Jackie sleeves the rear of the bolt. Instead of sleeving, I install two inserts at the rear of the bolt body to produce "bumps" which eliminate clearance when the bolt is locked up. I prefer this as the bumps have no effect of fore and aft travel of the bolt; only coming into play when the bolt is turned down. I dovetail the inserts into the bolt body.
Your bolt face can be bushed to correct the firing pin hole. If bushing the bolt face, one can reduce the firing pin diameter to 1/16. The smaller diameter pin eliminates primer blanking but the larger diameter pin is more tolerant of an off-center strike. Blanking is more of a problem with small rifle primers. GD
