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.
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Knight Disc Elite .45 caliber
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Knight KP1 .50 caliber
Those are 100 yard groups and are both the first conicals tried in either rifle.