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Old 06-14-2019, 06:33 PM
Welldone7

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17 HMR or 22 WMR conversion



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I have a 57JSR that is chambered in 22LR. How big of a deal would it be to covert to either 17HMR or 22 Magnum? Does anybody have any experience with doing so?
Thanks
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Old 06-15-2019, 12:31 PM
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Thomasconnor
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All I can think of are problems.

Mainly in the receiver. Is it cut for the bolt to open up far enough to pick up the longer round, and is it cut long enough in the mag well area for a round to pass through? Is the port long enough to eject a round?

Where would you get new bottom metal and even if it took an Anschutz magwell, where would you get that and is the receiver drilled and tapped for such? I understand Cooper doesn't sell parts?

The barrel would have to be changed. It would probably cost a lot less to just buy one...Tom
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Old 06-15-2019, 01:03 PM
Welldone7

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I hear ya. That does sound like one PITA!
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Old 06-17-2019, 05:09 PM
Welldone7

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What about a17HM2 conversion? That seems a little less complicated. Swap a barrel and good to go?
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Old 06-17-2019, 06:08 PM
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Yes that should be a simple barrel swap. 17HM2 that is.
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