No. This is a .22 caliber vs .243 caliber (.243 being a 6mm).
Unknown.
Usually a custom job these days.
The .22 bullet is smaller than the 9mm in size, (about 6mm) and is lighter in weight.
Absolutly, The 6mm Remington is a great caliber and is very similar to the .243. You should have no issues taking down any North American White-tail with the 6mm. It is also a low-recoil and accurate claiber.
Impossible to answer. Are you referrring to a 25ACP or 9MM?
It depends on the particular model of the rifle, not the caliber it is in. What model and make is it?
Usually not. A BB is .17 caliber and a 6mm pellet would be .236 caliber. That means that a 6mm BB gun would be imaginary. There are .17 cal. pellet guns and there are .22 cal. pellet guns. You could drop a BB into a .22 cal. pellet gun and it would probably be ejected if it didn't roll out the barrel first. Always read your owner's manual and become familiar with the recommended ammunition and operating instructions.
The .24 is not the caliber all airsoft bb's calibers are 6mm the .24 is the grams which is how much it weighs.
6mm Remington twist rate is 1 in 9, 244 Remington twist rate is 1 in 12. The 1 in 12 twist will not stabilize long 100 grain bullets while the 1 in 9 twist will.When the the caliber .224 Remington's name was changed to 6mm Remington, the twist rate was changed.
It is a West German .22 caliber pistol of very poor quality. Many are unsafe to fire. Please have checked by a gunsmith.
Browning made the "Baby Browning" in Belgium for several years, on the muzzel of this tiny 6 shot automatic it states .6mm. It does in fact take 25 caliber ammunition.