I've maxed out my 260 at a little over 1200 yards so I'm looking to upsize to get out to a mile. The wife gave the go ahead for a HS Precision 338 Lapua Mag but I'm having a hard time buying one. The initial cost isn't so bad but all the reloading equipment and cost of shooting is very high. I'm considering alternatives before I plunk down a bunch of money. The factors I'm considering are supersonic to a mile, quality brass readily available, relative cost per round, reasonable barrel life, and at least a 7mm bore. Currently on my short list is 7 SAUM, 300 WSM, and 300 Win mag. Won't be shooting at that range more than once a month but at least 4 times a year. Anybody been through the same quandary? Thoughts or opinions? Thanks