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#6265921 - 04/18/16 06:38 PM Changing to different lot number
jlsbassman Offline


Registered: 06/18/09
Posts: 436
Loc: Royse City
How far do you back off a load when changing lot numbers of the same powder?

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#6265926 - 04/18/16 06:45 PM Re: Changing to different lot number [Re: jlsbassman]
scalebuster Offline
Veteran Tracker

Registered: 11/25/10
Posts: 2379
None

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#6266168 - 04/18/16 08:54 PM Re: Changing to different lot number [Re: jlsbassman]
Ritter Offline


Registered: 02/15/09
Posts: 266
Loc: Southern Oklahoma
None but I will load and shoot 10-20 with the new lot over a chronograph.
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#6266181 - 04/18/16 09:04 PM Re: Changing to different lot number [Re: jlsbassman]
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 10620
Loc: Lewisville, TX
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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#6266204 - 04/18/16 09:12 PM Re: Changing to different lot number [Re: jlsbassman]
jlsbassman Offline


Registered: 06/18/09
Posts: 436
Loc: Royse City
H4350 is the powder I'm using. I only have enough for about 50 rds left and have been looking for some more.

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#6266402 - 04/19/16 05:51 AM Re: Changing to different lot number [Re: jlsbassman]
RiverRider Offline
THF Trophy Hunter

Registered: 11/11/07
Posts: 6909
Loc: Wise Co.
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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Originally Posted By: Cleric
God I am hating caliber threads more and more

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#6266472 - 04/19/16 07:33 AM Re: Changing to different lot number [Re: jlsbassman]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 20464
Loc: Wolfe City, TX
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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#6266701 - 04/19/16 10:24 AM Re: Changing to different lot number [Re: RiverRider]
ChadTRG42 Offline
THF Celebrity

Registered: 09/16/09
Posts: 10620
Loc: Lewisville, TX
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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