The price is right and I hunt in pretty tight quarters so it should work out well. I want to try my hand at putting another kit together anyway. The first time I put one together was putting together the Hawkins in the picture in the post "I told you I was bored."
I slapped that one together in a hurry and wasn't too worried about looks. I just wanted something to hunt with.

I have a T/C White Mountain Carbine, .54 caliber, with a 1 in 48" twist. It has a 21" barrel, and with a PRB, ( .530" ball, .018" pillow ticking patch) and 80 to 90 grains FFG, it shoots quite well. How much more powder do you need ? Have taken several deer with it.

I have 2 Lyman 54 cal with 24 inch barrels. They both shoot good with conical and round ball. I also use 54 cal powerbelts I get great groups with these I use 75 to 80 grn of goex. I use t 7 in the percussion good power and accuracy.

Now gentlemen, I never said the rifle would not shoot PRBs or conicals. Both will shoot satisfactory with the right bullet/powder/charge combo. I was merely saying that the 1:48 is not the OPTIMIM twist rate for either.
I shot a 1:48 for years in PA when only PRBs were the legal projectile. And when conicals were allowed, the transfer required just a bit of load tweeking.
But for a short range woods rifle I said it would be dynamite.

Traditions took the .54 cal. kit off the specials page. That stinks.