Alex at Wheeler Precision rebarreled a 300 RUM for this summer and throated it for 245 Breger's. I had found a 8.5 twist barrel on Bartlein's web site and had it sent to Alex. I tried some solid copper bullets before the Berger's but could not get them to group. This was the first 9 shots using Bergers with H50 BMH, CCI 250's and ADG brass, all at 90grs. Could not be happier.