closest gr approximation .357 Sig vs 40 S&W

This is a discussion on closest gr approximation .357 Sig vs 40 S&W within the Defensive Ammunition & Ballistics forums, part of the Defensive Carry Discussions category; I have had a 40 S&W barrel for my .357 Sig Glock for a while. It is a nice option. Just wondering if anyone knows ...

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Thread: closest gr approximation .357 Sig vs 40 S&W

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    VIP Member Array Thanis's Avatar
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    closest gr approximation .357 Sig vs 40 S&W

    I have had a 40 S&W barrel for my .357 Sig Glock for a while. It is a nice option.

    Just wondering if anyone knows what gr 40 &W would best approximate a .357 125 GR .357 Sig for target at 25ft?
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    At 25 ft, I don't think it would make much difference. Trial & error.
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    VIP Member Array Thanis's Avatar
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    Quote Originally Posted by OldVet View Post
    At 25 ft, I don't think it would make much difference. Trial & error.
    I agree, just wondering if there was some other thoughs on the topic. In addition, wondered if the gr mattered much (say 165 gr vs 180 gr) vs recoil.

    In addition, how about 50ft.
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    Distinguished Member Array AutoFan's Avatar
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    Don't know if they still make it, but Cor-bon used to make a 135 grain 40S&W at a pretty high velocity.

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    Member Array MSteve's Avatar
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    I don't know what the difference is in recoil vs. grain, but the table below shows the drop of the round in inches at the respective distances. This info based off of speer gold dots, and can be found on their site in separate tables for each round. I just merged it into one table when I was searching for my last carry gun.
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    Double Tap 135 grn

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