John,

This is a good video.

When still hunting, I sometimes use the "African carry" but don't when others are around. For me, it is too easy to point my rifle at others.

The rest of the time, I carry my rifle slinged on my right shoulder. It is easy and quick to grab the butt and swing the rifle up.

A sling can be a problem (catching on brush) when the rifle is carried in front unless I stick my left arm thru the sling and grab the forearm. It tightens the sling somit is much less likely to be caught on brush and makes it easier for me to shoot accurately standing.