Hello DCman and welcome to the forum. Your question is a little short on specifics. When you say 38, do you mean 38 Super or 38 Special?
Since the 38 Super is well know in Colt autos, I'm going to assume you mean 38 Special.
Colt did make an auto called the National Match 38 Mid Range that fired a 38 Special wadcutter round. These guns are of course long since discontinued but can be found. But they are quite pricy in my opinion. The S/N should have a MR suffix and they shoot 38 Special Wadcutter only, not 38 Special RN or HP etc
Since the 38 Super is well know in Colt autos, I'm going to assume you mean 38 Special.
Colt did make an auto called the National Match 38 Mid Range that fired a 38 Special wadcutter round. These guns are of course long since discontinued but can be found. But they are quite pricy in my opinion. The S/N should have a MR suffix and they shoot 38 Special Wadcutter only, not 38 Special RN or HP etc