REMINGTON 700 GAS OFF CURE
(first printed in Varmint Hunter
Magazine July 1992)
By James Calhoon
If anyone has ever had a primer leak in a 700 Remington (or XP-100
for that matter) you realize that you've gotten a face full of
combustion gases. Your sighting eye will particularly get it.
For this gas off situation, I have borrowed a cure from Ruger,
which he probably borrowed from Paul Mauser himself. I drilled
two 3/16" holes in the bolt, (see figure 1) which exit into
the magazine in firing position. In no way is the performance
of your rifle impaired, but safety is greatly enhanced. If done
with care, the gas vents appear to be factory installed.
After this modification is performed, escaping combustion gases
from ruptured primers are vented harmlessly into the magazine.
This minor change can certainly make a shoot more enjoyable and
1. Mount bolt, with firing pin assembly removed, in drill
press vice. NOTE: A press should be used to attain quality results.
2. Scribe locations of holes to be drilled in bolt.
3. Center punch the scribed locations.
4. Use a center drill with a 3/16" point. Drill through and
countersink just enough to create a slight chamfer. NOTE: Use
lubricant. If you do not have a center drill, use a regular 3/16"
bit and follow with a file or similar tool to break sharp edges
5. Use a 3/8" diameter round file to remove any burrs on
the inside of the bolt.
6. Wash bolt thoroughly in solvent and blow dry with air.
7. Reassemble and relubricate the bolt.