Brownells has 400 grain A-frames in stock. I have 100 on the way for my Rigby. I also found 300 grainers for my 375 H&H and 450 grain 458 in stock on swifts site. All my big bores seem to shoot the A-Frames very well.
375H&H I’m using 75 grains of RL 17 cci 250 3.570 2610 FPS 416 Rigby is shooting 350 TSX with 104 grains H4831 FED 215 3.750 not sure on speed but it’s shooting three touching at 60 yards. 458 Winchester 450 shoots under MOA using AA2231 at 77.7 grains 2320 FPS 3.310 OAL.
