DWBs is a forum for "Dirty White Boys". Mostly White Rifle owners and shooters and mostly nutz!
I would recommend you get an an Accurate Mold -
http://www.accuratemolds.com/bullet_...=51-460M-D.png
That happens to be an EXACT copy of a mold I designed and it does well from 1:28 twist barrels. I would ask for it to drop them in pure lead at .505" diameter and get a Lee .501 sizer die. Bullshop still sells some terrific lube so far as I know so I would have to recommend his unless you have another lube you are sure will work well. I would lube, then size to just a hair over bore diameter - perhaps .0005" over but no more than .001" over. Hone the sizer die as needed to get that size. Objective is to wind up with a bullet that starts easily but still engraves the rifling a bit. Combine that bullet with a WAD-510A from TOTW, about 80 grains of good powder and you should be in business.
The .505" diameter is based upon your barrel being a bit large on the land-land measure, if it's tighter you could request something nearer to your bore but I would still keep it dropping them a bit larger than you want the final product. Swiss 3 works great but probably so would most any other quality black. Blackhorn 209 would be about the only powder I would avoid entirely for use with conicals.
Purest lead you can find.
I just want to add that the "slip-fit" system as described above and advocated by Doc White works great in most Knight rifles.
Knight Disc Elite .45 caliber
Knight KP1 .50 caliber
Those are 100 yard groups and are both the first conicals tried in either rifle.