Just shoot the nocturnals, figure you'll have them on for
Maybe a few minutes of practice, they last OVER 20 hours. Also I've found going to a 125 grain broadhead made them fly better for me with greater foc.
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I got these at a shoe dept store for $60, there great until about 25 degrees. There also great to hike/walk in. Have had mine for 2 years now.
This is why openin day of gun I go real deep into the private land oak trees I have access too. Everyone walking in after the sun is up and leaving early push all the deer down to the area I'm in, it turns into there bedding area during gun season!
I can shoot 1" with my cheap ass savage 308, if I'm on a bench with sandbags. But that's not realistic at all so I shoot freehand and I'm happy with hitting a 6!inch target each shot at 100.
You probably shouldn't start at 100 next time. Start at 25 making it a hell of a lot easier to get sighted in. Shoot your first shot, without moving gun look through the scope and move the crosshairs via the adjustments to your bullet hole.