In talking to someone who loaded some 500 S&W rounds with a higher burn rate powder in small volumes, he noted that sometimes he'd get a heckuva recoil out of the gun. From my recent reading up on reloading (I'm a newb), this makes sense because of the inconsistent ignition and possibility of the whole volume of powder igniting at once and causing a high pressure spike.
I'd like to discover or develop some low-power loads for the 500 so I can get in lots of range practice prior to working my way up to being able to shoot hot loads with a high-degree of control and quicker second shots. In the 2007 Hodgdon Reloading 'Annual Manual', there's an article on Trail Boss powder (low density/high volume flake powder either for BP replacement in classic cartridges or for plinking loads in new but high-volume cases.) I thought, "Perfect! Light loads that solve the volume issue!" In this article, Charles Petty gives 2 loads for a 500 S&W using lead bullets:
325-gr LFP, 18.0 gn Trail Boss, 1157 fps
370-gr LFPGC, 16.0 gn Trail Boss, 1061 fps
I got a good deal on some 335-gn FMJ-FP Rainier Bullets 'LeadSafe' bullets that are primarily a lead bullet with a (who knows how heavy) copper jacket. Got them for less than half price. I expect that the copper jackets, having higher friction, will likely develop higher chamber pressures ...I can reduce the Trail Boss loads above by 10% and go for it, but on the other hand, these are light loads and the risk of exceeding chamber pressure limits is probably near nil. Another approach is to load exactly as described above, say use the 370-gr load for the 335-gr Rainier Bullets bullets and shoot them through a chrony and see what I get ...then adjust up or down to get between 1000 and 1150 fps. I think at these light loads, which also take up a lot of the case capacity and therefore should have a consistent burn, that there isn't much danger in this approach ...no?
...OR, I could just go find a lighter load that uses Titegroup and call it good. Hmmmm..... I wonder as I wander ...
Comments? Ideas? Concerns?