Isn't this literally the "old" .22 Long cartridge?
I thought the old .22 Long was simply the .22 Short bullet in the .22 LR case. I don't remember the performance being enhanced, although I thought it should be. Like a big car motor in a mid-size sedan.
https://waltherarms.com/shop/federal-punch-200-rounds-promo-pack-22lr
They also have 100 packs of .22 WMR for $22. Not too bad.
*The ONLY ammo I've found so far that reliable functions in my little Beretta 21A is .22 LR Mini-Mags. The old industry stand-by. If it won't run with Mini-Mags, you have some tinkering to do.