I killed a 4x4 last year with a 140 Partition from my 7mm-08. One shot, DRT. Same bullet you're talking about.
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Where did you hit him? How fast were you pushing it?
MV is 2873 ft/sec, distance was 68 yards. He was broadside to me and I hit hit about halfway down the left scapula, near the long ridge that runs down the bone horizontally. The bullet took out both lungs and lodged under the hide. The bull took two startled steps forward then staggered backward and collapsed.
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