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Makes sense. I thought your original question odd.Those charts were all defensive rounds and varied quite a bit.
I think I'll just put a handful of them through the chrono and see where I am at.
I've seen no mention of it but powder coating makes quote a difference also. Bullet hardness vs velocity is less of an issue with a good coating. It acts much like a gas check. I've got some coated 12 bhn alloy that I am driving at 1800fps in my .351SL (almost identical ballistics to a .357 carbine) with 4227 and AA 5744 that show nary leading. Slightly oversized to seal the bore from gas leakage seems to be more of more importance. No smoke and much cleaner to load and fire than traditional lubed bullets. A soft alloy flat nosed .358/158 (in my case sized to .352) really makes a jackrabbit do backflips. It's not fair really.In reading your OP, it appears that your main concern is leading and not trying to squeeze out max velocity? Your 950fps loads are exceedingly mild (I'm assuming a standard target bullet ~158gr) and you will likely see 1100 to 1200 fps in your 16" barrel. You shouldn't have any worries about leading until you start running loads that hit ~1500fps in your 6" gun. I cast bullets for most pistol calibers and some rifle. Gas checks become important as you approach 2000fps. In most cases, accuracy suffers before leading is a problem.
I worked up a carry load with those hard wadcutters so those are all kinda gone.I've seen no mention of it but powder coating makes quote a difference also. Bullet hardness vs velocity is less of an issue with a good coating. It acts much like a gas check. I've got some coated 12 bhn alloy that I am driving at 1800fps in my .351SL (almost identical ballistics to a .357 carbine) with 4227 and AA 5744 that show nary leading. Slightly oversized to seal the bore from gas leakage seems to be more of more importance. No smoke and much cleaner to load and fire than traditional lubed bullets. A soft alloy flat nosed .358/158 (in my case sized to .352) really makes a jackrabbit do backflips. It's not fair really.
@Certaindeaf have you tested out those .358 PC projectiles I gave you yet? Wondering if your experience is similar?
I have a bunch more of those wadcutters I don't shoot them as much as the 105 swc and 125 rnfp. Pm me your address and I'll send you a few handfuls.I worked up a carry load with those hard wadcutters so those are all kinda gone.
I sure like the powder coating.. super clean and don't crud up the seater die like tumble lube etc. does.