Greetings @Micky Duck,
I read your post on the .22 Savage with a .223 inch groove barrel and thought "Micky has just reinvented the .219 Zipper". This is the .22 Savage shortened ever so slightly and necked down even more slightly.
This is the front page of one of the late Ken Waters Pet Loads articles from "Handloader Ammunition Reloading Journal" from 1974. Ken wrote these from 1966 until sometime after 2000 and died recently in his late 90's. An improved version called the .225 Winchester was brought out in the 1960's. Either would work in the Baikal but the loads for the .225 would need to be toned down a bit. Single shot rifles are still made in Europe for the 5.6 x 51R (.22 Savage) but they cost rather more than a SH Baikal. Norma sells ammunition and cases but a reamer is likely to be a problem. Let us know if the project advances. The other option would be a .222 Rimmed on a .222 Baikal which would only need a rim recess cut. Bertram in OZ makes the cases. I saw some in a sports shop in Tamworth a few years back.
Regards Grandpamac.
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