22 LR vs 22 WMR in revolvers

Discussion in 'Handguns: Revolvers' started by skfullen, Jan 10, 2021.

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  1. Carl N. Brown

    Carl N. Brown Member

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    There is very little gain in velocity with the short barrel NAA mini-revolver in .22 WMR vs .22 LR. My impression is the advantage in the NAA Mini is not any gain in velocity, but in the fact almost all .22 WMR cartridges will go bang, but .22 LR cartridges are more likely to have priming issues.
     
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  2. MedWheeler

    MedWheeler Member

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    Fiv3r writes:

    I have a NAA Sheriff waiting for me for that very reason (and because I liked its name.) The selling FFL forgot to include its license copy, so my FFL is delayed in being able to log it through before releasing it to me, so I have to wait a few more days, I guess.
     
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  3. MedWheeler

    MedWheeler Member

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    Carl N. Brown writes:

    I don't know if either is "better-primed" because both are rimfires, but the crimped case mouths on the WMR does make it less susceptible to moisture/humidity damage..
     
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  4. GeoDudeFlorida

    GeoDudeFlorida Member

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    My wife has and used to carry an NAA mini with the .22mag cylinder. Her reasoning was, NOBODY within a half mile was going to miss hearing that thing go off and call the cops. Better than any rape whistle out there.
     
  5. InTheField

    InTheField Member

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    .22 mags (40 grain Super-X) from my 6 inch SW648 show a doubling of energy levels compared to my 6 inch sw35 .22 36 grain long rifle hollow points (1375 fps for 168 foot pounds vs 965 fps for 76 foot pounds), and a 10 to 20 percent energy advantage over .22 long rifle 36 grain hollow points from a RIFLE. My 4 inch sw651 mag and 3.5 inch 51 mag show similar to very slightly below the energy energy levels to .22 long rifle cartridges from a rifle (essentially the same). Tests were done over a chronograph on my home range and energy figures determined from the resulting velocities. Realize, the hollow point mags had a 9% bullet weight advantage over the hollow point long rifle bullets, helping increase resulting energy levels (it is not all about velocity). Yep, I like my mags!
     
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  6. Antihero

    Antihero Member

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    Screenshot_2021-01-07-17-11-39.png Screenshot_2021-01-07-17-16-08.png
    To give you an idea of the velocities between 22lr and 22wmr in short barrels
     
  7. WestKentucky

    WestKentucky Member

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    Absolutely, but only in longer barrels. As mentioned, the gains are relative to barrel length, and are significant in a longer barrel. You go from woodchuck capable to coyote capable in a hurry simply by swapping cylinders. The difference is so significant in fact that I have seriously considered buying a second single action 22 with only the 22lr cylinder and leaving my RSS in 22 mag permanently. If I stumble across a cylinder-less RSS for a song it’s a done deal. The 22mag also seems more accurate out of every convertible gun as well but I can’t nail down the reason as the bores seem to be the same as other 22s.
     
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  8. chicharrones

    chicharrones needs more ammo

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    I'd like to know what gun has that 4.6" barrel in that American Rifleman data.
     
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  9. GeoDudeFlorida

    GeoDudeFlorida Member

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    The author doesn't say for sure but it seems likely to be a Ruger NMSS:
    upload_2021-1-11_12-15-31.png
     
  10. CraigC
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    CraigC Sixgun Nut

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    That's what I do. Rather than dealing with adjusting sights every time the cylinder is swapped, I dedicate a convertible to one or the other.
     
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  11. doubleh

    doubleh Member

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  12. CraigC
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    CraigC Sixgun Nut

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    4 5/8" = 4.62" = Ruger.

    Any Colt derivative will be 4¾".
     
  13. chicharrones

    chicharrones needs more ammo

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    I wonder how much velocity was lost to that generous cylinder gap?
     
    Last edited: Jan 12, 2021
  14. dbluefish

    dbluefish Member

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    Need I say more?

    Semper Fi

    paul
    fObAe5zkghrdB-iAkNm8YiLC7ph0MFW1yY3-VYsKJscSupx2qdTFUl3_OcQNrltsekcYmPE=w1600-h943-no?authuser=0.jpg
     
  15. Antihero

    Antihero Member

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    It's much more than my heritage difference wise. 1100ish for magnums and 1300 or so for stingers in mine
     
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  16. NeroM

    NeroM Member

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    Like 22 Mag, in a rifle. Also have a 22 Mag Mares Leg- it is great.
    However in a revolver or short barrel pistol - not optimal and getting very expensive.
    Retired 22 mag revolver, replaced it with 38 SPL.
    Accurate, easier on my ears in the field, reliable on appropriate game.
    22 Mag cartridges, if you can find the, run around 25 cents each.
    38 SPL handloads about 20 cents with more power.
     
