While each firearm has its preference...
Mine like Standard Pressure 158 gr loadings for POA/POI. LSWC-HP and I often use LSWC . I do not reload Metallic, and being honest, most often use Factory loadings. I have no idea the recipe for the 148gr Wadcutter or 158 gr LSWC are that I still use ( about out) from 20 years ago. [I need to get a buddy of mine to reload some I suppose].
Now ironic as it may be, mine and others like my Mod 64, 3" RB HB do very well with some Win STHP 125 gr +P . These are ~ 20 yrs as well, so the factory may have changed these. Sure do look nice sitting in that cylinder, matches up real handsome with the gun, them hollow points showing...and all.
Somewhere I still have some 38spl Federal 110 gr +P a buddy of mine in Treasury Dept gave me. He used these in a Model 66 snubby [issued weapon] and his personal 3" model 64's for house guns and all.
His 64's shot these a bit better, and he was shooting my gun doing this testing. Just goes to show, each gun has its likes and dislikes.
Being a nice guy I was shooting his issue shotgun and testing loads with it. Does not matter how much you want a issued shotgun, danged old regulations and all...
Mine also do well with S&W 158 gr loads , standard pressure, just a bit more zippy than today's loading.
Fiocchi :
38E ,38 Special 148 gr, Jacketed Hollowpoint 820 fps 225 me Mine really really like, used a lot for a carry load.
http://www.fiocchiusa.com/cat_centerfire.php
I have always liked Standard Pressure loadings. All my CCW in 45ACP, 9mm, and 38spl are loaded with SP loads.
I have always believed in the Semi Wad Cutter as well.
Colt DS and Model 36 are loaded with Standard Pressure , 158 gr, LSWC.