[Pressman]

I found a hard used one today. Older Marlins are scarce in my neck of the woods.
Looking at the bore with a scope shows several major rust spots, a through cleaning and polishing will reveal if it will be a great shooter or just so-so. Hoping for the former as I have a new Glenfield scope to put on it.

The rifling is micro groove, I think. It's straight cut, no twist. I have never seen a Micro Groove bore so asking is this normal?
Ken

 

['ol shooter]

Nice find, it's in better shape than my pawn shop Glenfield 100G was. Some stock refinishing and metal TLC with 4-0 steel wool and oil, followed by a good touch up blue will work wonders. I have never heard of straight cut rifling, but have read about smooth bore .22's of differing brands here on RFC. Here are a few pics of mine before and after, the metal responded well to Brownell's Oxpho Creme touch up blue. Take pics before ,during, and after, we all like pictures. It will give you a lot of satisfaction when you have the old girl back in good shape again mechanically and cosmetically. Mine shoots very well.
Before

After

Before

After

 

[toomanyguns]

Hope your project gun turns out to be a good shooter. I once had one that was accurate. Love the way they load.

 

[Pressman]

I test fired it. I have access to a 25 ft test range. It showed decent accuracy before cleaning. I am working on the bore now, there's a large rusty patch near the muzzle that I hope will clean up.
Ol'shooter you've got a nice rifle there. Mine should look as good when finished.
I enjoy finding old and unloved 22's and bringing them home and back to life.
Marlins are scarce and I don't have much info on them.
Ken

 

[Pressman]

Bore cleaning found this mess. It's 4 inches from the muzzle and a half inch long, it covers the entire circumference of the bore.
the rest of the bore is shiny nice.
I need to find a way to smooth this out.

Ken

 

['ol shooter]

Is it corrosion or lead? A few passes with bronze wool on a used bore brush will scrape leading out, if it's corrosion maybe an abrasive like JB Bore Brite would help a little. Found a Model 10 barrel here if you are interested.

Marlin Glenfield Model 10 Micro-Groove Barrel | 22-Inch | Bolt-Action .22 Caliber Rifle

You are considering a vintage Marlin Glenfield Model 10 Micro-Groove Barrel. It's in excellent shape with only light wear from usage, storage, and handling.

oldarmsofidaho.com

 

[ferg]

Never heard of 'no twist' rifling. Anyone know history or intended use?

 

[Pressman]

Fergus, I have it figured out, once I had the bore shiny clean it was easy to see and feel the twist. This rifle had one of the dirtiest bores I have encountered.
Yesterday I took the rifle along to the club indoor range. I participate in a NRA position league during the winter.
Firing from a standing rest I was able to shoot 1 inch groups at 50 feet. That's as good as it gets at my age and eyes.
I had considered rebarreling but if it's going to shoot this good I will keep the original barrel. I will know for sure this summer at the outdoor 25 yard range.
I have a NIB Glenfield scope to mount as the final step in restoration.
So, I set the action aside and move to the stock. The first thing is scrapping all the old finish off.
Ken

 

['ol shooter]

The finish comes right off with Citristrip and a gentle scraping with a plastic putty knife. I washed my stock down with real mineral spirits, it cleaned it up real nice.

 

[Pressman]

Once I started removing the finish I found a nice birch stock. This is way better than the beech I was expecting. Birch will take a stain well and give a near walnut appearance when finished.
It is now stained with Valspar "gunstock" stain and drying with the first coat of Dembart oil finish.