That picture tells a lot, Brad. People who don't think smokeless powder at low pressure will bump a nose need to study on those pictures a bit.
A little harder bullets, probably not a lot harder, ought to get that a little bit more under control and improve accuracy, but you still want the bullet to bump to fit. Judging by the two front grooves, the front band might be wadding up a little going into the throat. I also notice a little bit of gas erosion on the base at the land engraves, which is to be expected. A soft, plain-based alloy with 1/4" of the base poking down into the powder space, fired from an autoloading rifle, ought not shoot worth a darn, and it wouldn't at higher velocity, but it just continues to amaze me what this little cartridge can do. I re-checked some bullets from the big batch I'm shooting now and they are stable at 12.5 BHN and shoot great.
NO leading? I seem to always get a little bit at the very back of the bolt bore in the carrier, and a little bit stuck to the bolt tail, but never any in the bore, chamber, or throat and only a teensy tiny bit on the baffles of my muzzle brake. I need to pull my frankenrifle down again and check how it's doing, IIRC it's been about 400 rounds since I even touched it other than one or two times I squirted some oil in the bolt carrier vents. It ran like a Swiss watch all weekend with zero maintenance, about 60-70 rounds fired a few here and there at a time.