Hi Guys.. does anyone have any velocity figures for mag -tech .38 special fmj flat point ammo out of an M&P 340?
Mag-Tech .38 special ammo
- Thread starter T-BERRY B.
- Start date
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Steve C
Member
Information regarding velocityes a particular handgun will deliver is specific to firearm as even several different handguns of the same manufacture and barrel length may vary as much as +/- 10%.
Download Magtech's catalog at: Download Free Catalog
and subtract 100 fps from the velocities listed for a 4" vented test barrel to get an approximate velocity from the 2" snub nose +/- an expected variance from the particular handgun.
Download Magtech's catalog at: Download Free Catalog
and subtract 100 fps from the velocities listed for a 4" vented test barrel to get an approximate velocity from the 2" snub nose +/- an expected variance from the particular handgun.
OP
Thank you for the information Steve.
DWalt
Member
The velocity change per inch of barrel length can vary quite a bit for different propellants, and also the length of the barrel - that is, the velocity change per inch will be different from 10" to 8" vs. 6" to 4". It is not a constant. Typical will be 40-50 fps/inch but it could be more or less.
