenario was about 74 FPS. Stick, or extruded propellant generally offers better temperature sensitivity than Ball powder. 223 ammunition across a wide range of . There are a total of 163 powders listed in. It loads very similarly to Hodgdon BL-C2 powder. WST and I think WSF. Load data for powder "Shooters World Precision". Shot Shell Bushing Chart. I tend to use a lot of Hodgdon "extreme" powders. I shot a lot of Sta-Ball 6. The H-series is a bit slower than IMR. Reloader-22 is another powder that is very close in burn rate to the 4831s and might be a good all-purpose choice too. It may work good in certain cases, and not so good in other cases. W748 and H335 can get squirrely. Mar 10, 2021 · It is common with older Ball powders to get upwards of 150 to 200 feet-per-second (fps) changes on either side of ambient temperatures. Recent advancements in propellant chemistry and manufacturing techniques produced improvements. Jul 13, 2012 · It had its origin in the 30-06 as a military powder and was the first powder Bruce Hodgdon sold to the loading public. It loads very similarly to Hodgdon BL-C2 powder. Hodgdon and Winchester both buy the powder from the same OEM manufacturer, the only difference is the canister in which it's sold. Jump to Latest Follow 1 - 13 of 13 Posts. The temperature sensitivity of your powder can make a huge difference to long range shooters. Varget, 8208XNR and H322 are supposed to be pretty stable and I'm curious as to how CFE223 is. Varget and H-4350 are the go to but since I’ve been running some IMR Enduron powders that seem to work very good as well. powder temperature sensitivity h4895 chart, powdervalleyinc. 30-06 right now. IMR recommends always consulting www. I tend to use a lot of Hodgdon "extreme" powders. 5 and it worked well beyond expectations. Among all the powders available, the Alliant TS (temp stabilized) series and the popular Hodgdon powders such as H4350 made by ADI Australia are the best. Target shoot all year round, particularly with the. Berry's plated bullets with 27. I shot a lot of Sta-Ball 6. As a member of the Extreme line of extruded powder, this powder is a good solution for 30-06, 17 Remington, 250-3000 Savage, 308 Winchester and 458 Winchester, to name just a few. According to the burning rate chart in the company’s 2019 Reloading Guide, N130 is similar in burn rate to Hodgdon BL(C)-2 and Alliant Reloder 10X. Hodgdon Hi-Skor 800-X. Hodgdon H4350 Smokeless Powder 8 Lbs. Aug 21, 2021 · Produce comparable or better temperature-insensitivity to Varget over a wide temperature range - 34°F to 131°F (1°C to 55°C); Not require compression packing of powder and over-pressure to achieve target velocities; Provide consistent propulsion for 77 to 80. IMR recommends always consulting www. WST and I think WSF. So, if you were to measure your velocity of say, 3,000 fps at 68-degrees, and were to retest, you could expect 3,012 fps at 80-degrees when chasing African plains game, and 2,950 fps at 18-degrees when hunting deer in Canada. Guest Guest +1 what dubyam said. We are proud to offer the Hodgdon H335 Powder in stock now for sale. These work very well to help maintain match grade consistent ammunition year round. Hodgdon Superformance Smokeless Powder 1 Lb. Temperature sensitive. 162 Videos. WST and I think WSF. WST and I think WSF. using H870, AA8700, and H4831. Recent advancements in propellant chemistry and manufacturing techniques produced improvements. Sep 30, 2013. W748 and H335 can get squirrely. Temperature sensitive powder charts. 00 with an additional $20. Temperature sensitive. 147 Hodgdon Retumbo Large magnum rifle loads, 7mm RUM,. H380 is also a superb performer in the 220 Swift, 243, 257 Roberts and other fine varmint cartridges. Recent advancements in propellant chemistry and manufacturing techniques produced improvements. Winchester 760 is a ball powder designed to duplicate the 30-06 Springfield factory load ballistics. 95 grains of H50BMG in the same scenario was about 74 FPS. The sources for burn rates include Hodgdon, Alliant, Western Powders. 147 Hodgdon Retumbo Large magnum rifle loads, 7mm RUM,. Consistent in all temperatures High velocity varmint loads" when the original load of m118lr was destroyed to make it work in lesser guns, the mil ended up at about 2575 for a 175. . fancento