rebore

Original caliber was .54, but many were rebored to .58 so they could fire the standard U.S.

Ordinarily, most modern firearms feature precisely machined crowns that rarely ever give trouble, but the Ruger barrel had just been rebored and the bullets were now emerging from a flat crown that showed the usual ground/polished crown of the times.

More than a hundred of them were rebored and turned into lethal weapons.

The new unit can save great deal of expense from costly down time as any worn bores or articulated joints can be rebored and welded in the same operation, keeping downtime to a minimum.

The tolerances allow remounted jaws to run concentric with the spindle axis within 0.001[inch] tir, which mostly eliminates the need to rebored.

I doubt that lefty Craig Boddington has all his safari rifles rebored for a left-hand twist, so I guess I will go with Occam's razor on this one.

One of the guys in my shop didn't like having 300-grain .44 Mag bullets going through the target (or deer) sideways, thanks to a very slow rifling twist rate in a Marlin lever gun, so he found a .30-30 barrel and had it rebored with a faster twist to stabilize these projectiles.

In this case, finished coupling halves are taken from stock and rebored to size that fits the order.

The smaller caliber cylinders could be rebored to .44 Special easily.