Are the bore diamiters differant for knite and cva as opposed to T/C ? It seams to me that T/C's are tighter , and that knite's are easyer to load say with a barns sabot . Im talking 50 cal here .

I'M SURE THERE ARE SOME DIFFERENCES. I HAVE A KNIGHT AND I USE THE BARNES/KNIGHT RED HOTS 250gr. THEY SEEM SOMEWHAT EASY TO LOAD, BUT I DO KNOW FOR A FACT THAT THEY SHOOT GREAT FROM MY KNIGHT, AND MY FRIENDS T/C BLACK DIAMOND

Yes, bore diameters differ from manufacture to manufacture. In the muzzlelaoder industry there is nothing like SAAMI to govern and set standards for the industry. In the world of centerfires, were SAAMI has set industry standards, you can count on the bore diameter of your .300 Win mag, 30.06, or .308 Win, being .308 diamter; Your .223 Rem, 22-250 Rem, and 220 Swift being .224 bore dia; and your 7mm-08, 280 Rem. and 7mm Rem Mag, being .284 bore dia.

What loads easy in a Knight, may load hard in a CVA, yet even easier in Traditions, but be a real pain rear to load in a T/C.

As 1SHOT_1KILL said, there is no set standard. That's why what works in one rifle might not work at all in another. This is even true in the same brands although that might now be caused by barrel differences. All muzzleloaders have a sweet load as it is called and it must be "found" because no one can tell you what it is. They might be able to put you in the ball park and even get you right on the money, but you still need to try different projectiles and charges until you find the one you like that shoots great for you. I am learning this with my new Black Diamond. It likes T/C brand projectiles so far real well.

cayugad thanks for the reply , im looking for a good load for my omega , and just purchased some t/c shockwaves 250 grains and am going to try 100 grains of pyrodex or 777 behind it .

you might want to try .45 caliber 300 grain Hornady XTP or SST that are .452 diam and put them in the black Harvester High Pressure sabots. The XTP are hollow point and the SST are pointed poly tip. They are reasonable in price, you can get them at Wal Mart and on top of a 100 grains of Pyrodex you might be surprised. Start them out with 80 grains and work your way up. Off a good rest you might get a real tight group. Hope the gun works out good. Shockwaves and Cheapshots also shoot good.

they differ slightly

i have a T/C hawken flinter .50....the top of the lands are .500th of an inch....the bottom of the grooves are .512th of an inch....so that makes the rifle grooves .006th deep....i called T/C to find out what the spec's were of my gun so i know what dia bullets to try....you can call yours also to find out for sure..................bob

All of the allowable specs and tolerances from even ONE manufacturer (except for perhaps Savage and White) would be scary. Bore diameters must be determined for each individual rifle even from the same model and manufacturer (and then it may vary as you go down the bore).

I've got one Encore .45 that will engrave a copper coated PowerBelt on loading and another that would let the same bullet drop like a rock (were it not for the plastic base).