vtjonny5

Thanks for the reply, I'll put a specific parts list together and get it on here (I'll have to ask the builder, I'm not 100% sure). My comment about being unable to pull the charging handle back was with live rounds, not spent cases. If you put a loaded mag in, cycled the charging handle (to put a live round in the chamber), then dumped the magazine (without firing a shot), it was extremely difficult to get the LIVE round out of the gun. Not sure what that was caused buy, but I know it wasn't chamber pressure because the gun wasn't fired. When they put the new barrel on, that problem went away, but still cratered primers.

Welcome from Vermont. Awesome camo pattern! You must be itching to blast that thing? Good luck with it.

Welcome from VT! I just joined this sight literally 20 minutes ago myself, also new to the AR10. My dad was a Vietnam Veteran. He drove a tank (was a tank Commander). Lost him to ALS in 2016. Thank you for your service. I'm also a fan of the 1911, but I only have 3, 2 Colts and a Kimber.

Hello from Vermont! I am an online forum virgin, so please be gentle. My AR knowledge is pretty basic, but my overall firearms knowledge is definitely above average (average person, not average gun enthusiast). I purchased my first AR a few years ago, (now i have 7, dont tell my wife) and had an AR 10 built for me by a local custom shop a few months ago. This shop machines their own lowers (or has someone machine them). My gun has a match grade stainless fluted barrel. When I first got the gun, I had difficulty extracting live rounds out of it. It was all but impossible to pull the charging handle back. I brought the gun back and they put on a new barrel (my first barrel was blued). This seems to have fixed that issue. Every round I've fired through it (from both barrels, the new one and the old one), the primers on the empty cases are cratered...............badly. So badly, in fact, that when you stand one on it's end (on a table, for instance) it tips noticeably to one side. I've tried a number of different factory rounds in this gun, all had cratered primers (Hornady Superformance, Federal Fusion, Fort Scott, Remington Core-lokt, and Winchester Deer Season XP). My reloading experience is telling me there is a pressure issue, but nearly all of my gun experience is with bolt actions, not semi-automatic, and certainly not AR's. So, im not 100% confident in that assumption. I want to eventually reload for this gun. I did measure a fire formed case with a hornady lock-n-load headspace gauge. The Fort Scott ammo measured .010 shorter than my fire formed brass. The Hornady was .008 shorter , and the Federal was .005 shorter (and also grouped the best). I didnt get to measure the Remington or Winchester, that was ammo a friend let me try when we were at the range. Just shot one of each to see if it cratered (it did). Any advice on which direction to go from here would be great. Thanks.