I find that familiarity with any firearm helps but especially with a pistol. My pistol is for self-defense if needed or if I might happen to run low on ammo for my long gun, till I can get more ammo. Pistols are like any other firearm they need to fit you properly, be held properly and aimed properly. I shoot with both eyes open and practice with a brock string to keep my eyes working correctly for my pistol, rifles and shotguns. I also believe in dry practice (no ammo any place close to where I am practicing). A friend of mine Mike said that after he retired from the SEALS he didn't pick up a pistol for 10 years but that when he did it came back pretty fast, but he did need to work at some of the things he had lost with time. Muscle memory is one of the things that will degrade with the passage of time not doing something.