The biggest reason one did better than the other is probably:
Quote:
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The 9mm shells use 64gr. of #11 birdshot in a plastic rounded capsule. The .45ACP loads are an aluminum extended length shell with plastic cap containing 117 gr. of #9 shot.
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If you load the .45 with #11 birdshot you're going to get similar results to the 9mm and vice versa. I'd like to see a test with both using the same size shot.
Also, I won't be using 9mm shot shells with #11 birdshot for anything.
