03-27-2019, 12:02 PM
shootdr1 Wrote:I an newer to the Grend. game so I am sure this is a silly question, but are the broken bolts a thing of the past? I thought they were then I spoke to a smith who I respect and he said he actually still gets a lot of people in with broken bolts. Now, I am not sure on specifics etc.. but I thought that issue was resolved years ago. I have a Satern barrel with the bolt they provided and I do not push hot loads at all. I am debating another Grend. build but I wanted to be sure. Thanks and I am sure this has been addressed a lot! But I cannot find anything new on it.
SR1:
I haven't seen a post about broken bolt lugs on the forum for about a year but I am sure they still happen. A lot of places are making Grendel bolts these days and some have bad lots of them or just don't know how to make them so a guy ends up with ones that shear lugs. There is more to it than just the bolt manufacturing process so if you want to learn more about it you can run a search on 'sheared' or 'broken' bolt lugs. LRRP52 is the guy who you ought to look at because he has spelled out the reasons for sheared lugs a couple of times over the years.
If your bolt was made well and you keep the loads within the bounds of published data, your bolt will last a long time. I do not think they last as long as a decent mil spec 5.56 bolt but some guys here have gone over 10K rounds without shearing a lug and that, to me, is remarkable. I have sheared lugs on six bolts over the years but the bolts were made before the newer metallurgy and technology that is used today.
My advice remains for Grendel owners to have a spare bolt handy.
LR55