Full length resizing

[DaveA37]

OK, most of us agree that full length re-sizing is needed when using brass from other than the rifle the spent brass had been fired in. I trim to length all such cases but got to wondering what the "min-max" tolerance is when doing the triming. For example: The book calls for a case length of say 2.054 (doesn't specify any +/-, just the 2.054 case length) I try to hit between .003-.005 in the long direction.

So how much is too long or too short? :?

 

[Antelope_Sniper]

I've been known to go "alot" shorter. That way I don't have to trim as often.

 

[barge]

Most out of the box rifles are probably chambered on the long side. I would never assume this and there are tools to measure it. Sinclair offers chamber length gauges to measure this. You do have to sacrifice a piece of once fired brass( fired in the chamber to be measured) then the neck shortened so the gauge can be used. The cost is 6.95 per guage per cal., they only offer one for a tight necked (6mm rifle).

 

[rick smith]

Published OAL in most manuals is the max length. Normally shorten by 10 thousants for min. length. Use what Barge said if you want to know the length of your chamber. Every factory chamber I have measured has been on the long side.Rick.

 

[Richracer1]

I trim my brass .020 shorter than what's stated in the Nosler manual for that caliber. I do this due to using the RCBS "X" sizing die, which is directed per their instructions. Also, I always full length size my brass regardless of it being new or fired from that specific rifle.

 

[nodak7mm]

What Rick said..... 8)