Hey Jerry have you tried the 165gr Corlock at 1290? If so how does it stand up against the 158 jsp?
No, I haven't tried them out. I'm so fond of the 158g Remington SP mainly because it gives about all the performance you can possibly squeeze out of the 357 magnum, when going against game in the 75-150 pound range. It balances expansion, and penetration amazingly well, giving full penetration on broadside shoulder shot deer, and mushrooms just enough to blow a very generous hole in the vitals to boot. It'll do this consistantly in a revolver out to 50+ yards, and in a rifle out to 100 yards.
I've killed deer with 158g XTP-HPs, 158g XTP-FPs, 140g XTP-HPs, 158g Rem. HPs, 140g Rem. HPs, 125g Rem. SPs, 180g Rem. HPs, 150g Nosler SPs, 158g Sierra JHC, 158g Sierra SP, 170g Sierra JHC, and a few cast bullet loads. I'm sure I left out a couple, but I meerly am trying to give you an idea of what I'm comparing the 158g Rem. SPs against. I've only killed 7 deer with my Blackhawk, but there have been many more that have hit the dirt due to my 1894C, as well as the 1894C I had before I bought this one. When I say I've thoroughly tested the 357 magnum round against deer, I mean I've "really" wrung it out. Most of the bullets I've tried have killed multiple deer for me, before I decided they didn't quite make the grade. For what it's worth though, not a single deer that was killed with any of those bullets got away that I can remember. Some took a while to track, or took a finishing shot, but most were pretty clean quick kills. I just know that it takes more than a single DRT kill to judge a given bullet by.
The 357 magnum, when used within its limits, from either a rifle or revolver is a perfectly suitable caliber for just about anything up to deer sized, but it does it's best work if you'll take the time to use the right bullet at the right velocity within the right range limits.