The .22 is a larger slug and will have more knockdown power than the .177.
The 22 is slightly larger than the .177 cal. The 177 Pellet is almost the same diameter as the .175 BB.
diameter
No it will jam in the barrel.
No. a 177 is a 4.5mm pellet. A 5mm is a 20 cal pellet. A 5.5mm is a 22 cal pellet Don't try it in the wrong airgun.
Well, the .22 is bigger than a .177, but the "strength" depends on the action of the air rifle that shoots them. Certainly the .22 will have more hitting power assuming that the pellets are traveling at the same speed.
.22 caliber may be a few FPS slower but it will have more knock down power and hit harder. I also suggest using hunting pellets called hollow-point pellets
see the link below for the owners manual. The Marksman Repeater is a 4.5 .177 caliber pistol not a 5.5 .22 caliber pistol.
Only if you have a hunting liscense.
It has nothing to do with velocity. It has more to do with the size, weight and shape of the pellet. I recommend a .25 Cal or larger pellet. (Yes Pellet rifles come in different sizes) The smallest to the largest are .177, .20, .22, .25, 9mm, 357 cal, 45 Cal, and 50 Cal. I also recommend using hunting (hollowpoint) pellets. The heaver the better the knock-down power. (Pellets come in different weights.) Also check to see if your location allows hunting with a pellet gun.
Yes it can provided you can find the .22 barrel. Beeman makes a dual barrel .177 & .22 rifle
the CS6M22X I believe is the .22 version of the Crosman Phantom .177 cal rifle. See the link below for the .177 version of the parts list.
The medalist is a .22 caliber pellet pistol. You need to purchase .22 cal pellets not .177 cal pellets. you can find them at most large sporting goods stores.