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  17. 3Crows

    3Crows Member

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    The .22 magnum is more in a rifle and more in a revolver. More FPE, more velocity, better bullet, more bang and usually an impressive fireball from revolvers. Hornady has a Home Defense product that is loaded for revolver/pistol use but is fine in rifles also. I shoot .22 Magnum in a Winchester 9422M XTR and a stainless 5.5 inch Ruger Single Six. I have also found that the reliability of .22 magnum round is generally better than .22LR, at least bulk .22LR.

    I want that Rock Island .22 Magnum 1911 :).
     
    Last edited: Jan 12, 2021
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  18. KevininPa

    KevininPa Member

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    I had read somewhere that the barrels for the convertible SS is sized for the ever so slightly larger in diameter .22 mag. Ever since I had read I'm still wondering if my late fifties dedicated SS barrel is sized to the long rifle round.

    Anybody else have input on this?
     
  19. jmorris

    jmorris Member

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    It’s been a long time so I’d have to test again to give you numbers but using my single six going from 22 lr to .22 mag put the revolver about where a .22lr rifle was.

    Couple that with the extra expense and noise and I imagine the .22 mag cylinder is touching the back of a safe in my house.
     
  20. CraigC
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    CraigC Sixgun Nut

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    The .22Mag out of a handgun is still 150-200fps over the .22LR out of a rifle.
     
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  21. skoro

    skoro Member

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    I have a pair of 22LR revolvers, both 4" barrels.

    My one 22WMR revolver has a 6" barrel. All are S&W; Models 17, 18 and 48.

    That WMR has a lot more mustard than the LRs. In my book, it's worth it. Of course, your intended use is the deciding factor.
     
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  22. GeoDudeFlorida

    GeoDudeFlorida Member

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    The SAAMI minimum specifications for barrel dimensions:

    22 LR: Bore: 0.217 in / Groove: 0.222 in

    22 WMR: Bore: 0.219 in / Groove: 0.224 in

    ...and for bullets:

    22 LR: 0.2255 - 0.0040 in / 22WMR: 0.2245-0.0040 in

    You can slug your bore but you will probably find Ruger splits the difference at 0.2180 in Bore / 0.2230 in Groove. They build strong guns and don't really have to worry about over-pressuring their rimfires with over-tight bores/grooves.
     
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  23. Driftwood Johnson

    Driftwood Johnson Member

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    Howdy

    I have three old Ruger Three Screw Single Sixes. I think 2 of them came with 22 Magnum cylinders, the one on the left and in the center. I'm pretty sure the one on the right only came with the 22 Long rifle cylinder, I'm not really sure at this moment and I am not going to dig them out of the safe right now to make sure. That should tell you right there how much I care about shooting 22 Magnums.

    pmwpof6qj.jpg




    The 6 1/2" barreled one came with the box and some ammo, all ready to shoot. I probably shot some of the Magnum ammo at some time, don't really remember.

    pmnR0NVUj.jpg




    That's how much I care about shooting 22 Magnums in a revolver. I probably even have a box of CCI 22 Magnums squirreled away somewhere. Just not interested in shooting them. If I want more power I will grab a 38.
     
  24. Pat Riot
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    Pat Riot Contributing Member

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    GeoDudeFlorida beat me to it.

    I used to have a Ruger Single Six convertible similar to a Vaquero. In .22 Mag it was fairly accurate. In .22LR it sucked for accuracy. I sold it and vowed never to by a convertible .22 again unless I was buying it for the .22 Magnum aspect of it. I have a dedicated .22LR revolver for that round.

    Now, I do have an old H&R 686 that does okay in .22 LR but is really accurate in .22 Magnum (edited)
     
    Last edited: Jan 12, 2021
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  25. paul105

    paul105 Member

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    Haven't shot my 5 1/2" Freedom Arms M97 in a while. Did limited chrono/accuracy work early on. The .22 Mag cyl was consistently more accurate vs. the LR (limited testing).

    Some chrono results:

    Fed 36gr HP American Eagle .22 LR .............................. 1,058 fps avg
    CCI 33gr HP CCI Stinger .22 LR ...................................... 1,297 fps avg

    CCI 30gr TNT Max Mag .22 WMR .................................... 1,648 fps avg
    CCI 40gr JHP .22 WMR .................................................... 1,404 fps avg

    The M97

    97%20RIMG1971.jpg

    Paul
     
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