Revisiting this thread, I have learned from
The Gun Zone .223 vs 5.56 FAQ that there is indeed a difference in the Leade before the rifling starts.
Now, my question is how do you tell the Leade of a rifle. Do you chamber a cartridge and look for rifling marks on the bullet? Is there a special gauge? Can you look in and see?
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In a few years when the dust finally clears and people start counting their change there is a pretty good chance that President Obama may become known as The Great
Absquatulator. You heard it first here on TFL.