No such thing as a dumb question. ..... Lets just hope this isn't a dumb answer ;D On the Ackely Improved cases designed by P.O. himself, the measurement from base to shoulder/neck junction remains the same. This allows parent case cartridges to be readily fired in the improved chamber.........So the parent cartridge is actually headspacing on the small rounded transition from the neck to the shoulder. Beware of so-called A.I. cartridges that don't share this design feature. Using a properly reamed chamber (head spaced correctly) you should feel a slight resistance to bolt closing as compared to an empty chamber when using factory parent case ammo.... Could the fit be slightly loose?------ YES. All factory ammo is not created the same dimensionaly. However, I've used this method in both of my AI's with no problems. Keep in mind that a portion of pressure needed to form the case will also be absorbed by the case upon fire forming. Expect lower velocities when fire forming. Hope this helps. If this was a dumb answer we'll hear about it ;D
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