To even the lug
contact, clean off the layout dye and coat the rear of the lugs
with 120 grit lapping compound.
rotate in and out of place when we lift or close the bolt handle.
A simple visual examination for locking lug
surfaces may reveal inherent problems in this area.
Drilling and tapping holes in bolt action rifles should be done only after careful measurement to identify no-drill areas such as locking lug
seats, and in the case of M98 Mausers, the inner shoulder used to headspace the barrel.
So protect the path and the lugs
. When you make the connections, take your time.
A tipoff to this is that the front of the locking lugs
will be rounded by this action.
During the lapping process, you're not trying to remove an appreciable amount of metal from the lugs
or the receiver's mating surfaces; in fact, you want to stop as soon as uniform contact is made between locking lugs
Lapping the bolt lug
surfaces is a very simple operation.