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Thread: .22 rimfire case reforming

  1. #21
    I don't believe the ILRCO round ever reached the market. Winchester made it on the request of the Illinois Arms Company, who had designed an automatic carbine with an enormous drum magazine around the .22LR cartridge length, and found that outside lubrication made it too prone to stoppages. I think they pinned their main hopes on a full auto version for law enforcement, and it is hard to think of a law that that exactly fits. Even in an exceedingly violent riot, there are always going to be a few journalists or Ivy League sightseers in the crowd.

    Although the .22WCF is usually considered obsolete, CCI made some not long ago. At a guess it would be expensive and hard to find. They loaded it with a jacketed bullet although they claimed only 1300ft./sec., and said it wasn't recommended for pistols as a result, since they often had tighter bore dimensions. That seems curious logic. I can remember when Eley High Velocity .22LR, in the 60s, claimed a muzzle velocity of 1400ft./sec. with a 40gr. solid or 37gr. hollow point bullet of conventional LR design. Their claimed velocity has since reduced, and I don't know whether it was a genuine design change or driven by the introduction of the hobby-priced chronograph. But the original version was barely detectably inferior in accuracy, with the Brno .22 sporter I bought in 1970, to the target rounds they still sell around the world. I can't see why CCI needed to go jacketed, which possibly killed the chances of manufacturers bring out new .22WRF firearms.

  2. #22
    Boolit Master
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    The 22 LR and the 22 WMR do not use the same size bullet. The 22 WMR is larger in diameter and the 22 LR uses a heeled bullet. They are close enough that the larger bullet will pass through the smaller barrel but the smaller 22 LR bullet would be a lose fit that might or might not expand enough to obturate. Furthermore but its shorter bearing length would probably reduce its accuracy as could yaw while still in the barrel.

  3. #23
    Boolit Master Traffer's Avatar
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    The 22wmr bullet is .224". The 22 long rifle bullet is from .223" to .2255" That would put the 22WMR diameter squarely in the mid range of 22lr. There are several differences in the bullets themselves though. The LR uses a rebated hollow base bullet. It is rebated because the case of the 22lr is the same diameter as the bearing surface of the bullet. The 22lr is greased or externally lubricated. because the bearing surface has to be lubricated. The 22WMR is not rebated because the case is larger than the bullet allowing the whole bullet to fit into the case. It is also not greased or externally lubricated because the bearing surface is inside the case (and so is the lube) Other wise they are the same diameter and same weight. As I swage fro the 22lr it is easy enough to change my dies to make the 22WMR bullets from the same nose portion of the die. I only need to change the base punch to not create the rebated portion. It is actually much easier to make a 22WMR bullet than it is to make a 22lr bullet for that reason. I also powder coat the bullets. Creating a bullet that needs no lube either interior of exterior. Here is a picture of some of my rejected swaged bullets for the 22lr. You can see the rebated area of the bullets. That is not necessary in the 22WMR. All I have to do is continue the same larger size diameter all the way to the heel and presto I have the right shape and size for the 22WMR.
    Click image for larger version. 

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    Quote Originally Posted by BAGTIC View Post
    The 22 LR and the 22 WMR do not use the same size bullet. The 22 WMR is larger in diameter and the 22 LR uses a heeled bullet. They are close enough that the larger bullet will pass through the smaller barrel but the smaller 22 LR bullet would be a lose fit that might or might not expand enough to obturate. Furthermore but its shorter bearing length would probably reduce its accuracy as could yaw while still in the barrel.
    Jedediah Morse
    "To the kindly influence of Christianity we owe that degree of civil freedom, and political and social happiness which mankind now enjoys. . . . Whenever the pillars of Christianity shall be overthrown, our present republican forms of government, and all blessings which flow from them, must fall with them.".







  4. #24
    Yes, Traffer is right. The difference in bullet diameter is very slight, and it is the case diameter that is different. The .22LR bullet is more tolerant of being reduced by slightly tighter bore dimension, and often is, because of its softness and the reduced base being less likely to suffer asymmetrical finning. But that is once the bullet starts to move.

    Various manufacturers have made dry lubed, non-tacky .22LR rounds, which begs the question why they aren't all like that. I am not sure whether powder coating etc. would give the highest target-shooting accuracy, or enough rapid fire, especially with high velocity rounds, to heat the bore surface. But I am pretty sure its advantages are worthwhile for the average sporting shooter.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check