While converting from 7mm Magnum to 7mm-08, ran across problems with bolt. First i knew the bolt head needed changing. When standard bolthead came in, firing pin had to be changed to small diameter. Bought that. Then when TRYING to assemble bolt, bolthead would not seat into bolt body. Firing pin assembly was not the problem, checked length. Found a dimple on the exterior of the bolt body, and no recess milled into the bolthead where the dimple is at. My question is this, what is the dimple for, does it need to be there. Should i dremel it out of the bolt body or have the bolt head milled for the recess. Either way would allow the bolthead to seat into the bolt body.