Have an original and a custom built on a pre 64 action. Both operate without issue and the have gauged the original chamber, well within specs. I have had issues with some Winchester 358 brass being short and causing miss fires. However, necking up 308 brass has resulting in no issues at all. Have been using this cartridge for 20 plus years and have had several other rifles so chambered without issue.
The pre64 action is of one length, magazine parts are sized for the cartridge family used.
Last edited by nathanial; 11/29/15.
