Not sure how far you'd like to take it. There is a wildcat(s) that would work great with your bolt and barrel twist. It's based on the .30 Remington which uses the same rim diameter as the 6.8 SPC and other cartridges like the .224 Wby. Mag, .25 Rem, .32 Rem.... a wildcat that I made off it was the .22 GTOA friend has a rem 700 in 6.8 spc. We were wondering what, if any, calibers this rifle could be rechambered to. Any info will be appreciated, thanks.