458 Socom, 450 Bushmaster, 50 Beowolf
 

Does anyone out there have one of the three calibers? I have been thinking about getting a marlin guide gun in 45/70 until I started looking into these calibers. I think they would actually work better for what I am intending to use them for (heavy brush hunting for wild boar) I like the compactness of the 16" M4 carbine style and the semi-auto for faster follow up shots.
Any info you can provide would be much appreciated.

Thanks