Different Powder Lots

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Different Powder Lots

Postby eastcoastsoxfan » Thu Oct 17, 2013 6:04 pm

Eventually I'm gonna run out of lot#15 Steel Powder, I have some lot#17. Are 17 and 15 close? will I have to re pattern my loads again when I switch to a different lot? :fingerhead:

Thanks
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Re: Different Powder Lots

Postby lostknife4 » Fri Oct 18, 2013 5:00 pm

Doubledutchchuck would be a good one to ask this question however I believe the change in energy by Lot # hit it's peak at Lot #12, I stand to be corrected on this but all my ASteel is in the lower Lot numbers.
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Re: Different Powder Lots

Postby DoubleDutchChuck » Fri Oct 18, 2013 6:30 pm

As Lost stated, and which I agree with, the powders lots from #15 and later run very similar to one another. At least they do when comparing velocities across the chrono. Lot #17 may be slightly hotter than 15, but you won't notice any difference on the pattern board.Then last summer, I bought a one pound and 4 pound canister of Steel, neither having a lot number stamped on them. When I ran them across the chrono, the velocities they produced were exactly then same as the Lot 17 I have tested, and patterned identically. You can re-pattern your loads if you like, for self assurance, but I don't believe it is necessary, IMO.
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Re: Different Powder Lots

Postby eastcoastsoxfan » Fri Oct 18, 2013 6:46 pm

Thanks, Good to know, I don't really wanna re pattern all those loads again at the same ranges.
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Re: Different Powder Lots

Postby BBK » Fri Oct 18, 2013 7:19 pm

Where do you find the lot # on the jug?
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Re: Different Powder Lots

Postby Sagebrush » Fri Oct 18, 2013 10:36 pm

My new Steel powder lost fps when the same load was put over my chrony but only 80 fps for the
"1550" fps #107 load that ran 1530 fps when I tested it six years ago. my loads now run 1470 fps.

This is in my gun..........yours will generally have different figures due to " x,y, & z ".
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