Southtexas, no I havnt tried the 63 grain Sierras. I was trying to find a deer load for the .223. I tried factory loaded 62 grn Fusions and 63 grn Bitterroot Vally loads. They wouldn't group at all. The Federal 60 grn partions shot about 1.5" and that good enough for deer. This rifle shoots any 55 grn soft point load very well so Im thinking its the twists. I do handload but I don't like handloading such a small round that's so easy to buy. Is that 63 grain sierra a boattail? If its a Gameking it may be good in my Bushmaster.
