You guys are fantastic and I apprec all ur knowledge and info!
Got kentucky -Perdersoli mfg- from cabellas - 50 cal. I think cabellas handbk in general calls for max of 80 gr pyro RS for .490 RB. I've been shooting 70 gr P (pistol) pyro - I know I shouldnt. However, u guys indicate capable of much higher loads, 100 -120gr RS etc
Does cabells and manufactures under-rate loads for lawsuits etc and we therefore actually can shoot larger loads than specs?

what is max load for pyro P and pyro RS w .490 roundball.
Would RB shoot significantly farther (at least 150 yds) with RS vs P even by increasing loads proportionately? THANKS!

That seems very light. 80 grains of a 2f powder, granted would have all the power you need for deer hunting, but I personally feel they are able to take much more then that. Most of the .50 calibers are rated to 110 grains of 2f and 100 grains of the 3f powders. BUT I will tell you to stick to the manufacturer's recommendations.

The legal considerations might have something to do with their powder recommendations. It might also have something to do with the shape of the stock and the fact it is a full stock. So they might be suggesting this lower charge to reduce any stress that might possibly be produced on the stock. A friend of mine shoots a Tradition's Kentucky .50 caliber and he always shoots 90 grains of Pyrodex RS and a patched roundball. Whether that helps you or not... Good luck with your rifle.

110 grain FFG or 105 FFFg for the traditions kentucky.