450 Bushmaster AR build feedback

[redleg10]

Thinking about building a 450 Bushmaster 16" rifle, anyone have some experience with this caliber. Type of dependable mags and or replacement and brand followers, I have pmag, hex mags, and lancer mags . Want to use 165-230 grain 45 acp bullets for reloading since I have a great supply of . Any feed issues with certain bullet profiles ? Powders ? ect. Any helpful advice would be appreciated.

 

[streak]

Idk about now but when I was looking at big bore AR’s the 450 bushmaster was super expensive to shoot compared to the 50 beowulf. May dig into and take that into consideration before you begin the build