I tested a series of loads ranging from 20 to 26 grains of 4198 using the RCBS 200 grain boolit cast from AC COWWs and some tin and lubed with BLL. These weighed in at 213 grains, so they are on the heavy side for caliber. At 26 grains I had very god 50 yard results, as good or better than the factory jacketed loads I have been using. Lyman suggests that 26.5 grains gives 17XX FPS, but they use a 24 inch test barrel and my Marlin is a carbine with (if memory serves) a 16" barrel, so I imagine I am losing some speed vs. their tests. I don't own a chronometer, so no idea of actual speed. Hodgdon lists charges for 220 grain jacketed fodder up to 29 grains. Can I keep upping my charges and see how fast I can go before I start losing accuracy? I'd guess that 26 grains gives me 1600 or so FPS, maybe a touch more since I am at altitude. Is this enough for a 100 yard hunting load for deer and maybe hogs?