I've been smacking the gong @ 500 meters with ease, using my load... At the 700m mark, it starts getting tricky.
Rifle - Savage model 16 FLHSS
Barrel - 22" with 1:9.25" twist
Bullet - Hornady 68gr BTHP Match
Brass - Hornady @ 1.750"
Powder - Varget @ 24.5 grains
Primer - CCI 450 Mag Small Rifle
COAL - 2.310"