I had only one deer run from being with my 7mm stw. First generation siroccos 150 grain. They were thick walled and designed for heavier game like elk. Nailed him 3 times and he went to the ground and came back up. All were thru the boiler room but he was dogging a hot doe and I guess he was worked up.

All others killed with the 140gr bt and they were dead before they dropped. Literally watched the bullet hit before the sight picture recoiled upward. My other guns never saw actually bullet hits. Killed deer out past 450 with both STW and 256Wthby. Shot 115 grains out of and never had a deer drop in its tracks. Usually made it 20 yards or so. Both calibers I used the Winchester BT lubalox coated black silver tips.

My 300 WSM I shot 150 gr accubonds and all deer dropped in their tracks with it.

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