04-12-2018, 01:57 PM
Yes, just ask Dave about semi auto spec and bolt gun spec. Semi auto has to be at the top of SAAMI spec ( loose) to be loaded and extracted over and over again at a fast rate. Bolt gun spec is loaded with you cramming the round in by hand and its going to be tight. To tight for semi auto. So its going to be at bottom of SAAMI spec. Now there are some companies that take it upon themselves to do different run outs, throats, or lead. Thats from the neck of the case out to the groves and landings. That's where it gets Fu$%# up. Some companies give you no room, some give you a lot. That's where this device comes into play.

