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Posted: 1/11/2010 7:42:29 AM EDT
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I wandered up on 40lbs of H50BMG and 20lbs of US869 couple months ago. It was priced at $100 per 8# so for Hodgdon powder; so I picked it all up figuring you can't get a much better deal. Also picked up all their primers at $100/250 as well. I have several thousand 647g API surplus projectiles I decided to load up for plinking rounds. All of the US869 is in 1# jugs so I decided I would try to use up most of that first. The max load according to both the Hodgdon website and Hornady reloading book calls for 265g of powder using US869 with a 650g projectile. Using that data; I reduced the loads by roughly 10% and round up to 240g .... someone would be hard pressed to put 265g of powder in a 50 BMG case and still have room to seat any type of bullet. Does that load sound about right? Not used to having to put more than 220g in a case .... just seems like an awful lot of powder. Another thing I find interesting is that you can use US 869 in 338 Lapua but there is no load data for H50BMG for 338 Lapua. H50BMG is a much cleaner powder and has nearly the same burn rate .... Sarg |
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Quoted:
I wandered up on 40lbs of H50BMG and 20lbs of US869 couple months ago. It was priced at $100 per 8# so for Hodgdon powder; so I picked it all up figuring you can't get a much better deal. Also picked up all their primers at $100/250 as well. I have several thousand 647g API surplus projectiles I decided to load up for plinking rounds. All of the US869 is in 1# jugs so I decided I would try to use up most of that first. The max load according to both the Hodgdon website and Hornady reloading book calls for 265g of powder using US869 with a 650g projectile. Using that data; I reduced the loads by roughly 10% and round up to 240g .... someone would be hard pressed to put 265g of powder in a 50 BMG case and still have room to seat any type of bullet. Does that load sound about right? Not used to having to put more than 220g in a case .... just seems like an awful lot of powder. Another thing I find interesting is that you can use US 869 in 338 Lapua but there is no load data for H50BMG for 338 Lapua. H50BMG is a much cleaner powder and has nearly the same burn rate .... Sarg I'd start around 220 grains. That US869 is really slow stuff and it's ball powder...fits more densely in a case than extruded H50BMG. I'm sure you can fit the 265 gr in the case but i wouldn't suggest it. Start at around 220 and work you way up, 5 grains or so at a time, always watching for a tight bolt on opening. When it gets tight, backoff 2 grains and consider that your max load. -David Edgewood, NM |
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