Shot the GP100 327 in IDPA this morning and still loving it! Ammo? Plenty of it in local gun shops, not a 22lr, 38sp, 357, 9mm, 45apc to be found! I reload for my (5) 327 Mag revolvers, but also buy factory ammo for cary. My favorite load is 100gr cast over H110 and a SPmag primer, peppy load...