Double, triple check reloading tonight

Loaded up some .223 with a new powder- win 748, small federal primers. 25.2 grains. 2.255 OAL. Weighed them afterwards- only the case to case variation between brands; within brand groups only .2 grain variations. Into my second 100 round box of .223. Also loaded up some 7.62x54R. Hornady FMJ/BT .310 bullets 174 grain over 41 grains of win 748. Loaded 5 to recommended OAL, 5 +.030 to see if that helps or hurts group size. In the S&B brass- no clue if they will last or not.