Cutting a Remington 870 barrel........ [Archive] - Varmints Den

: Cutting a Remington 870 barrel........


Monkeyman
03-22-2011, 09:13 AM
...... is there enough wall-thickness to thread for Remington chokes after cutting? I'm after a 22" barrel.

CarlP
03-22-2011, 09:19 AM
I have an 870 that I got about 25 years ago which originally had a 30" full choke barrel. The previous owner had it modified to accept choke tubes so he could switch between full and modified. I am not sure which brand of choke tubes were used but I don't think they were Remington.

kaferhaus
03-22-2011, 09:24 AM
No you won't be able to thread it for "Rem chokes". Hastings along with some others makes a "thin" tube that can be retrofitted. The tooling needed to do it is about 400 bucks.

Much cheaper to just buy another barrel.

And why 22"?? 18s and 24s are easy to come by and cheap.

gunsandgunsmithing
03-22-2011, 09:41 AM
Here's the deal. Measure the barrel o.d. at the desired location, and measure the tap. In the case of 12ga. RemChoke, the tap should be .814"-32tpi. Subtract .814 from the barrel o.d. at the thinnest spot(because bores are often not perfectly centered). Divide the difference by 2. This will give you the wall thickness of the barrel at the threads. Use .015" as an absolute minimum wall thickness necessary. In my experience, you can use Rem Chokes on typical 870 barrels. Just measure twice and cut once, or not at all if too thin.--Mike Ezell

Keith in Ga
03-22-2011, 09:49 AM
I've got a 20" factory Remington bbl, uses Rem choke tubes, with rifle sights. I don't see why a gunsmith couldn't thread the bbl.

Monkeyman
03-22-2011, 10:07 AM
Much cheaper to just buy another barrel.

And why 22"?? 18s and 24s are easy to come by and cheap.

Ideally I want a ribbed 22" barrel with high-viz bead (might even clamp a TruGlow on the rib) but would settle for a 24" barrel. Quick internet search has not turned up one.

Monkeyman
03-22-2011, 10:09 AM
Here's the deal. Measure the barrel o.d. at the desired location, and measure the tap. In the case of 12ga. RemChoke, the tap should be .814"-32tpi. Subtract .814 from the barrel o.d. at the thinnest spot(because bores are often not perfectly centered). Divide the difference by 2. This will give you the wall thickness of the barrel at the threads. Use .015" as an absolute minimum wall thickness necessary. In my experience, you can use Rem Chokes on typical 870 barrels. Just measure twice and cut once, or not at all if too thin.--Mike Ezell

Thanks, will do some measuring later.