Originally Posted by steve4102
Barrel length affects a lot of things, things like velocity, muzzle lift, sight picture, etc., but accuracy is not usually one of them. A quality barrel is a quality barrel short or long and a POS barrel is a POS short or long.
Here is a little test on barrel length, Velocity and Accuracy in 223. As you can see even the shortest barrel was still very accurate. Note even cut to 10 Inches the rifle was still shooting .6 MOA.http://www.accuratereloading.com/223sb.html
First off,Jon did a good job of explaining things.
Now the weapon that the OP is wanting to be a "Tack Driver" is this-
Not exactly the most precision made weapon in the world,and definitely not a "tack driving" quality 223.
It is very fun to shoot,and beyond the word LOUD,ear protection is a must have with these guns.
Shooting mine with a bipod on a bench with rear bag,I only have a few loads that will shoot close to 1 moa,most are in the 1.5-2 moa range off a bench.