I had a 20" 1:8 Bartlien 223 it obviously was a little slower (2825fps) than my buddies in 26"(2950fps). We both hit the same plates out to 900ish with 75 bthp in a local match but as you know that wind turns into a real bitch.
I pushed the 80 ELD to 2850 FPS out a 20” Bartlein with 23.5 grains of Varget (still room to spare). That’s a good B.C. that’s only a $1 more a box than the 75’s.
I remember my first post on SH was asking if IOR was really as good as Rex made it out to be... and then everyone roasted my ass. That was the only indication I needed to stop listening to random youtubers .. or at least find more reputable sources.