Hi Guys,
Besides the rifle, which is a .54 GPR, what else do I need to get going? I am a experienced shooter. I'm 36 and have been shooting since I was 10. I have no experience with BP and would like to have a good starter kit set up. I have a bag and a horn on the way. I know it is a basic question that is open ended, I plan on hunting and doing range shooting. I plan on real bp. Thanks!
You are going to love shooting your black powder rifle. I've been taking deer with mine since 1984. I am going to differ a little from the advice you have gotten so far.
Don't get too much stuff too soon. Get the basic items you need to shoot the rifle. Then start going to shoots and rendezvous and see what others are doing and using. Most shooters are happy to show their gear. This will help you avoid purchasing items you won't be happy with latter.
You have a bag and a horn on the way. I think you now need;
An adjustable powder measure.
A short starter.
Cleaning jag, patch worm, and ball puller to fit your rifle and ramrod.
Cleaning patches, commercial cleaning solution (or hot water) and gun oil.
Caps, powder, round balls, and patches.
Pre-cut, pre-lubed patches are an easy way to begin. After you shoot a bit you can decide if you want to cut pillow ticking and use spit lube or any of several other options for patch and lube.
There are other items you will find useful / necessary but the above short list will get you shooting the rifle.
I shoot 3-f Goex in my 50 cal rifles because it will also work in my pistols. However, I believe I would try 2-f first in the 54 caliber.
By the way, I love my GPR. You did well getting such a good rifle.
Good luck.