


can't please them all..
First thing I would do is get the bore butter out of them rifles. I suspect that is why the one rusted on you. Whether the rust will effect the accuracy of the rifle, only the range will determine.
Your Firehawk has a 1-38 twist according to my chart. So I would
GUESS that it will shoot conicals and sabots. I would get some maxiball and some 300 grain Hornady XTPs. Start with 80 grains of loose powder and start shooting groups. See what happens.
The Bobcat has a 1-48 twist and I know they shoot roundball well and also they do a good job on powerbelts sometimes. I would start with 80 grains of loose Pyrodex RS and some patch and ball loads and see how they do. My CVA Stalker which is a Bobcat sold by Bass Pro is real accurate with 80 grains of powder and a patch and ball. And it will plant deer just fine.
I would clean all the bore butter out of them rifles. Then use a good quality gun oil if you want to protect the bore. And as for shooting, before you shoot, swab the bore with Windex or isopropyl alcohol and then some dry patches to take the oil out of the bore. Then pop a few #11 caps through it. This will carbon the chamber and make things shoot good. You might want to try some 250 grain Shockwaves also if you can find them in a store...
Good luck and keep us posted..