I did not do the extensive testing you probably did so my indicators offered as jams at different figures of rounds from the mag. The mags I have had to repair are not the 308 mags, but they are precisely the same basic layout given that the 1 308 mag https://landendbqcp.p2blogs.com/14692618/what-does-ruger-american-rifle-6-5-creedmoor-mean