Ammo

[Jayz]

Federal premium speer 22 wmr tnt 30 grain with muzzle vel of 2200fps stated on box. Out of what length barrel? Is it ok to use in my mini revolver 1 5/8  inch barrel in my NAA 22wmr? Manual says nothing over 1860 fps. Again barrel length?

[Jayz]

Is velocity in any gun related to barrel length? It is not stating varmint on box... Already bought a box of 50 before.I saw the warning about nothing over eighteen sixty and this stuff is twenty two hundred.

[Anvil]

Jayz, all I've found different with longer barrels is an better sight radius. And that makes little or no difference with NAA's.  I think Velocity depends on the twist and powder charge.