Barrel torque for MPA 300-WMBA ...

[rustyinbend]

Anybody know the torque specification for the barrel-to-action threads on a Remington-700 action to a Spencer-MPA barrel on this setup? I've seen "90" ft/lbs at the high end, and "50" ft/lbs at the low end, but I can't find the actual specification. I suppose I could call MPA, but I'm lazy and asking here seems easier. I took the barrel off and am soaking it in Carbon Remover to see if I can breath more life into this barrel before swapping it out. Just need the spec to reassemble after mega-cleaning.

 

[spife7980]

There is no magic number, 50-100 is a fine range.

Or just good and tight if you have a finely tuned elbow.

 

[rustyinbend]

The MPA DIY barrel change YouTube says "90" ... but other sources say that's more for machine-based factory tightened barrels, and that "60" is better for normal use. I'm leaning towards splitting that evenly and tightening to about 75 ft/lbs ... with some anti-seize on the threads (like everyone recommends). If I don't get anything more authoritative, I'll probably go with 75.