7.62X25, 327 Fed., 25-35, 250-3000, 257 Roberts, 260 or 6.5X55, 7X57, 7-30 Waters, (got mine), 8X57, 35 Rem, 338 Marlin Exp or 338 Fed or 338-06. Make the chambers tighter, the bores the right size for available bullets, Octagon barrel would be fantastic and getting to the point that you can just order a barrel with out sending the frame in to be fitted would be the best present of all, Santa! DP