Given that in my Sig P516 suppressed, the least failing ammo turns out to be Hornady 75gr TAP SBR, I'm wanting to know at what range it will become ineffective. Given the 10" barrel and the starting muzzle velocity from a 14.5" barrel test on these forums indicates 2460fps, what could I expect at 50yds from my 10" Sig? I've seen tests indicating from 22 - 30 fps/ft change in lowering barrel length each inch. I've not found ballistic charts for this round from a 10" barrel so am thinking a drop of 250fps down to 2200fps. What could I expect at 50yds? Is there still enough velocity for this round to be effective for home defense?