I love shooting my cap and ball guns. I own 3 rifles, a CVA Plainsman I bought off gunbroker, a Cabela's Hawken Hunter Carbine which I bought off...uh...well, CABELAS...duh, and a CVA Wolf inline I got from Gander mountain on sale for 180 bucks. The Plainsman is a fun gun I bought for 80 dollars used. It has a 1:48 twist which is a compromise to stabilize patched round ball or light weight Minie balls. The Hawken Hunter Carbine is a Hawken modified with modernistic things such as a recoil pad, real adjustable sights, and such. It shoots well with heavy 385 grain Hornady Great Plains Minie balls. The HHC has a very fast 1:24 rifling, so forget anything, but heavy Minies in it.
For hunting OR shooting, I prefer the CVA Wolf. I have a scope on it and it shoots 2 MOA at 100 yards. The Cabela's HHC can shoot that well only with a 385 grain Minie and Pyrodex. I've never shot FFG in it, can't get it without ordering the stuff and paying 3 times in hazmat fees than the cost of the powder. So, last black powder I've bought was in about 1975 when you could buy the stuff right off the shelf at the gun shop. Ah, the good ol' days. With sidelocks like the Hawken, only real black powder will ignite easily. I installed a special attachment on the HHC, a converter which uses small rifle magnum primers to replace the number 11 percussion caps. THAT works really well, but those conversions are no longer availible. The Wolf is an inline whose breech plug accepts a shotgun 209 primer. It works very well. I have a nipple on the CVA plainsman and it's a pain, but it's mostly a wall hanger as I don't really enjoy the ill fitting stock and consequent felt recoil of that thing.
I shoot 777 3f in the Wolf. I shoot about 90 grains of it and I get 1700 fps. 777 is more energetic than any other substitute or real black. Killer stuff. It still needs clean up just like black powder or Pyrodex. I don't have the breech plug for the Blackhorn 209 substitute that came out some years back. That stuff is supposed to be non-corrosive and quite clean shooting, but it takes a blow torch to set the stuff off. It can only be fired in inlines using 209 primers and even so, takes a special breech plug in the Wolf. That breech plug is available, but I haven't bothered. I ain't skirt of cleaning my guns and I like the way 777 performs in that gun, really makes some power, near 3000 ft lbs. That's pretty much overkill on our deer. Would be useful for a moose or grizzly I suppose.
There's a lot to know with front stuffers. You HAVE to get out and shoot 'em, play with projectiles and powders if you aren't stuck on black powder and CAN get it. I can get it if I drive 150 miles, or I'm told there's a couple of shops on the west side of San Antonio that has it. I may order a bunch sometime, but I'll never shoot up a large quantity. I'd told to make a big order with friends and split the hazmat fee. That'd work if I had any friends, I guess.

I don't know ANYone around here that shoots BP. So, I just shoot the subs. I have recipes that work.

Pyrodex smells and looks just like BP. It's a bit sluggish to ignite, but not in inlines. So, if you're not going to shoot black powder, I'd HIGHLY recommend a 209 inline. Yeah, it's not authentic 1400AD, but ya know, it at least WORKS and works well. Do you wanna sit around and dream you're Cabesa De La Vaca exploring the new world, or do you wanna SHOOT the danged thing and hit what you aimed at? It's far easier to live with a 209 inline than a sidelock, trust me, at least if you're denied the use of real Black Powder. Even if you shoot black, it's a lot easier to pull that breech plug and swab that bore. Be aware, too, that you'll need to clean the bore every couple of shots with a brush and water to get the fouling out if you want to maintain decent accuracy. Yeah, they're messy, they're a pain in the butt, you can't rattle off 30 rounds bump shooting, but they have their own qualities. During the ammo shortage when I couldn't get .22LR, I could still get caps, Pyrodex, and cast my round ball to shoot my revolvers. But, revolvers is another story.
