7mm Mag Rechamber

[AZShooter]

Fishman1978 things used to chamber:

Caliber specific tapered range rod made by Pacific Tool and Gauge. true it in a four jaw independent chuck. true at headstock with the spider moving the range rod. Floating reamer holder that has a morse taper shank that fits into the tailstock. Also use an adjustable reamer stop kit to help get the exact headspace.

Range Rod 17 - 30 Cal Rifle-PTG-10392

www.pacifictoolandgauge.com

MANSON PRECISION DAVE REAMERS FLOATING REAMER HOLDER | Brownells

Check out MANSON PRECISION DAVE REAMERS FLOATING REAMER HOLDER | Brownells available Online at Brownells Today and many more Reamers & Cutters products are available in our Tools & Cleaning Department.

www.brownells.com

Micro Adjustable Reamer Stop Kit - (MARS Kit)-825F34A4

www.pacifictoolandgauge.com

 

[Huntaddict]

It's a proof carbon barrel. The shank looks smaller than my other barrels, I'm not sure who the smith was for this barrel.

Proof barrels are either 1.200 or 1.250 with a 2 1/2 in shank - you can probably get away with cutting 1/4 inch and rechambering depending on which caliber you choose. I would go 7PRC but you need to consult your smith to make sure its within specs

 

[Huntaddict]

Here's a picture of the shank, it seems pretty small to me, compared to what my PBB or Xcalibers have.

I have a buddy who has chambered and made a few prefits in the past for me. After talking with him this morning, he doesn't want to have to deal with cutting off the tenon threads and trying to pick it back up.

I may just keep the 7RM as is, i was just curious on what my possibilities would be to clean up the chamber into a different cartridge. Thanks all for the responses!

Looks pretty short, like maybe its been cut already - might get away with 7PRC but nothing long mag at this point

 

[comen]

I just picked up a 7mm mag barrel and was thinking I could cut a bit off and rechamber. Has anyone done this before? If not, what could I possibly rechamber this to?

I re-barreled a 300 win mag to 7mm-300win. Runs 195 Berger from a 27" X-Caliber 5R 8 twist at 2950 no pressure.
I had a factory Remington 7 mag rechambered to a 7mmx68S Improved. Took off a couple threads to clear out the belt recess and had the reamer keep the original 8x68 shoulder angle while blowing out the case to .500: at the shoulder body junction to clean up the 7 mag shoulder. ended up with a 25.5" barrel that shoots Speer 175 gr GS or Hornady 175 interlocks at 3100 fps with LRT powder. It was necessary to bush the bolt face and mill it for the smaller 8x68S rim. Used a Sako extractor