The advice you have been given is good. I'll add that you may want to try 250-260gr bullets for the .45 Colt. This may help in getting closer to point of aim with fixed sight revolvers.
I like 260gr cast SWC in mine. Got my last batch of bullets from Missouri Bullet Co. They put out a great product at a very reasonable cost.
Proud member of the NRA and Texas State Rifle Association. Registered and active voter.