I have a 6.5/284 in a Tubb 2000 rifle. It shoots great, but I wish the action was longer, so I could seat out the 140gr sierras longer that OAL 2.825. It is magazine fed, so that is about the longest it can reliably feed. When I shoot out the barrel I might buy a 260 so I can use the magazine fully. The barrels about 25 inches I think, so I dont think I will lose too much velocity. Actually I hoped somebody would make an action to use the Browning Bar magazine because, it is alot cheaper than M-14 mags, and it takes a long action cartridge, like 30-06. I wonder if Prairie Gun Works can do it?