450 Bushmaster vs. 458 Socom pros cons help me decide - AR15. COM I'm contemplating building a big bore 10 5" SBR pistol upper for shooting suppressed I can't decide between 450 Bushmaster and 458 Socom It seems that there is a better selection of 450 Bushmaster ammo available, but I reload so that is not really that big of a deal What are the pros and cons of each and which would you choose and why?
Cons on a Pencil Barrel gt; Build It Yourself gt; AR15. COM I like the idea of a light barrel and I am looking at a 16" pencil barrel for a light build Any cons on these barrels? Beyond less stiffness perhaps and less heat absorbtion, what is there in your opinion ? Thanks