Many years ago I reloaded and experimented a lot more than now. I mainly carried a old .357 trooper at work. Off the job I shot my .357 S&Ws a lot too. I noticed sloppy reloaded cases wouldnt go in my colts would usualy go in the smiths. Yet high primers wouldnt function in the smiths but the colt would.
If I shot braced over the bench with pads etc., I still claim my colts to be a little more accurate. I am big with fair size hands. Yet if factory standard grips are used on both makes, the S&Ws always "feel" better.
With most my shooting I shoot SA, only when qualifying would I shoot DA. In that case, shooting SA, it doesnt matter whether, S&W or colt, I doubt if there is a differance.
I like both brands, yet must admit colt is almost defunct in DA revolvers, but with two pythons and a couple troopers I am set for life, as I am with my fourteen or so smiths.