Shameless Plug for Flex-Hone

[blacksmith]

We all know that Mossberg bores are bit rough-and-tough. We've tried the steel wool trick in the past and got what we paid for: not much.

Today we experimented with the Flex-Hone system from Brush Research. We are very impressed with the quality of this company. Their firearms products were developed from the real business- industrial scale metal working.

The bore brushes come in three (3) sizes and three (3) grits. Chamber, forcing cone and bore. The grits are 180, 400 and 800. The 800 grit alone produced the best results. The forcing cone brush seems like an unnecessary half-step. The bore brush will pull double duty on the bore and forcing cone. The chamber brush pulls double duty on the chamber as well as the magazine tube.

The results are impressive. By far the best I've seen with Mossberg. They're not Benelli chrome-lined quality, but the pictures speak for themselves. This is after the forcing cone brush, and before the bore brush.

 

[oli700]

holy crap I need glasses

ETA: Googled it.... trippy, just like the hones for engine cylinders

 

[blacksmith]

Federal birdshot has always done well. Olin-Winchester is garbage. In the past we've seen extraordinary failure rates with Olin: every round was hard to extract with about 10% requiring manual removal.

Today we took out the polished barrel. Tested with Winchester and some rusty, beat-up rolled around in the bed of the pickup Federal. Fired about 50 rounds each.

Federal had two hard extractions and one FTF.
Winchester had one hard extraction.

Fired another 50 of the rusty-n-trusty Federal thru a different barrel. This was a surplus LE barrel that is highly polished (or wore out). Zero issues.

Polishing the chamber goes a long way to aiding extraction.

 

[Shotgun Jeremy]

I can't wait to get some of these and do it on my guns and my friends guns! Great tip!

 

[ripjack13]

wowzers ...that sure is one clean hole...