зношений канал ствола
erosion of bore (in the bore)
wearing qualities
wearing surface
wearing test machine
wearing-proof alloy
wearing course
wearing-out battle
wearing-out strategy
mandatory wearing date
axis of the bore
barrel bore wear level
bore
bore brush (swab)
bore cleaner
bore diameter
centerline of the bore
extended range full bore (ERFB)
helix along the axis of the bore
muzzle bore sight
rifle bore cleaner
smallbore (small-bore)
smooth-bore (smoothbore)
smooth-bore artillery
bore guide
big bore
bore corner
bore gauge
bore leading
bore obstruction
bore premature
bore sight
bore sighter