04-01-2012, 10:58 PM
terry80452 Wrote:6.5 Sporter is sold by Model 1 sales. It uses a 7.62X39 bolt, with the chamber cut a bit deeper to compensate. the main difference between the two bolts is that the true Grendel bolt face is .011" deeper (.135") than the 7.62 bolt face (.124") I have a 6.5 Sporter, and the depth on the bolt face is, indeed, .124". In other words, it's designed to shoot the grendel cartridge, but goes about it in a slightly different way. Probably in an effort to avoid trademark issues..... In other words, with this rifle, if I need a new bolt (or want to upgrade) I get a 7.62 bolt, a true Grendel bolt would not headspace correctly.
There is a potential danger here, I personally haven't measured my Grendel bolt but if Terry is correct and I believe he is because of other posts concerning the bolt face dimensions, if and when someone replaces his 7.62x39 bolt with a Grendel bolt that's .011 of excess headspace. Bad things can happen. Be careful and be sure you know what you have when it comes to replacing bolts.