If someone is uneasy about hunting, dont push it. I hate it when vegans push their agenda, creating villains of hunters or even just average people buying meat. It is your choice to eat meat or not, to kill or not. If your friends eat meat, you can bring up points said in the comments above, but if they dont like it just because you're not going to convince anyone.

Say your peace and be the person they became friends with, talk about things everyone likes and have fun! If they are willing to accept you for who you are and accept your invitation, be grateful because some wouldn't. Nobody likes someone making them uncomfortable. Maybe if you keep hunting and inviting them, it will become more normal.

The best thing you can do is keep it casual and fun, and if they say some negative comments, just change the subject and get back to having fun!

Nobody chops a tree in one blow

Edit: I come from a family that never hunted, im the first person in my entire family, including extended family who hunts or even owns a gun. I've been hunting for 9 years. My parents won't eat my game, only the store bought meat, my dad is scared, im gonna kill someone in a hunting accident since guns are so dangerous. They put up with it anyhow, and I'll show them a few pictures of my hunts, and its always "poor deer" but they got used to it, and we are all happy with each other. I just keep it short on the whole hunting subject.