For us to answer, you would have to define "better". I can target shoot at 50-100 meters with a .22 target rifle, and I can't do that with a pellet gun. But I can target shoot in my basement during bad weather with a pellet gun- and I can't do that with my .22s.
No.
No
A 22 WMR cartridge should be a bit too fat for a 22 LR chamber. If the magnum shells will go into the cylinder but it is NOT marked 22 WMR, I wouldn't shoot it at all! If it IS marked as a magnum, don't use standard 22s.
Magnums usually shoot faster. Hence the term Magnum
243
Any firearm chambered for 22
You should never try to fire anything in any gun other than what it is designed to shoot. The .22 rounds will most likely not fit into the magazine or feed into the pistol. If they do, it can be dangerous if it actually fires. Additionally, .25 ACP is a centerfire cartridge where .22s are rimfire.
The fastest .22 LR cartridge, fired from a rifle, has a max speed of ABOUT 1769 feet per second- or about 1193 MPH. Other 22s are slower, running about 954 MPH.
The plural form is 22s (twenty twos). Example: We have a dozen 22s left in stock.
No. Bad Idea! BB's a .177 in size not .22
more info is needed what is the name of gun ? The Shooters Bible has cal.22s that range from 40-XBBR KS. to Model 597.