Almost ANY SD ammo will work in the 5 & 6" barrel in a 9mm.
The 4" is also a good barrel length to get high fps from your ammo.
One only needs to get picky about ammo when you get down to 3.5 and 3" barrels with a 9mm pistol.
FPS will fall of quite a bit and you will need to find ammo that will work under this handicap and still achieve good results.
You can't go strictly by the fps of the ammo, since the companies design their bullets to work for the "Makeup" and design of "Their " bullets, with the correct speed to perform correctly.
One reason you will see one 115gr JHP at 1040 fps and another at 1166 fps but they both mushroom and meet all requirements needed in a SD test.
Have fun.
The 4" is also a good barrel length to get high fps from your ammo.
One only needs to get picky about ammo when you get down to 3.5 and 3" barrels with a 9mm pistol.
FPS will fall of quite a bit and you will need to find ammo that will work under this handicap and still achieve good results.
You can't go strictly by the fps of the ammo, since the companies design their bullets to work for the "Makeup" and design of "Their " bullets, with the correct speed to perform correctly.
One reason you will see one 115gr JHP at 1040 fps and another at 1166 fps but they both mushroom and meet all requirements needed in a SD test.
Have fun.