It depends on what you mean. If you mean legally, it depends on the state. Some states require a handgun to be carried in a holster, but most don't. In Tennessee where I live, if you have a handgun permit, you can carry the gun any way you choose.
Otherwise, you basic options are, holster or not in a holster.
Unfortunately yes. But there are ways around it.
Data not out yet.
Which handgun? Some hold ONE cartridge- and at least one holds 100. There is no set number.
They claim 400,000.
Which model? It matters.
No limit, however, you need to check the state law on ANY loaded handgun.
the world may never know.
No set number of numbers and letter..
There are many handgun rounds that exceed the 44 mag. 454, 460, 500 to name a few.
Many gun dealers do take firearms in trade. It is up to the individual dealer. However, you must be able to legally own a handgun to do that.
If you have a handgun carry permit, definitely. The handgun carry permit covers "any handgun that you legally own or posses."
Asking someone how good something is will yield answers of opinion. It is modeled after the Walther PPK, and many feel that it actually IMPROVES upon the famous handgun in many ways. It is also half to one third the cost of a Walther PPK. Like most handguns, it is not meant for engagements much greater than 10 meters. As with any semiautomatic handgun, it may be particular with the type of ammunition used--especially hollowpoints. The Bersa Thunder does everything a good handgun should, and is quite reliable. An honest assessment would give it a 9/10.