Jake, always sight in at distance on your highest power, at 25 yards if you were on 9x the parallax could have caused the difference in POI, You were dead on at 100, scope height of say 1.5", you should somewhere around 3/8" low at 25 yards. I wouldn't waste the ammo, I'd vice it, put it on target and turn the power selector and watch the crosshairs, its prolly fine I'm going with parralex being the culprit at 25 which without an AO you can't really test, your test would most probably have the same results as your original session, because of how your eyes percieved the the target picture due to excessive parralex. Every long range shot on deer that my students have missed with my rifle has been attributed to improper focus setting, they miss, I get on the rifle, set the focus, they connect the next shot
RR

I shot it at 25 yards at 3,6, and 9X. Then did the same at 75 yards and was satisfied with the group.

-Jake

Good deal. Now you have to put those new rounds to good use.

Leveroltion has greater BC. You need to compare that between bullets. It should be flatter. Some think a flatter bullet, will caue more trauma.

This year I am going flat 350 hornady interlocks, with reloader 7, couple grains below max marlin loads, around 16-1700 fps.

About 3/4 high at 75 yards, on at 50. Should be maybe 1.75-2" low at a hunder. Doubt I will shoot it that far/

Jake if you're bringing that 45-70 up to the camp for bear that will make 3 of them. Mine, my cousin's and yours. Although I'll have mine there I will likely use my .58 cal muzzleloader again.

I'll be bringing it for sure. But I'll likely carry my .30-06. My grandpa gave it to me back in 2005. He's got cancer and is in his mid 80s. He'd be tickled if I got a bear with the '06. So I'll be carrying that just in case I happen to get lucky. That would make his day I'm sure.
-Jake