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Re-chamber ??

Colt Super
I have an old, heavy, single shot Savage .22.

It's a pretty junky gun that I don't think I've shot in thirty years.

Any thoughts/opinions/experience about re-chambering it to .22 WMRF ??

It's a really long barrel. Anyone know the most ballistically efficient length for that cartridge ??

Thank you.

Doug
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Comments

9 comments

Date Votes
  • mrbruce
    The interior dimensions are different last I knew...
    A new liner would be the best bet....
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  • iwannausername
    22lr bullet is 221, 22wmr is 224... that may cause issues.
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  • Colt Super
    Can any 'smith do a new liner and re-chamber ??

    Sounds like the cost might approach just getting a new rifle.

    Doug
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  • tsr1965
    Doug,

    Why don't you post a picture of this rifle to show us, before you cut it up. Perhaps that heavy old savage is something special.

    Best
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  • 11b6r
    .22 mag and .22 LR use different bore diameters as well as chambers- and the rim thickness of a .22 mag is greater, so headspace will be an issue.

    Pressures of both rounds are the same- 24,000 SAAMI- until you try driving a jacketed bullet down a smaller bore. Yes, most of my 22 mags are jacketed, non-heel seated bullets.

    can it be done? Yeah. Will it cost you more than buying a .22 mag? Almost certainly.

    Not sure about .22 Mag, but recall (vaguely) something about .22LR getting max velocity from a 12 INCH barrel- max gas expansion- over that, bullet actually starts to slow slightly from friction.
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  • Colt Super
    quote:Originally posted by tsr1965
    Doug,

    Why don't you post a picture of this rifle to show us, before you cut it up. Perhaps that heavy old savage is something special.

    Best


    I'd love to, but I've been having problems with Photobucket for damn near a year.

    Gotta fix it before my divorce-o-mania giveaway, though.

    Doug
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  • spasmcreek
    i always thought 22lr bbl length was 16" & 22mag was 26"...have checked a number of older bbls ID with 0.001 increment dowels & found a variation in size that made no real diff in rechambering to 22 mag...newer barrels have been mfg to closer tolerances...main consideration was type & strength of action..& so far have had no problems with procedure...have had to resize & depth set some bolts with countersunk ends to handle mag case rim & this is a by feel process as about every brand mag case has diff rim thickness...want to get average closing feel right...
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  • JustC
    Doug,..you will come out money ahead by buying a new rifle. Re-rifling or sleeving puts you at the price that a new 22mag would cost
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  • Colt Super
    Thanks, y'all.

    Good advice - again.

    Doug
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