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Changing to different lot number #6265921 04/18/16 11:38 PM
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jlsbassman Offline OP
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How far do you back off a load when changing lot numbers of the same powder?

Re: Changing to different lot number [Re: jlsbassman] #6265926 04/18/16 11:45 PM
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scalebuster Offline
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None

Re: Changing to different lot number [Re: jlsbassman] #6266168 04/19/16 01:54 AM
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None but I will load and shoot 10-20 with the new lot over a chronograph.

Re: Changing to different lot number [Re: jlsbassman] #6266181 04/19/16 02:04 AM
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ChadTRG42 Offline
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Depends on the powder. Some powders can have a larger swing from lot to lot. H4350 and Varget are 2 that have huge swings from lot to lot.

I'll try the new lot first to see how fast it shoots with my normal load. Depending on what I get, I will then make an adjustment and possibly re do my load work up from there. I have gained 120 fps with H4350 switching lots when I shot my 260 Rem with 140 VLD's. Since then, I will re verify my load with a new lot. But now, I just buy 2- 8# kegs of same lot so it will last me about a barrel, or about 2600 rounds worth on 16 lbs of powder.


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Re: Changing to different lot number [Re: jlsbassman] #6266204 04/19/16 02:12 AM
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jlsbassman Offline OP
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H4350 is the powder I'm using. I only have enough for about 50 rds left and have been looking for some more.

Re: Changing to different lot number [Re: jlsbassman] #6266402 04/19/16 10:51 AM
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It seems to be nonexistent these days. If you try IMR4451, you might find that it's a good alternative to H4350.


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Re: Changing to different lot number [Re: jlsbassman] #6266472 04/19/16 12:33 PM
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I load lighter than my old load, even with it, and above it. Old lot of H-4350 pushed a 140 A-Max 2800 fps MV with 42.4 gr, out of the 6.5 Creedmoor. When I switched lots I loaded

42.0
42.2
42.4
42.6
42.8

42.8 shot the best and makes 2800 fps MV.


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Re: Changing to different lot number [Re: RiverRider] #6266701 04/19/16 03:24 PM
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Originally Posted By: RiverRider
It seems to be nonexistent these days. If you try IMR4451, you might find that it's a good alternative to H4350.


Big +1.


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