We have been testing the vaiga shotgun with both slugs an buckshot first of all at 20 to 25 m. It will generally take around two buckshot to kill a zombie when you get to around 30 to 35 m or 40 being the furthest to shoot 40 m will take about four shots of buckshot 30 35, around three or two, depending on where the pellets hit and register. now with the Vega having a slightly shorter barrel than the other shotguns, but the Vega shotgun also has a a muzzle brake choke on the end of it, so it should be firing tighter shots at for the Rangers, and now they slug rounds are severely under powered. It will take two slug rounds to kill a zombie sometimes at point blank range, or even 3 to 4 shots at the further ranges and when using the Pso1 scope one the Vaiga with buckshot or slug rounds the slug rounds will shoot hi at times within 50 m or they will shoot low at 50 m.we are not sure why but around 30 m with scope on the vaiga with slugs hit pretty on for the most part so maybe you guys could check out why there are so many discrepancies with the ammo types in the Vaiga shotgun thanks