The Firing Line Forums - View Single Post - Need help finding rifle twist for a Rem 788 22-250

Sport45 · March 8, 2013, 11:45 PM

Good advice above.

I use a jag and patch which can be reversed in the barrel. Make your 12 o'clock mark on the handle end of the rod. Get it started in the rifling and make a mark at the end of the receiver (or muzzle if you go from that end). Mark it again when the mark on the end of the rod has made one complete revolution. Remove the rod and measure between the marks.

I do it this way because the index mark is always visible and hasn't (usually) passed my reference point on the rifle.

On some you have to measure a half a revolution and multiply by two... My 1 in 38 Marlin comes to mind.

March 8, 2013, 11:45 PM	#3
Sport45 Senior Member Join Date: May 25, 1999 Location: Too close to Houston Posts: 4,196	Good advice above. I use a jag and patch which can be reversed in the barrel. Make your 12 o'clock mark on the handle end of the rod. Get it started in the rifling and make a mark at the end of the receiver (or muzzle if you go from that end). Mark it again when the mark on the end of the rod has made one complete revolution. Remove the rod and measure between the marks. I do it this way because the index mark is always visible and hasn't (usually) passed my reference point on the rifle. On some you have to measure a half a revolution and multiply by two... My 1 in 38 Marlin comes to mind. __________________ Proud member of the NRA and Texas State Rifle Association. Registered and active voter.