yes, just use the 300 win mag/ 375 ruger mag. might have to open the front of the feed lips to nose up the bullet slightly to enter the chamber easily.it's a 30-06 dbm center feed, just thinking if I could swap bolt heads, mag and barrels and screw on a long 300wsm barrel it could be shinanigans going between the 16" '06 and a 26" wsm running heavies
i shoot a 30-6.8 western which is a shortened wsm on a small shank long action at 3.1" without any issues.