Hey all! I'm looking to start my 3rd M700 build. I would like something in the 6mm or 6.5mm category for groundhogs/long range PD's/ deer/and maybe antelope if I ever get a chance. My biggest goal for this is to have a VERY flat trajectory. Some of the calibers I was looking at was the 243AI, 6mm Rem or AI, 6-284, or 6.5-284. I already have a 6.5x47 Lapua in the making. I know that the 6-284 has a significantly shorter barrel life, but that doesn't really scare me away. Any input you have on this I would greatly appreciate!! Thanks!