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Converting rimefire to centerfire
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xringchaser
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December 30, 2018 - 11:53 am
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I have this idea that if I have a.22 revolver, I can convert it to a .32 Magnum by boring the cylinder and barrel. 

The only hang up I see is with the firing pin strike location. 

Ive had conversations with someone that has more experience than I that this can be corrected someway. 

Does anyone know if it’s possible?

 Thanks in advance. 

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SCORPIO
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December 30, 2018 - 1:57 pm
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The firing pin will need to be replaced,  but the barrel will be your biggest problem.  The frames have different threads to prevent the a code tal mix up of cali ers.  Basically to prevent  someone from trying to shoot a 32 down a 22 diameter tube.  Now you could get a custom barrel tube made, but that's going to be costly and time  consuming.  Also, the 22 cylinder is shorter than the 32 a d 357 mag so you'll need a new one of those also.  

So my answer is yes, it CAN be done  BUT, the cost and complexity makes me wonder if it SHOULD be done.  For what you'll spend, why not put that money towards a different gun?

Anything worth doing is worth doing well.

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xringchaser
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December 30, 2018 - 2:40 pm
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So what do you mean by reached? I think I have the barrel issue figured out. 

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December 30, 2018 - 4:12 pm
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Replaced.  Sorry auto correct changed it and I didn't catch it.

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xringchaser
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December 30, 2018 - 4:50 pm
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So I just need to buy a centerfire firing pin and put it in my 22 LR frame?

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December 30, 2018 - 6:53 pm
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For starters.  The barrel is your biggest issue.  You can't just scew in a 32 barrel tube.  You'll need to have one made to fit your frame threads.  Also, the cylinder is shorter on 22s than in the 33 and 357s, so you'll need one of those too.  

Anything worth doing is worth doing well.

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xringchaser
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December 30, 2018 - 8:09 pm
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So I sent my 22 LR barrel to get reamed and rebored to 32 cal. and I sent my cylinder to a different guy to get reamed to 32 mag and have it back. It is long enough. 

I had the barrel guy redo a S&W 617 barrel and it shoots great. 

I don’t have the barrel back yet as there is a 3 month backlog. 

I believe both barrel and cylinder will work. I just need to figure out the firing pin problem, I think?

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moto vita
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December 30, 2018 - 11:27 pm
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xringchaser said
So I sent my 22 LR barrel to get reamed and rebored to 32 cal. and I sent my cylinder to a different guy to get reamed to 32 mag and have it back. It is long enough. 

I had the barrel guy redo a S&W 617 barrel and it shoots great. 

I don’t have the barrel back yet as there is a 3 month backlog. 

I believe both barrel and cylinder will work. I just need to figure out the firing pin problem, I think?  

 What did the barrel guy do to the 617, was it a caliber conversion too?

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December 31, 2018 - 1:14 am
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The firing pin is positioned in a different location on the .22 vs. a centerfire caliber.  It's actually the same firing pin on both the rim and centerfire calibers, it's just positioned in the frame higher toward the top strap.  I'm quite sure you cannot do a conversion. 

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xringchaser
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December 31, 2018 - 11:08 am
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The S&W 617 is a .22 LR and he converted it to a .32 cal. I’ve had this done twice, once by a different guy that opened the bore up and inserted a liner and once by the other guy that rebored the barrel to 32 cal. Both shoot great. 

I knew I had to use a different frame in the S&W, so I sourced a S&W 66 frame. 

This one I was told I could use the same frame, as all the small frames were the same. Maybe I got some bad information?

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December 31, 2018 - 12:27 pm
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Anything worth doing is worth doing well.

My father

If a man designed it, and a man built it, then a man can fix it.

My grandfather

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xringchaser
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December 31, 2018 - 8:53 pm
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xringchaser said
The S&W 617 is a .22 LR and he converted it to a .32 cal. I’ve had this done twice, once by a different guy that opened the bore up and inserted a liner and once by the other guy that rebored the barrel to 32 cal. Both shoot great. 

I knew I had to use a different frame in the S&W, so I sourced a S&W 66 frame. 

This one I was told I could use the same frame, as all the small frames were the same. Maybe I got some bad information?  

Not sure there.  I can post up a photo of both when I have a minute if you want.

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January 1, 2019 - 10:10 am
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January 1, 2019 - 12:01 pm
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xringchaser
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January 1, 2019 - 9:13 pm
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I stand corrected on the firing pin...they are different.  The .22 is a blade-type pin and the center fire is a pin-type, however, they are in fact located at different positions in the frame.  Attached is a .22 and .32. If you bored everything on centers I'm not sure where the firing pin will hit.  What about the extractor....what are you doing with that?  

 

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January 1, 2019 - 10:09 pm
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xringchaser said
Yes   

Is it blasphemy to ask if it has to be a Dan Wesson?Though, I think I remember a post a while back about one for sale sonewhere. Probably got picked up already though. 

I saw a few .32 H&R mag revolvers by other makers for sale on gunbroker.

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xringchaser
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January 2, 2019 - 10:03 am
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The extractor was reamed with the cylinder. 

I put a fired case in the frame/cylinder and pulled the trigger. The case has a hit between the side of the primer pocket and the primer. It did strike the edge of the primer so it may be close?

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