Let's use the correct terms- BULLETS are the part of a CARTRIDGE that come out of the barrel. .32 Cartridges are now centerfire, but many years ago were rimfire. .32 rimfire guns have not been made in about the past 100 years, and are considered obsolete. There are also several DIFFERENT .32 centerfire cartridges- .32 Auto, .32 S&W revolver, .32 Long, .32-20 revolver, etc.
Centerfire
32 long is a rimfire cartridge.
Bullets are not likely to do you any good. You can not reload rimfire ammunition. You need to search for loaded ammunition.
Generally no, and it is fairly dangerous to try that. .32 rimfire was a low pressure black powder cartridge. Good chance of damaging gun AND the shooter, as well as innocent bystanders.
.32 long what? That's a cartridge designation, and even at that it could be .32 Long Colt, .32 S&W Long, .32 Long (rimfire), or .32 Long Rifle (Centerfire).
Hopkins & Allen has been out of business since 1916. Many of their revolvers were in .32 RIMFIRE Short. This is an obsolete cartridge- once every 10-20 years a manufacturer may produce a limited run of ammo. A few were made in caliber .32 S&W centerfire. Would suggest you have the gun examined by a smith to determine which cartridge, and the safety of the gun (It IS probably over 100 years old). 32 S&W centerfire is a common cartridge- .32 Rimfire is very scarce, and not likely to be found- Sorry.
The smallest, best known centerfire handgun round is the .25 caliber (or 6.35mm). The practicality of the .25cal is questionable: you have all of the costs of a centerfire round, with not much more energy than a .22LR rimfire. In fact, nowadays, you are much more likely to find .22LR pistols than a .25cal. One step up from the .25cal is the .32 caliber. This is just about as out-dated as the .25cal, but there were some very popular weapons in .32 caliber, the Walther PPK (James Bond's weapon of choice) is said to be a .32cal (not a .380ACP). There are also pistols made to shoot rifle (long gun) rounds. These tend to be smaller caliber than a .25 cal, but are fairly modern (like a pistol designed to fire .17cal HMR).
fifteen hundred
Cannot answer with info you provided.
.32 caliber
In general, no. While it may be possible, the rimfire round is especially dangerous to fool with. Most .32 RFs used heel seated bullets- with special loading dies, you will not get the case crimped back to the heel of the bullet. Very unsafe to attempt. And when adding "fresh" powder- which powder? How much? When I reload centerfire ammo, I am using published figures from the companies that make gunpowder- but have not seen any data published on reloading .32 rf.
The MP40 utilized 9mm bullets, in a 32-round stick magazine.