That's what I'll probley buy. I had good luck with my lapua 6.5-284 brass I just heard somewhere that if you use lapua 260 brass let your gunsmith know that your using lapua.
Since you have a long action I would go 6.5-284 or 6.5-06 if you want a 6.5 cal or just keep your 280 or convert to 280AI. All will take any animal in North America.
I agree with Lance. Buy once cry once. save your money and get what you want. I have had multiple rifles built by the some of the best smiths over the years wanting the latest and greatest but as I got older and wiser I finally settled on my perfect rifle for my hunting and shooting needs. PM if...