query realted to guns

Question
qus 1: can a pistol fire a bullet of 8mm/.315 bore?

qus 2 : can one  weapon fire both type of cartiridges i.e 12 bore , 8mm, .315 bullets?

qus 3:which kind of bore can result into deposit of 88 pellets in one single injury ?


Answer
1) Although throughout the years there have been some pistols chambered in some form of 8mm (the Japanese Nambu; the 8mm Steyer), modern firearms that fire 8mm are either blanks for training guns (such as Simmunitions). There is to my knowledge no commercially available serious fighting handgun in 8mm.

2) If by "12 bore" you mean 12 gauge shotgun, you are looking at a bore that is around 1 inch in diameter, so the answer is "No" unless you have a break-top gun that is bored for shotgun on top and rifle (8mm Mauser) on bottom. Taurus makes a revolver that can chamber and fire .410 shotshells or .45 Colt cartridges, but that's about as close as you'll get to what you are describing.

"Cartridges" and "bullets" are two different things. For example, both the 7.62 NATO and Soviet 7.62X39 take the same diameter bullet, but they are not the same cartridges and one won't work in a gun chambered for the other. Likewise 9mm NATO and .357SIG have the same projectiles, but a gun chambered in one cannot use ammunition for the other.

3) When you speak of "bore" and "pellets" you are talking shotguns. A 12 ga 00 Buck standard charge has 9 @ .32 caliber pellets. By contrast a 12 ga with #9 shot probably has hundreds of pellets. So what bore shotgun would have 88 pellets is a question with not enough information to answer - you would need to know what size shot you are talking about.