I am still debating what I want to get for grizzly bear protection. Have narrowed it down to an M1A socom, 12 gauge, or 45.70 guide gun. Who makes the most bad boy penetrator slug out there that will drop a grizzly? How much more power will a 3 inch get over a 2.75 inch? Is it worth having one less round to have a 3 inch over 2.75? I am looking at loading them in a 20 inch shotgun. What are the top 5 penetrator slugs that will plow through bone and bears? Like these but they look like a hollow point with less penetration. http://www.remington.com/product-families/ammunition/shotgun-families/slugs.aspx Wanna kill these ads? We can help!