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Had the opposite problem, tried 75gr and could stabilise them!
bigred head shots on goats is good practise, just behind the ear and they either drop on the spot or you miss! Can go well past 200m...

Would have to check but pretty sure, standard factory one. Using 55gr amax reloads or hornady factory ammo

My t3 in 223 manages whitetail well. Had a couple of big bucks walk 50-100m with double lung shots but most drop on the spot as usually take head or neck shots out to 200m