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Unread 01-24-2018, 11:59 AM   #17
Logger08
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Quote:
Originally Posted by DonVoigt View Post
Most heavier 9mm P cartridges are loaded to much lower velocities.
Usually, in the US, for subsonic speed for use with a supressor.

Just for the record 124 gr x 1000 fps = 124K, a 140 gr bullet at 885 fps has the same "impulse".

I have fired subsonic 9mm rounds, 147gr - they will not operate the toggle to its full rearward position!
Hello Don,
Yes, the S&B shown is also subsonic.
(I do not have and am not allowed a supressor.)

But I am really astonished the 147gr did not operate the toggle fully, me expectation was the opposite.
The impulse of the S&B is about 5% higher than the Magtech, even though the energy is about 10% less.
(Yes, I did not try either of them so far.)
But good to know.

Best regards,
Martin
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