I gave up on 300 Blackout after studying the ballistics and reading the other posts on the matter.

Then I went back to my original 2 choices, the 6.5 Grendel or 6.8 SPC.

I did some serious homework on both of them and decided on the 6.8.

Mainly because I have a bunch of .277 bullets laying around..

Tried to order the upper and everyone is out of the bolts. Must be a pretty popular round.

However, I found a upper in 6.5 Grendel. Everything I have read, this round sounds pretty good.

Gonna find out by this weekend.

2 me