sleepygator said:
bozo699 said:
I dissagree with XTR the AI is a great way to go IMO especially on a tapered .308 case, You will have no problems reaching 1K with it, nothing special is required in fireforming any of the AI's just load and shoot and all of mine are very accurate just fireforming, I think you will be happy.
Wayne.
Wayne,
The .308 and 7-'08 cases have only .016" body taper. The Ackley version cannot add much at all to that. The only substantive difference is the shoulder angle. However, that may add some powder capacity and eliminate the one problem with the .308 family: case lengthening.
Steve,
I am aware of that, I have several AI's, What I like about them the most is the case life that is added by the straighter wall and 40* shoulder, I don't try to squeeze the last drop of velocity from a case like many people do, for instance I have a 6mmAI that I run 39.0 grains of IMR-3031 and 65 grain v-max bullets to fire form, it will soot in the high two to mid threes fireforming and I continue to shoot the mild load of 39.0 grains of the same powder and bullet in my newly formed AI case,..Why,....because it shoots in the ones and cases will last for almost ever, the one hundred cases I have formed is going to outlast the barrel by a long shot as a matter of a fact I am sure they will be able to wear another barrel out, I could make it go at least another 200 or even 300fps faster, but why at 3500fps + the ground hog out to the 500 yards that the 1:14 is really good for never know the difference in the speed, he is just as dead. If I really wanted speed and case life I guess I could blow the shoulder out on a .378 weatherby case to a 35 or 40* angle and neck it down to .177and turn out some 50 or 75 grain bullets for it, the BC would be phenomenal and I can't even imagine what the velocity would be but ALOTTTTTTTTTTT comes to mind. But back to the topic I personally think a improved case like the Ackley is always a good thing as the cases just don't stretch much, especially if you don't try hot rodding them to the max!
Wayne.