Whether the extra barrel length will improve your accuracy might get some real debate from some of the 22" barrel owners out there. I have a Knight Wolverine II with a 22" barrel that is super accurate. White made a G series rifle and some of the accuracy reports off them would be hard to beat too. Granted the longer 29" (I think it is) barrelwill give you a longer sight plane, and it will allow more of the powder in the rifle to ignite which could add additional velocity to the projectile which might make it shoot flatter, but the real accuracy will be up to you.

If you get a rifle with a good charge, a good accurate projectile and practice with it, the rest is just a matter of keeping your nerve when that monster buck walks out across the rifled.

I am sure the Optima Pro is a fine rifle. Enough people own them and shoot them. I do think there are better rifles out there on the market, but you might end up paying a lot more for them also... If you like the Optima then by all means, buy what you like. I don't think it will let you down.