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Anyone ever try to use H1000 powder while reloading 458 win mag? If so, what was your recipe?
H1000 and 458 win mag
- Thread starter photog_shooter
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I use Re19 with 500gr bullets (not quite as slow - #122 on the burn rate scale vs. #140 for H1000) in my .458 Lott. Compressed load and muzzle speed is around 1800 fps. Not sure how H1000 would do - likely a lower muzzle speed??
http://www.wwpowder.com/PDF/Burn%20Rates%20-%202015-2016.pdf
http://www.wwpowder.com/PDF/Burn%20Rates%20-%202015-2016.pdf
nowarningshot
CGN Ultra frequent flyer
H1000 sounds slow. Would seem to me IMR 3031, 4895.....maybe to about H4831.
Eagleeye, and Ganderite should be along soon.
Eagleeye, and Ganderite should be along soon.
H1000 is way too slow. Can't get enough H1000 in the 458 winmag case to make anywhere near useful pressure. Expect dirty, uncomplete powder burn, very low pressure. Not a good idea. Looking at powders in the 4198 - 3031 range.
Good points. Should also be very economical as one can sweep up the unburned powder and re-use it.
Pretty MUCH ! like a 45-70 ! lol RJ
The person posting has failed to return. Baiting?
Wonder if he ever tried it but it does bring to mind the comment from Will Rogers.
Some people learn by reading . . .
Some people learn by being told . . .
Others just have to PI$$ on an electric fence!
Wonder if he ever tried it but it does bring to mind the comment from Will Rogers.
Some people learn by reading . . .
Some people learn by being told . . .
Others just have to PI$$ on an electric fence!
I read the title of the thread and said no no no!
This could be a recipe for disaster. A case full under a 500gr bullet would make about 25,000psi & 1500 fps MV. Powder charge as likely to produce a Secondary Explosion Effect
http://africanxmag.com/secondary_explosion_effect.htm
This could be a recipe for disaster. A case full under a 500gr bullet would make about 25,000psi & 1500 fps MV. Powder charge as likely to produce a Secondary Explosion Effect
http://africanxmag.com/secondary_explosion_effect.htm
RJ- Location
- Next to Santa Claus. ᑯᒡᓗᒃᑐᒃ ᓄᓇᕗᑦ
Ok look, I asked a simple question and all I needed was a simple yes or no answer. You can take your smart ass comments and shove them where the sun don't shine.
Actually the SEE effect, while being hard to reproduce at will, invariably occurs with a case that is only partially full of powder.
If the case is right full, regardless of the powder or the reduction in the charge, this does not occur. D.
In the 458 Win Mag, any full case of a powder slower than about IMR4064 would be safe to use with any bullet weight, right up to 500 grs.
What has been suggested is a very common long-standing practice with cast bullet shooters in the US where surplus powders are very cheap, e.g. WC-872, which is quite a bit slower than H1000.
Cast bullet shooters are not all about maximum MV, in fact they want a relatively low pressure load. Some of the results they've posted show very good accuracy.
I have not done this in the 458 Win Mag (though I own one), but I have used US869 in several medium bore cartridges under cast and jacketed bullets (e.g. 303 Brit, 8X57). In those few attempts it wasn't my most accurate, nor economical load, but it was something I wanted to try. My biggest success was a compressed load of BL-C(2) in the 500 S&W (58.0 grs under a cast 440 gr bullet). You won't find that in any load manual and its MV was modest (far less than what could be achieved with much faster Longshot), but it was accurate. H4198 was a close second.
More guys need to be like the OP - just because a load doesn't show up in a load manual doesn't mean that it's unsafe or wouldn't be accurate. Load testing is expensive and the vast majority of reloaders want high MV's. That's one reason why you'll never see a 458 Win Mag load using H1000, but if a guy came upon a very large quantity for cheap, it could be used. There's a certain satisfaction in creating your own load as well - I got over the thrill of simply closely following "cookbook" loads in a few months, and many of my best loads aren't published anywhere for the reasons mentioned.
What has been suggested is a very common long-standing practice with cast bullet shooters in the US where surplus powders are very cheap, e.g. WC-872, which is quite a bit slower than H1000.
Cast bullet shooters are not all about maximum MV, in fact they want a relatively low pressure load. Some of the results they've posted show very good accuracy.
I have not done this in the 458 Win Mag (though I own one), but I have used US869 in several medium bore cartridges under cast and jacketed bullets (e.g. 303 Brit, 8X57). In those few attempts it wasn't my most accurate, nor economical load, but it was something I wanted to try. My biggest success was a compressed load of BL-C(2) in the 500 S&W (58.0 grs under a cast 440 gr bullet). You won't find that in any load manual and its MV was modest (far less than what could be achieved with much faster Longshot), but it was accurate. H4198 was a close second.
More guys need to be like the OP - just because a load doesn't show up in a load manual doesn't mean that it's unsafe or wouldn't be accurate. Load testing is expensive and the vast majority of reloaders want high MV's. That's one reason why you'll never see a 458 Win Mag load using H1000, but if a guy came upon a very large quantity for cheap, it could be used. There's a certain satisfaction in creating your own load as well - I got over the thrill of simply closely following "cookbook" loads in a few months, and many of my best loads aren't published anywhere for the reasons mentioned.
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I was under the impression it was also because of lower than normal chamber pressure. But, good point. I would suggest Retumbo instead of H1000 for the 458. Maybe pack in some coffee grounds too, can't hurt burn rate
I don't know that this thread was started with cast bullets in mind, but...
Using a slower powder than considered "optimal" with cast bullets can reduce some types of leading in some situations. In theory slower burning powder doesn't have as abrupt or steep pressure rise and the bullet is not accelerated as quickly because of it. If there is leading in the first section of rifling past the leade then it might be from alloy shearing as the accelerating bullet hits the rifling and starts to spin. If acceleration can be spread over a longer distance then it may reduce leading in the start of the rifling in the bore if you are getting it with faster burning powders. It's worked for me in 45-70 and 458 winmag.
I did mess around with some slower powders in the 458 with cast bullets for those reasons. H1000 could be more useful in bottleneck cartridges but maybe not in straight walled cases in my experience. Anything slower than IMR4350 didn't burn worth crap in the 458 and literally half the powder is dumped on the ground unburned.
Using a slower powder than considered "optimal" with cast bullets can reduce some types of leading in some situations. In theory slower burning powder doesn't have as abrupt or steep pressure rise and the bullet is not accelerated as quickly because of it. If there is leading in the first section of rifling past the leade then it might be from alloy shearing as the accelerating bullet hits the rifling and starts to spin. If acceleration can be spread over a longer distance then it may reduce leading in the start of the rifling in the bore if you are getting it with faster burning powders. It's worked for me in 45-70 and 458 winmag.
I did mess around with some slower powders in the 458 with cast bullets for those reasons. H1000 could be more useful in bottleneck cartridges but maybe not in straight walled cases in my experience. Anything slower than IMR4350 didn't burn worth crap in the 458 and literally half the powder is dumped on the ground unburned.
