4in barrel vs 3.8in for duty carry

[BLA]

I was wondering how the ballistics do compared to one another. 9mm scenario. Thanks

 

[gunman41mag]

I would think, you'll see a bigger increase in velocity between name brand ammo than .2 inch barrel

 

[hrearden]

Gotta go with gunman on this one. Even pistol powders dont burn fast for a .20" increase in length to up the velocity.

 

[inlineman]

I cant imagine there would be a noticeable difference.

 

[BLA]

Thanks I appreciate the help

 

[unlimitedrubicon]

If it is duty carry I would go with the longer barrel for the slight difference in velocity and the slightly better sight radius. If I were to be in a defensive position against an armed individual and could OC without issue I would want every advantage I could get.

 

[unlimitedrubicon]

Duty carry I would also go with atleast a .40 if you can do it.

 

[IndyBeerman]

Like they said above, BUT if your firearm is rated to use it, +p or +p+ will get you more velocity, 100-150fps over a standard load using +p and maybe tack another 50-75 on top of that for +p+.

YMMV depending on type of ammo and how they load it out.

 

[BLA]

I plan on using Hornady Critical duty +P in it on the job. I like the extra magazine capacity In the 9mm.

 

[cosermann]

You will likely not see a significant difference in performance with a 3.8" vs 4" barrel in 9mm. Typically, you don't start to see significant differences until you get below 3.5". The farther below 3.5" the more difference you're likely to see. See note on barrel implications on page below:

Best Choices for Self Defense Ammo

If you have any doubts, you can test your carry ammo for performance.