How many times have you
picked up an old Parker shotgun and looked at distorted or
mangled screws after someone tried to dismantle the gun?
Anyone who has looked at even a few Parkers has seen them, it
may be the biggest problem of all for Parkers.
The very first thing to do is to clean the slot of any
debris, rust, dried hard oil or whatever else might be in there.
Toothpicks are a good start but if you need something more
aggressive, a dental pick can be used.
If a screw head was "buggered", it may be possible
to repair it rather than replace it. Don't file off the
burrs but rather just peen it
back into place. Filing removes the metal but a
"buggered" screw head has all its metal intact, its
just not where it should be. With a little care, the metal
can be persuaded back into its proper position.
First off, be patient. Use various sized brass
punches and a very small hammer. Use very light
tapping during this process. When the screw head is messed
up, a screwdriver blade slipped under some pressure and twisted
the metal edge of the slot out and up. To repair, return
the metal in the opposite fashion, so start at the farthest
point from the big ugly lump and faness the metal back into its
proper place. Do this with the screw in place, or if it is
already out, place it in a soft jawed vice. Use a small
brass punch first and begin pushing the metal back toward the
slot. BE PATIENT! Progress to larger punches,
just larger enough to fully catch the marred edge. With
patience and perseverance the screw head can be "unbuggered".
If using steel punches rather than brass, keep the tapping
very light. The bit of metal you are trying to move back
into place is compromised, so the softer the punch used the
The "new" edge of the screw slot will not be as
strong as an unmarred screw but the slot will look pretty decent
and if proper hollow ground tips are used, the screw can still
turn without marring it.