jetinteriorguy
New member
I’ve been working up a load for my AR in 7.62x39 and have hopefully found a nice 1.25-1.5 MOA load using H335. I loaded up 20 rounds to test my potential load and have been putting a light crimp on them. Just for S&G’s I also loaded up 20 rounds with no crimp. I’m not worried about trying to make this rifle a 1/2 MOA shooter so haven’t bothered checking concentricity. Just messing around this morning thought I’d check concentricity and was pleasantly surprised. Of the crimped rounds all but two of them were less than .001” off and the other two were just slightly over .001”. Considering these aren’t some high quality match Bullet and they were seated with just a regular Lee seating die and crimped with a Lee collet die I was pretty impressed. Then I checked the 20 rounds that I didn’t crimp and found the more typical runout of .002-.004” runout I typically get from a Lee seating die, which is still more than acceptable in this instance considering my expectations for this ammo. I haven’t had a chance to test these yet to see if there’s any difference on paper. Wondering if anyone else has ever noticed this. Of course I do realize this is a pretty small sampling and not a particularly scientific test, but just has me curious.