Home Forums Hunting & Shooting Ask The Gunwriters Ruger M77 1974 6mm twist

I have been reading on the “web” what the twist rate of these particular production rifles twist would be? If anyone can steer me in the right direction for a definite answer would be or an expert in these rifles I would greatly appreciate it! Thanks Otis

Could be 9, could be 10.

https://www.gscustomusa.com/twistratebymanufacturer.html

Not hard to measure it yourself.

"Not hard to measure it yourself."

This^^^

Take a cleaning rod and a 7mm bore-brush. Wrap the brush in a cleaning patch or two, enough to require a little effort to push the brush down the bore a little ways. Mark the cleaning rod by putting a wrap of masking tape just in front of the rod's handle, and mark it with a "reference point" with a ball-point pen.

Measure the distance from the mark to the recoil pad/buttplate, then push the rod into the bore until the rod twists until the reference point is in the same postion. Measure the distance the rod has traveled, and that's the rifling twist.

Repeat if you're not sure about the first measurement.

1 in 10

^^^^^^^^^^^^^THIS^^^^^^^^^^^^^

Lot of 243's were 1 in 10 and shoot well. Never hear any one complaining of their accuracy. The early 77 in 6mm I had was not consistant and I don't think that had anything to do with it's twist rate. More like it just being a crap barrel..mb