... book's handgun section. Now let's s and Lugers. The statistics show l l r 122 0 u a twist rate of one in 12 inches. Standard Remington 513T rifle barrel is used in my .22 pistol. ... shops sell used .22 rimfire barrels at a cheap price. A 3% inch section of barrel is all that is needed for these plans. The. 32 ACP jacketed bulletusually measures.311 - .3 12 inch, which means ... Pistol Design In this volume, I propose to show two different pistol (or handgun) designs which can be manufactured in the home workshop. One of these designs is for a semi-automatic pistol, and...