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1/25/2018 7:38:29 AM
Posted: 3/29/2002 4:51:04 PM EST
OK, the box of CorBon 135gr ammo says "1325fps"
I assume that this is from a 4 or 5 inch bbl, but I wonder what the difference in velocity would be between the G27 and G23, especially with the polygonal rifling, which is supposed to give you more velocity.
Link Posted: 3/29/2002 7:12:14 PM EST
The Glock manual claims for a 23, 4" barrel, about 295m/s (968f/s), For a 27, 3.5" barrel, about 285m/s (935f/s). I assume the numbers are from some standard test ammo the use. Basically, a few percent increase in velocity for the 0.5" longer barrel.
Link Posted: 4/12/2002 8:26:12 PM EST
I was wanting to chrono the diff between the glock 27 and my glock 24 (6" barrel)

I'd love to see how much the 27 robbs the cartrige.

but i sold my chrony due to a cash crunch.
Link Posted: 4/13/2002 6:38:19 PM EST
Link Posted: 4/14/2002 9:33:20 PM EST
According to several articles in Am Handgunner, ammo loses about 50fps per inch of barrel shrinkage of the full size gun. Thus a 4" barrel should be about 100fps over a 2" barrel.

This is generally speaking, of course.
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