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User
Join Date: Jun 2002
Location: Rio Rancho, New Mexico
Posts: 4,583
Thanks: 958
Thanked 971 Times in 277 Posts
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GT has said much depends on the diameter of the whole in the mag bottom. A larger whole allows the column of coiled spring to deflect sideways a bit and make it a little shorter when fully compress allowing for one more round! Or at least, that is the way I remember it! Could be wrong.
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