I have to make a correction to what I said earlier. I found the factory tag from a Knight Bighorn I purchased a few years back and that tag did correctly state the twist rate on that rifle and yes it was printed from the factory. What a bummer that this rifle was not correctly labeled.

The Super DISC .45s were all based on the DISC Original design which used the Orange Primer DISCs and had the stock with a lot of drop at the recoil pad. I was doubtful when I saw the gun for the first time that is was indeed a 1:20. You did get a very nice stock.

I will double check my Original 45 when i get home tonite. It was NIB with everything and i kept it all.

is the gun up for sale and $

I know this is a rookie question but what's the advantage on the 1/20. Obviously a quicker spin, so what does this accomplish?

What can the 1/20 do that a 1/30 can't?

The faster spin stabilizes longer bullets. Each spin has a certain length range of bullets it can stabilize.

and the 1-20 twist can bring more $

I had planned on trying some long range shooting . I have some 45 cal 460 gr, some cast 538 gr conicals, 540 gr paper patch, some 40 cal 250 gr dead center sabot and a couple other bullets I wanted to try to work with and I believe the 1:20 twist is the answer. The 1:30 won't stabilize the 538 or 540 for sure. Possibly the 460 it would.Oh I forgot Parker has a new 325 gr match hnter that I think would be really accurate in a 1:20

Exactly. I only paid as much as I did because it was suppose to be a 1:20. you can get a 1:30 a lot cheaper

I hate to hear that man, I hope the seller makes it right.