kev74
20×102mm Vulcan
I picked up an older 10/22 last weekend. It was made in 1989 and looks like it spent a lot of time in someones barn. The barrel has a bit of surface rust, but the bore is clean. There are some dents and dings in the receiver, trigger group (aluminum) and stock. Over all, the rifle is in good shape, but didn't look like it was ever cleaned. After a quick cleaning, I shot about 50 rounds through it. Accuracy was ok, but I got a few stovepipes when I shot it rapidly.
My intention is to see what improvements I can make to this thing to improve functioning and increase accuracy - using factory parts as much as possible and modifying them as needed.
Here's what I started with.
The first thing I did was to clean up and slick up the bolt. I also radiused the bottom edge that resets the hammer. This is supposed to reduce the force required to reset the hammer. I took the opportunity to fancy things up a bit too. Here is a before and after.
Before:
After:
I also went over the extractor. I polished all the surfaces, made the hook a little deeper and put a slight bevel on the front edge. The front hook wasn't flat all the way across, so if this still gives me any trouble, it will be replaced.
Next I worked on the trigger group. As received, the trigger pull weight varied from 7.5 - 8.5 lbs. I polished anything that rubs, reduced the trigger return plunger spring weight, and recontoured and polished the hammer hook. I had previously made a little jig for my mill that lets me get pretty precise when working on the hammer.
Trigger pull is now a very smooth and consistent 2.6 lbs.
I'll post more as I get it done.
My intention is to see what improvements I can make to this thing to improve functioning and increase accuracy - using factory parts as much as possible and modifying them as needed.
Here's what I started with.
The first thing I did was to clean up and slick up the bolt. I also radiused the bottom edge that resets the hammer. This is supposed to reduce the force required to reset the hammer. I took the opportunity to fancy things up a bit too. Here is a before and after.
Before:
After:
I also went over the extractor. I polished all the surfaces, made the hook a little deeper and put a slight bevel on the front edge. The front hook wasn't flat all the way across, so if this still gives me any trouble, it will be replaced.
Next I worked on the trigger group. As received, the trigger pull weight varied from 7.5 - 8.5 lbs. I polished anything that rubs, reduced the trigger return plunger spring weight, and recontoured and polished the hammer hook. I had previously made a little jig for my mill that lets me get pretty precise when working on the hammer.
Trigger pull is now a very smooth and consistent 2.6 lbs.
I'll post more as I get it done.