308 brass length

[big mike 2121]

I have some 308 brass that measures in the 2.02 range. can i use this brass or does it need to be trimmed?

 

[Gunpoor]

I would probably trim them, not knowing how generous the chamber of the rifle is. Impingement of the bullet raises pressure immediately and potentially dangerously.

 

[jimbires]

book specs are 2.015 max , trim to 2.005 if you don't know your chamber length , you better use the book specs to be safe .

 

[g0rd0]

personally I use the Lee system and always after sizing put the brass through the trim just to be sure that all are the same length

 

[backwoods83]

The books list a min and max length, but it is best to keep them at the mean length, this way they aren't short enough to cause a carbon build up in the chamber neck but they aren't long enough to pinch in the chamber. 2.005 min plus 2.015max= 2.010 mean length. That is what I keep my 308 brass trimmed at as well.