It's been a while since we posted on this topic (last Dec.) and I just re-read it. Mention of a ball starter: I made one for myself out of some 3/8" doweling, and a chunk of antler. Short stub to start the ball, a 5" rod to seat it. The other end of the thing has a drilled hole to fit the ramrod, so that I can slide the PRB down with a good solid grip. I have the original black wooden ramrod, and bought a T/C metal one. Plus I made a range rod with a hardwood T-handle out of a length of fiberglass rod. Wound that with vinyl tape to protect the bore from abrasion by fiberglass, and put on a threaded ferrule made of a .357 mag. case with the primer pocket drilled and tapped to fit the T/C jag-seater. An adjustable powder measure was another inexpensive accessory, although I mostly just use an old .45-70 case as a measure. I like the Wonderlube patches for the RB, something in me says: "Don't spit on your ammo!" I've used both CCI and Remington caps, both work well for me.
I still love my Grey Hawk...so easy to clean, no corrosion worries, and mine at least is scary accurate. I haven't hunted with it...almost did during our Maine BP season, but my arthritic bones wouldn't let me.
I've been giving some thought to painting my boring black Rynite stock...maybe in snow camo. Would be useful up here in the snowbelt for more months of the year than green-tan-brown all-purpose.
The Grey Hawk has kind of a sharp narrow trigger. Feels lighter and smoother if you press it near the end, but the point is uncomfortable. I cut a half-inch piece of neoprene tubing and slipped it on. Instant trigger shoe (more like a trigger sandal, really!)