I have shot a few critters with my .50-70 loaded with black powder to a whopping 1200 fps. The boolits were cast of 20:1 and were a semi-pointed design. The longest shot was an antelope at 190 yards and the closest was a whitetail buck at 20 yards. Every one dropped very quickly and in sight.
The only exception was my buffalo which required more than one shot. I was told to shoot him in the neck and there is a lot of neck on a buffalo than isn't really going to put them on the ground when hit. After knocking him down and having him get back up I said the heck with this and put one just behind his ear, that worked well and the skull was just fine. The .50-70 is not a .300 magnum and kills differently, they didn't seem to understand that.
I had to move away from the Sharps single shot to something more fitting for the scope that my eye now require. I miss hunting with my .50 Sharps, but I like my leverguns too.
I enjoy the whole process of hunting with cast boolits and don't care to use jacketed anymore. I enjoy casting and developing a boolit/load that works well and kills cleanly. The only one that was given me cause for concern is that one buck I shot with the WFN in my .45-70. I probably worry about that one incident more than I need to. I continue to feel that some expansion is a good thing. The .35 Remington gives me an ideal opportunity to test that idea. It can easily be loaded to a velocity that should give reliable expansion out 150 yards and a bit beyond. A .35 caliber 200 grain boolit at 1800 to 2000 fps has very manageable recoil and is perfect for deer at the woods ranges common where I hunt.
I do appreciate all the input you guys have given me. I've got plenty of time until deer season to work with this cartridge and give it a thorough testing to make sure I'm ready this fall.
Any specific details on loads, alloy, fps, and deer (hogs) killed with the .35 Rem. and cast boolits will be equally appreciated.