6.5x47 Lapua trim length

[seajay]

My once fired cases measure 1.831". If 47mm is max case length, is 1.840"- .010 under max, the correct trim length? 47mm x .03937" =1.850" - .010 = 1.840"

 

[DJ111]

Depends on what the reamer spec was that cut the chamber but I think you are safe at 1.840.

The reamer print I have is longer than that by .020'', but that is my print and yours may very....

Dallas

 

[DennisH]

1.843 case trim length 6.5x47 Lapua, or just pick the shortest case out of your last batch shot (second loading) and use this number as base to trim!

 

[JabaliHunter]

As above, it depends on your chamber but also getting all the cases to the same length. One of these might be useful too http://www.sinclairintl.com/.aspx/pid=32925/Product/Sinclair_Chamber_Length_Gage

 

[270guy]

Agree with DennisH, 1.843 trim length (from Lapua website). But guess it depends on how your chamber is cut.
cheers

 

[DennisH]

but also getting all the cases to the same length

The above is the most important part!

I never realized how a few thousandths made a hugh pressure difference when shooting! I have probably lost a match or two over a few thousandths!