Dot drill @ distance ?

LibertyArms

Gunny Sergeant
Commercial Supporter
Full Member
Minuteman
Jan 6, 2010
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Southwest PA
i picked up the dot drill here a while back. Was wandering if there was another target for shooting at farter distances, or what size the tagets would be. i ahve by no means perfected the drill at 100, but wanted to start shooting them at 2 and 3 for practice puposes only. if that is really important ? what sizes should the circles be ?