Marbles thank you for the question about what would be different. I did kill the buffalo with one shot and I did not get full penetration. However it was the follow up over two days that lead to several close encounters and near death experiences while tracking that formed my opinion.
I will tell a little bit about the story to hopefully explain my comments and why I switched to a big bore rifle following my Africa hunt. We were hunting along a river that was several hundred yards wide and had very dense reeds about 13' tall (see photos). The trails in the reeds were hippo trails winding through the reeds. We were back off the river in thick cover when my buffalo appeared fairly close at about 30 yards for a quick broadside shot. He stopped broadside, however as the shot broke he started to spin away and there was no opportunity for a follow up shot due to the thick cover. No one saw the actual impact of the shot, but I felt it was okay. We waited about an hour to follow up and start tracking. On his track we had blood very soon on one side only, so no pass through During the early track the visibility was about 50 yards max and we expected a charge at any moment. The track soon reached the river where visibility was 5 yards at max (see photos). Once we entered the reeds I realized I wanted/needed a bigger gun, not only for my wounded buffalo but also for the hippos. Upon entering the reeds and tracking for about a 100 yards the buffalo charged to where we had just stopped moments before. He ran by at about 10 yards and we could not see him to even shoot. It sounded like a locomotive coming through the reeds. Once the buffalo passed the PH looked over at me and said I can't believe you are still here. This went on for two days and I think my lesson was I never expected to have so much adventure in such close quarters. While some might not follow the buffalo into the reeds, I felt it was my duty to finish what I started.
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