That’s a simple 45 caliber colt. The long barrel makes it kick less since more powder has time to burn before the lead leaves the barrel and the extra weight of the barrel adds more mass to the weapon. The longer barrel also makes it more accurate since the sight radius (the distance between the front and rear sight) is longer. A weapon with a 2 inch barrel and a 12 inch barrel are equally accurate. The human firing them is the weakness. It’s easier to keep the weapon on target if you have a long sight radius. The bullets aren’t blanks, they’re wadcutters. Wadcutter ammunition is a flat front bullet that fits entirely within the brass. It’s mainly used for target shooting since it cuts a clean hole in a piece of paper.