Yes Sir some ARs when built correctly are AWESOME! Sorry to hear that your brother passed, that has to be hard on a family and especially you as a brother.Thanks Len,I sure want an AR 10 for fun stuff.
Before my brother died we built an accurate AR 10.He lived in Texas and I would travel down there to visit and work on the AR project.
That rascal shot as well as some bolt action rifles.
We bought and built some <0.33" moa .223s.
Go ahead and build one in a AR 10. There are a lot of calibers out there these days. Even WSMs!
Not only for fun but good hunting rifles!
Wish you luck and please post when you do build one!
Len & Jill