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The .22 WMR case dimensions are entirely different from the .22 short/long/long rifle cartridges, whose differences are primarily case length.
The .22 WMR has a significant taper to the case and does not use a "heeled" bullet as does the .22s/l/lr cartridges. If you try to chamber a .22 WMR in a .22 long rifle chamber you will quickly notice the difference. Not a good fit at all. Notice the large difference between the base and rim diameters.
.22LR vs .22WMR
.223 bullet dia .224
.225 neck dia .240
.225 base dia .241
.275 rim dia .291
.040 rim thick .046
.590 case length 1.052
.985 total length 1.350
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