My elk load is 95 gr of BH 209 and the 350 gr FPB. Has killed and elk the last two years.

That said, depending on what you are hunting, any load from 80 to 110 gr of BH that is accurate would be plenty of power for anything up to big deer. I set my lower limit on elk at 90 gr of powder. Don't buy into the hype that you have to use 150 gr. Just costs more money and more bruising on your shoulder.

And the 300 gr FPBs should be great for deer.

The FPB is larger than bore diameter by design in the rear, so you have to size it to your barrel. To do that, you need a short starter with a Hornady (or similar) loading tip. Set the bullet straight down in the barrel, set the starter on top and give it a good wack with your free palm to start the bullet in the riflings. I then have a ramrod with a retractable "T" handle to send it on down to the powder. I then lean on it to seat it with some force on the powder. You need to have a tight seal for BH to work well.

You weren't very specific on what you wanted to know, so hopefully this helps.