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New powder lot…..
#8737566
11/18/22 10:29 PM
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Joined: Sep 2008
Posts: 3,779
P_102
OP
Extreme Tracker
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OP
Extreme Tracker
Joined: Sep 2008
Posts: 3,779 |
Knowing powder lots can be different, when starting with a new lot do you:
A) Load a few to see if any difference first. *B) Load a few of several different powder weights. C) Start all over with a ladder test.
* since any variance is probably small, do you use .1 gr. Increments?
Do not trifle in the affairs of dragons, for thou art crunchy and taste good with ketchup.
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Re: New powder lot…..
[Re: P_102]
#8737617
11/18/22 11:31 PM
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Joined: Jan 2009
Posts: 19,298
Judd
#1 Creedmoor Fan
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#1 Creedmoor Fan
Joined: Jan 2009
Posts: 19,298 |
start with A...go to B (I try to chase the velocity)...sometimes that doesn't work and then I go to C or sell the gun
Don't let your ears hear what your eyes didn't see, and don't let your mouth say what your heart doesn't feel
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Re: New powder lot…..
[Re: P_102]
#8737729
11/19/22 01:22 AM
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Joined: Dec 2008
Posts: 41,222
J.G.
THF Celebrity
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B
Load your current charge for groups.
And load .2 gr less, .4 gr less for groups.
And load .2 gr more, .4 gr more for groups.
Somewhere in there is probably your old load. Different powder charge, or same powder charge, same consistent shooting, probably at the same speed.
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Re: New powder lot…..
[Re: P_102]
#8738208
11/19/22 06:48 PM
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Joined: Nov 2007
Posts: 604
ASIC777
Tracker
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Tracker
Joined: Nov 2007
Posts: 604 |
On medium size cases +/- .2 grain has always worked for me. On a 7mm Weatherby Mag I had to go +/- .4 to find the load. That was with H4831 SC.
Lifetime NRA Member
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Re: New powder lot…..
[Re: P_102]
#8738320
11/19/22 11:03 PM
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Joined: Jun 2011
Posts: 34,071
Buzzsaw
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Re: New powder lot…..
[Re: P_102]
#8738340
11/19/22 11:25 PM
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Joined: Sep 2008
Posts: 3,779
P_102
OP
Extreme Tracker
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OP
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Posts: 3,779 |
Oh hush, Buzz. You just sold a gorgeous, great shooting rifle (with factory loads) that you never even went to the trouble to load for and find out just how good it could be. Imagine if you loaded for it and it shot itty-bitty groups (1/2 the size of the factory ammo)…..you could sell it along with 200 of those loads and maybe not lose that $1300+.
Do not trifle in the affairs of dragons, for thou art crunchy and taste good with ketchup.
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Re: New powder lot…..
[Re: P_102]
#8738358
11/19/22 11:49 PM
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Joined: Aug 2011
Posts: 6,183
Tactical Cowboy
THF Trophy Hunter
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Posts: 6,183 |
The secret to a long life is to try not to shorten it.
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Re: New powder lot…..
[Re: P_102]
#8738505
11/20/22 03:26 AM
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Joined: Dec 2008
Posts: 41,222
J.G.
THF Celebrity
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Joined: Dec 2008
Posts: 41,222 |
Oh hush, Buzz. You just sold a gorgeous, great shooting rifle (with factory loads) that you never even went to the trouble to load for and find out just how good it could be. Imagine if you loaded for it and it shot itty-bitty groups (1/2 the size of the factory ammo)…..you could sell it along with 200 of those loads and maybe not lose that $1300+. Preach!
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Re: New powder lot…..
[Re: P_102]
#8739685
11/21/22 11:45 PM
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Joined: Jun 2011
Posts: 34,071
Buzzsaw
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Re: New powder lot…..
[Re: J.G.]
#8740288
11/22/22 10:08 PM
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Joined: May 2017
Posts: 5,220
Smokey Bear
THF Trophy Hunter
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THF Trophy Hunter
Joined: May 2017
Posts: 5,220 |
B
Load your current charge for groups.
And load .2 gr less, .4 gr less for groups.
And load .2 gr more, .4 gr more for groups.
Somewhere in there is probably your old load. Different powder charge, or same powder charge, same consistent shooting, probably at the same speed. This^^^ What I do is a little different but close to the same. I load one of each from a half grain under to a half grain over in.1 increments and shoot them through the chronograph. When I find the charge(s) that produces the same velocity I test that load for groups and consistency. That usually works for me. If I have to fall back to C I will but it seldom happens.
Smokey Bear---Lone Star State.
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Re: New powder lot…..
[Re: P_102]
#8740318
11/22/22 11:02 PM
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Joined: Oct 2009
Posts: 12,235
wp75169
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I’ve had Varget that was significantly different.
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Re: New powder lot…..
[Re: P_102]
#8740802
11/23/22 04:00 PM
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Joined: Jun 2011
Posts: 34,071
Buzzsaw
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just loadem up. no need to reduce charge on Varget lots
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Re: New powder lot…..
[Re: Buzzsaw]
#8740938
11/23/22 06:18 PM
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Joined: Dec 2008
Posts: 41,222
J.G.
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just loadem up. no need to reduce charge on Varget lots Wrong.
800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: New powder lot…..
[Re: J.G.]
#8741002
11/23/22 07:44 PM
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Joined: Oct 2009
Posts: 12,235
wp75169
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just loadem up. no need to reduce charge on Varget lots Wrong. Yeah I wasn’t even going to respond to that.
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Re: New powder lot…..
[Re: P_102]
#8741017
11/23/22 08:01 PM
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Joined: Jun 2011
Posts: 34,071
Buzzsaw
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