I'm going to load some 158 gr tonight using HS-6.
I have used lots of +P loads with HS-6 in my Model 66, among other Smiths, so the L-Frame can definitely handle it. Make sure you use magnum primers with the HS-6. I have found loads with regular primers to be wanting in consistency and accuracy; as well as prone to leaving lots of unburned powder in the barrel and on the bench in front of the gun.
One small problem.
If you use .38spl extensively you can get a ring in the chambers that can make chambering .357 difficult. Not a huge issue but worthy of mention.
Cheers.
A 158 grain +P load is one of my favourites in my S&W 686, a real paper killer!
I read about this on another forum and apparently it's and "old wives' tale." Sorta like how you can't shoot slugs or steel shot through a full choke on a shotgun.
I'm going to be using 6.5 gr of HS-6. According to the Hornady book, that with a 158 gr bullet it is a +P load in .38 Special.
Yeah, that's the load I use. In fact, I think mine is closer to 7 grains.
I could probably get away with more than 6.5 grains of HS-6 considering I'm firing them in a .357 magnum revolver. Since I'm new to reloading for handgun and this will be my first time doing +P loads, I think I'll just stick with the book data for now.
If you also have a .38 Special revolver around, it would be worthwhile to clearly label those loads as +P pressure levels. If that .38 Special revolver is rated to handle +P loads, your still good...



























