I have been thinking on this for awhile. So last week I ordered a ER Shaw 20" Ruger Precision Rimfire barrel. I made some tools to get the barrel off. It was really easy actually. I knocked out the pin that holds the barrel and receiver together. Then pressed out the barrel.
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This what I started with. It was a compact version. I added a Boyds stock to make it more comfortable to shoot.
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There are some differences between the two guns. The regular American the barrel is a interference fit and pinned. The Precision is just like a AR15 barrel with the nut that holds the barrel on. And the barrel is a slip fit. There is a 0.003" in diameter difference between the two barrels. The American is larger than the Precision. So to make the Precision barrel work I took a 0.0015" stainless steel shim and wrapped the barrel tenon. I thin froze the barrel for several hours in our deep freezer. I then heated up the receiver a little. I put some loctite 680 on the barrel tenon then inside the receiver. Then I slipped them together.
You have to make sure the extracter grove and the other thing on the bolt line up. There is a little room to twist the barrel to make sure they both are in the right spot. I then let it sit for 12 hours to let the loctite do its thing. I then got a 0.123" drill bit and drilled the barrel for the split pin. Then tapped it in to further lock the barrel.
I went out this morning very early to test fire and break it in a little. It shot very well. Better than the factory barrel. I was just using some junk bulk ammo to sight in the scope. I was hitting shotshell hulls at 75yds every shot once sighted in. I have a feeling it will continue to shoot better once there are some rounds through it. Right now i shout about 100 rds today.
Here is a little video showing it a little better.
This what I started with. It was a compact version. I added a Boyds stock to make it more comfortable to shoot.
There are some differences between the two guns. The regular American the barrel is a interference fit and pinned. The Precision is just like a AR15 barrel with the nut that holds the barrel on. And the barrel is a slip fit. There is a 0.003" in diameter difference between the two barrels. The American is larger than the Precision. So to make the Precision barrel work I took a 0.0015" stainless steel shim and wrapped the barrel tenon. I thin froze the barrel for several hours in our deep freezer. I then heated up the receiver a little. I put some loctite 680 on the barrel tenon then inside the receiver. Then I slipped them together.
You have to make sure the extracter grove and the other thing on the bolt line up. There is a little room to twist the barrel to make sure they both are in the right spot. I then let it sit for 12 hours to let the loctite do its thing. I then got a 0.123" drill bit and drilled the barrel for the split pin. Then tapped it in to further lock the barrel.
I went out this morning very early to test fire and break it in a little. It shot very well. Better than the factory barrel. I was just using some junk bulk ammo to sight in the scope. I was hitting shotshell hulls at 75yds every shot once sighted in. I have a feeling it will continue to shoot better once there are some rounds through it. Right now i shout about 100 rds today.
Here is a little video showing it a little better.
