Good point jimbob, I didn't take into account surface area. I was focused on velocity and mass, but I see why now.
And the reason I didn't think 200fps is that much difference is because my nephews paintball gun is 300fps and it's not exactly deadly, so I had it in my mind that 300fps isn't very fast. I forgot how much a paintball gun can hurt though.
I'm not arguing that a roundnose should have a higher coefficient than a hollowpoint, but in Hornady's manual, the 9mm with the higher coefficient is a 125gr HAP round, at .158 whereas the FMJ roundnose has a coefficient listed at .141 for a 124gr bullet.
Any thoughts? I'm assuming it's from what I mentioned early.
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because the concentricity of the bullet has a far greater effect at the tip than it does in the middle, and it's rather difficult to make a perfect tip
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