My friend took his new CVA hunterbolt out and shot it side by side with my new Omega. No difference in accuracy between the 2 guns. (his $139, mine $400). The biggest advantage of the Omega that I see is the waterproofness of the primer and I didn't have a bolt to clean.

Is the CVA optima breakopen action supposed to have a waterproof breech too? If it does, it should be a good choice. However, the T/C warranty/service seem to be really good too, and that is worth a lot if something goes wrong. Don't think you could go too wrong with either gun. I have heard good things about the black diamond too.

Can't help you much with the 45 cal vs. 50 cal debate. Don't think it really matters too much for deer sized animals, either will be accurate and both have MORE than enough killing power and range. However, if you think you may ever hunt elk sized critters, I would recommend getting the 50. In some states that is the smallest caliber they allow for elk. And regardless of the fact that you can find charts that say that the 45 cal has more foot lbs of energy, you have to remember that big slow bullets don't show well with ft lbs calculations. To compare "killing power" of black powder rifles check out this link about the "Taylor" Index: http://www.loadammo.com/Topics/July02.htm

I like loose powder best because it is cheaper, legal in every state, and you can customize a load to your gun. For instance, your new gun may not shoot 100 grains well, but it might shoot 85, 90, or 105gr much more accurately. Research some of the older threads about working up a load.

Just a suggestion to think about. Even if it is legal to use a scope in your area, consider not using one, at least for the first year. This limits your shots to about 100 yards. You will enjoy it as the primative weapon it was designed after. It will make you a better hunter.

Good hunting and welcome to the great world of blackpowder hunting!