Depends on personal needs I guess
This is how I practice with my .38 "snubby":
B-27 silouhette target
7 yds. distance
20 rounds per target
I use the standard scoring system listed for the B-27 target: 5 points for 8, 9, 10, and X rings; 4 points for 7 ring; 3 points for anything else on the silouhette. Maximum score possible is 100.
I try to keep the shots repetitive, allowing no more time between shots than it takes me to bring my gun level from recoil and place my front sight in line with the target (maximum 1 to 1.5 seconds).
I just went out to the local range yesterday, scoring a 94 on my first drill and a 99 on my second drill.
I received many compliments from people there, younger and older alike, including a US Marines Sgt. and a US Army Lt.
I guess according to their standards I'm a good shot, but I'm curious to try a defensive pistol range (if I can find one locally) that allows more realistic scenarios, and see how I really hold out there.
Sincerely,
Matthew Webb
Franklintown, PA