If you do a search back a week of so, you'll sse that I've answered all your questions for another noobie beginning in BP shooting, albeit with a revolver. The first thing to do is to get the Lyman Black Powder handbook, and the second thing is to get over to our range on sunday morning, or to another range where BP is shot.
You WON'T need phials for the gun that you are going to shoot, but you WILL need suitable size patches and ball to fit. Undersized by about 20thou - the patch makes up the difference. However, you'll have to try various sizes out to see, hence going to where others also shoot BP.
And what have you got? A smoothbore, or a rifle? Even the advert gets them confungled - so which is it?
Assuming that what you have really IS a smoothie - here is a pretty average load for one with a slightly longer barrel than yours, culled from www.muzzleloadingforum.com - there are a few Brits there, too, including David Minshall from the MLAGB and Robin Hewitt.
'As one reference, my .54cal smoothbore PRB load which keep balls on a 3" aim point sticker at 50yds is:
.54cal x 33" GM [Flint] smoothbore
90grns Goex 3F
.022" patch
Hornady .520"
Remington #11 percussion caps? Don't get anything else.
Adjustable brass powder measure and a set of scales?
Black Powder? Please, NO subs in a big bore gun like yours.
You'll need FFFg - FFg at a pinch, but FFFg is better.
Spit-lube patch lubricant, unless you are happy to keep a patch in your mouth while you reload....spit is waaaay cheaper than Spit-Patch, for sure.
Please note that shooting BP requires a totally NEW approach to basic firearms safety, too, that's why the NRA runs BP RCO courses. It is NOT intuitive, and needs some serious thinking about.
Now go search the forum on this thread for my last set of answers....and then come back.
tac