I am hopefully picking up a 1950 M-S in .270 Winchester that is not a collector grade rifle. It has a pad added and a swivel stud in place of the stirrup sling mount. I am wanting to have JES Reboring rechamber and rebore it to 9.3x62mm. Will the rotor work with this round? I had him rebore a Brno small ring 8x57mm to the 9.3x62mm but unfortunately had to sell it. I think this would be a nice all around gun.