I loaded the same at 2.26 and run great. I'm testing shorter OAL tomorrow see how they shoot.
Thing is your 55s run just fine. Check all the measurements of those against your 62s. Has to be some difference. Also check to see if anyone else has ran into headaches with that rifle. There are 223 barrels out there that don't play nice, run really tight so run into issues.
Turns out it was high primers. Loaded 50 without powder and primers today, fed them manually they eject perfect. Thinking I'd solved the problem along the way of replacing my die due to a stuck case and waiting for more components, I pulled the bullets (total pain), primed and powdered and repeated. 15 or so of them were difficult to eject. After scratching my head for 30 minutes or so, I noticed a minor abrasion on the primers of the rounds that were difficult to eject. Checked the difference in length and found they were .002-.003 longer. Turns out the primers weren't completely seated. Not enough to really feel the difference and the case gauge didn't catch it. Re-seated the primers and they fed perfectly. I guess the bolt and extractor in the AR is much tighter than the Mini-14. Now I'm going back through 700 plus rounds re-checking the primer depth.
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