I have recently purchased a new mp40 fullsize and this is my first handgun. I've only put 300 rounds through it but have had alot of fun despite the fact that I'm not much of a marksman...yet. I've only had problems w/ the gun failing to rechamber a cartridge when using storebought reloads, but factory ammo has no problems. The guys at the range I've been to are very helpful and offer great advice to help me improve accuracy but I guess "practice makes perfect". I bought this gun as a conceal and carry self defense weapon and am very satisfied w/ it but find it to be a bit of a challenge to keep it from printing on my shirt. I carry it at 4-5 O'clock in a OWB holster and although it feels very comfortable I am only 160lbs and it's hard to keep it from bulging out of some of the shirts I wear. I've read many posts about different ways to carry a fullsized handgun but am considering a smaller gun for concealed carry. As winter is approaching I'm sure printing won't be as much of a problem but what is everyones thoughts about a fullsize handgun for concealed carry (comfort, easy of draw, printing, etc?). What about a smaller gun for concealed carry, how small is too small (size and calibre)?