I shot my 1946 era K31 today. The walnut has the typical cleat marks, but mechanically the gun is very good. Ammo was Privi 174gr FMJBT. I shot off the bench, sandbagged at 100yrds. My fouling shot was off the bull, I lowered my POA slightly and put five more into just under 2" on the sticker. Happy camper. The ammo is a little dirty, but decent shooting. While I was at it, I shot my 9mm Sterling too, but at 50yrds. Ammo was Win 9mm 124gr Nato spec FMJ. I shot off sandbags, which struck me as weird with a SMG. I trimmed down the front sight a little, still need to skootch it over left a little. 'X' marks the POA I had to use at 50yrds. I shot 15 rounds. ...soo, I guess I will trim down the front sight a bit more.