[RobertSmith]

Does anyone know of a slug gun under 350 I prefer a 20 gauge but if a 12 is all I got I'll take it and I want to be able to kill a deer at 100 yards and I don't want a single shot

Ok, I had read your requirement, visit following site once:
https://saffordsportinggoods.com/category/mathews-archery-store/
Hope this will help you.

 

[RobertSmith]

Hey....
A slug gun ranging from 100-150 yards may cost upto $500.

 

[RobertSmith]

From my experienced I will like to suggest that you will get slug guns from Safford Sporting Goods at an affordable range. Here you will able to get other products like gun slings, gun safety, choke tubes and many more.