UPDATE: I picked up 200 rounds of Sellier & Bellot 180 ammo. Shot all of it with only 5 failures at returning to battery. Only 1 out of the 5 jams happened with the factory magazines, the other using Cobra ones. Using the factory mag it happened on the last bullet to be fired. For the Cobra mags one jammed on the first bullet to be fired, it did appear to show markings on the bullet after inspection. The others happened on the last and second to last in mag to be fired without any signs of knicks or scratches. The factory OAL was 1.25. Yes, it appears to be my reloads, I suppose, but still there was 5 mishaps. Granted it has only successfully now had 250 rounds repeatedly shot with factory, other 100 or so with reloads. All that being said my reloads measure 1.265, but the thing that erks me is that depending on bullet/grain weight the Western Powders data OAL ranges from 1.245 to 1.26.