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Old 04-09-2011, 12:10   #13
fredj338
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Quote:
Originally Posted by greenlion View Post
The Gen 4 GLOCKS seem to have fixed the light mounting problems with their stiffer recoil spring, so that will not be a problem in the future.

I like the technical info on sectional density Fred, but there is no such thing as a 105gr .357 sig doing 1600fps in the real world for us to purchase as far as I know.

The ft/lbs are not that far apart even given the seemingly wide difference in number you give for velocity according to sectional density.

125gr .357 = 584 ft/lbs
135gr .40 = 567 ft/lbs
Well the technical info is how you compare bullets/calibers, not just vel & energy. There are actually frangible practice rounds that are 100gr, but you can get a 115grJHP @ 1500fps+, will still do a bit better than a 135gr/40 in penetration, all things being equal. FWIW, energy in pistol rounds is pretty meaningless, especially 50ft# either way. You could certainly handload a 90grDPX (Barnes) to easily hit 1600fps & the monometal would be devastating to any animate target.
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Last edited by fredj338; 04-09-2011 at 12:19..
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