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  #1  
Old 04-20-2021, 04:44 PM
GrampawEd GrampawEd is online now
 
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Default Seating depth?

Loading 150 grain bullets for a 308 bolt rifle. For those who have done so, seating how far from the lands has led to the best accuracy? Thanks.
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  #2  
Old 04-20-2021, 04:48 PM
JimF JimF is offline
 
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Most often, .010” off lands. (Not always, but most often.)
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  #3  
Old 04-20-2021, 04:55 PM
ceresco ceresco is online now
 
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Overall, chasing accuracy by varying seating depth in not worth it. With an individual, very accurate rifle and quality bullet, it may be worth it. For CMP games type shooting, just seat to fit the magazine and enough bullet inside the neck to equal approximately one bullet diameter. Good Shooting. ..
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Old 04-20-2021, 05:41 PM
rcolarco rcolarco is offline
 
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Load .308 to 2.8, or less for bullets lighter than 150. This gives MOA, if you are capable of shooting such. Life is too short to worry about COAL.
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  #5  
Old 04-20-2021, 07:23 PM
hebes405 hebes405 is offline
 
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I usually start at .020 off and work my way in .003 at a time.
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  #6  
Old 04-22-2021, 04:29 PM
Pinecone Pinecone is offline
 
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Quote:
Originally Posted by ceresco View Post
Overall, chasing accuracy by varying seating depth in not worth it. With an individual, very accurate rifle and quality bullet, it may be worth it. For CMP games type shooting, just seat to fit the magazine and enough bullet inside the neck to equal approximately one bullet diameter. Good Shooting. ..
OP -
Quote:
for a 308 bolt rifle
Not a Garand.


In my .308 bolt rifle, changing COAL produced significant increase in accuracy. Shrunk groups by about 1/2.
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  #7  
Old 04-22-2021, 06:38 PM
ceresco ceresco is online now
 
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I never mentioned Garands....and I can't see group size cut 50% with seating depth except in the rarest of cases. Good Shooting. ...
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  #8  
Old 04-22-2021, 07:02 PM
hebes405 hebes405 is offline
 
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Quote:
Originally Posted by Pinecone View Post
OP -

Not a Garand.


In my .308 bolt rifle, changing COAL produced significant increase in accuracy. Shrunk groups by about 1/2.
You're absolutely right pinecone. Seating depth can turn a MOA load into nice tight knot. Especially with depth sensitivity vld bullets.

OP. Check out accurateshooter.com for more precision reloading information. Not that that there isnt good advice on here, but every thing is about precision over there.
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  #9  
Old 04-22-2021, 10:17 PM
la Fiere la Fiere is offline
 
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Quote:
Originally Posted by hebes405 View Post
I usually start at .020 off and work my way in .003 at a time.
Me too. And although I know better than to argue with Ceresco, in a bolt gun it will make a difference.
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  #10  
Old 04-23-2021, 08:52 AM
ceresco ceresco is online now
 
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So......makes a difference in a bolt gun but not a semi?? The bullet must know what kind of action is behind it--I guess..... GoodShooting. ...
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