Smokinyotes
Member
Just recently built a 7LRM and was wondering what the max & min trim lengths are on this cartridge.
7 LRM case trim length
- Thread starter Smokinyotes
- Start date
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Mikecr
Well-Known Member
You should measure your chamber end length and set trim -5 to -10thou under this.
This is the tool used to do so: Sinclair Chamber Length Gage | Sinclair Intl
Basically, you trim a neck short, seat this gage in the neck and chamber the round. The gage will hit chamber end and push back into the neck. Extract the round and measure your touching trim length. Subtract from that for desired clearance.
This is the tool used to do so: Sinclair Chamber Length Gage | Sinclair Intl
Basically, you trim a neck short, seat this gage in the neck and chamber the round. The gage will hit chamber end and push back into the neck. Extract the round and measure your touching trim length. Subtract from that for desired clearance.
