I've used the Winchester Supreme factory ammo in the 30-06 Ultra...the 270 Ultra...the 25-06 Ultra...and the 243 Ultra..and reloaded the Combined technology black bullet for the same with outstanding results...it's usually the first ammo I will buy to use...
Here's my 25-06 group and the first shots fired thru it...
My 243 Ultra barrel...it has shown some real potintial. the first group fired thru it with the factory Winchester Supreme 55 grain varmint load...the next pictures are..4 different powder loads with the 95 grain CT Ballistic Silver tip
My first 30-06 Ultra Comp...and the factory Winchester Supreme 165 grain load...I later sold the whole rifle to Quickdtoo...
Sorry I don't have find any pictures saved for the 270 Ultra Comp...but I'll keep looking
So...the potintial atleast for the lubalux coating Winchester/Nosler puts on the CT bullet works rather well...and I wound recomend trying either the factory offerings...or at least pickup a box of the bullets and try them out...
Mac