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One of Us |
I am wondering about powders for a 500AccRel class of cartridge (and 500MDM), whether 'light' 450 grain bullets or heavier 570 bullets. What have experiences been with Hodgdon's Varget or the recently released Leverevolution? The Varget is part of the "Extreme" line, which means that it is advertised as relatively temperature insensitive. The Leverevolution is part of the Superperformance Hodgdon line of powder and ammunition. Does anyone have comments about this latter's stability in varying temperatures or in cases much larger than the level rifles it is advertized for? The burning speed chart puts it in the same range with Rel15 and Varget. Any help and experience is appreciated. +-+-+-+-+-+-+ "A well-rounded hunting battery might include: 500 AccRel Nyati, 416 Rigby or 416 Ruger, 375Ruger or 338WM, 308 or 270, 243, 223" -- Conserving creation, hunting the harvest. | ||
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One of Us |
I am going to guess something along the lines of IMR3031 or Benchmark for the heavy bullets and IMR4198 or Rel7 for the lighter bullets. | |||
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Moderator |
my baseling powder is h335.. i haven't shoot any light bullets in the 500 accrel ... but have shot milsurp bullets with it, as well as tons of 600gr .510 bullets from woodleigh i think the super heavy for caliber might need a slower powder.. but the light stuff should be fine with h335 opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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One of Us |
Jeffeoso H335 is pretty fast, right up there with an old 458win powder, IMR 3031. Have you tried the slower Varget or Rel 15 or Leverrevolution with any of the heavier bullets? Any suggestions on load ranges with 570 grainers? Which is the fastest powder that you can fill the case with? +-+-+-+-+-+-+ "A well-rounded hunting battery might include: 500 AccRel Nyati, 416 Rigby or 416 Ruger, 375Ruger or 338WM, 308 or 270, 243, 223" -- Conserving creation, hunting the harvest. | |||
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Moderator |
i have discovered (hah.. more like realized what i had been reading for years) that h335 is the most effective powder in my wildcats... from the 550 express (neals) through the 416 accrel.. the high loading density just works.. i've used h414 760 h4895 i4805 rel15 varget benchmark blc2 h335 748 wc846 and 844 and likely a couple i've forgotten.. these all work.. but the best results have been from h335 .. which works, for me, from 223 to 550 express .. isn't the BEST powder for the smaller guys, but its pretty nice in my 257bob.. i am planning on doing trailboss for reduced loads. i've got a boatload of info posted on www.ammoguide.com .. and its more than worth the annual fee for loading data. the case LOOKS like it ought to perform great with rel15.. so do the "forties" .. and they just don't get max vel with those slower powers.. and quite a few of us have tried. opinions vary band of bubbas and STC hunting Club Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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one of us |
You'l like Trailboss, Jeffe. Now my friends at the camp will actually shoot and enjoy my 550 Magnum. Me too, for that matter. "Experience" is the only class you take where the exam comes before the lesson. | |||
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One of Us |
Very helpful information, and I think I am beginning to understand why H335 works so well. The capacity/bore ratio of the 500 AccRel cartridge is a new game for me. My most common hunting rifles have been 338 wm (with a case grain/bore sq.in. ratio of '753') and the 416Rigby (with a '711' ratio). Those have thrived on slower powders in the 4350 family. The 270Win ('869' ratio) likes things even slower for the heavier weights. For comparison, the 500 AccRel has a ratio of '473' which is very close to the 458 Lott (capacity/bore ratio of '467') This would suggest that the Lott would enjoy similar powders to the 500 AccRel. So I checked the Barnes catalogue, 3th ed. and sure enough H335 scored high and was listed throughout the loads, except for the 500 grain bullets, but including the 600 'original'. Similar and more consistent results are found in the 4th edition, where H335 is a top contender in all of the bullet weights. H335 seems to be a versatile powder. It appears that a person can't go wrong with H335, it's always in the ballpark for ratio of cartridge like 500 AccRel and 458 Lott. Some questions remain: In the 458 Lott loads, H335 tended to be used at 95-99% capacity for various bullet weights. But there were usually one load with a slightly better rating at 100-105% capacity. Filled cases aren't always the best loads, but I like to check out the 99-103% capacity loads. More importantly, I'm looking for 'temperature insensitive' loads, for situations where temperatures climb from 70 F (21) to 116 F (45), just like Texas. Supposedly, the older spherical powders didn't do as well in this regard and gave the old factory-loaded 458 Win a bad name. That's why my curiousity was centering on Varget and the newer Leverevolution. They appear to be too slow except for the heavy bullets. However, if one looks at the Hodgdon 'extreme' powders (advertised as better handling temperature fluctuations) with a similar rating to spherical H335, we find BENCHMARK and H4895. Do you have any notes on temperature fluctuations with H335 or BENCHMARK and H4895 in Texas? Thank you. +-+-+-+-+-+-+ "A well-rounded hunting battery might include: 500 AccRel Nyati, 416 Rigby or 416 Ruger, 375Ruger or 338WM, 308 or 270, 243, 223" -- Conserving creation, hunting the harvest. | |||
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