I've hunted with both. My first deer hunt was with a G3 and 20 rd mag filled with silvertips many years ago. Only needed one shot back then but boy was I ready to lay in a field of supressive fire if required
(LOL). Since then I've been doing my hunting with a bolt and I can't think of an instance where a quick second shot from a semi rather than a bolt would have been needed. I do agree that there are probably instances especially in very tight bush where it might be handy but for myself I would rather have the inheirant accuracy of the bolt over the semi. Yes before you jump on me I know that some individual semis are very accurate but in general the bolt will be the more accurate rifle. To me hunting is all about taking the animal with one well placed shot. Anything else is a personal disappointment. It has happened where I've really needed that second shot
but the speed of the bolt was adequate to the task.
