Regarding chrono readings, my basis for comparison was shooting my 300 Blk over the same chrono with the same bullets.
I have seen the same thing in FC 223 brass, but at least in that case you can compare it with known good loads in other brass and realize it's just a brass issue.
I agree as well about some of the scary load practices that are promoted on the 68forums. The membership there seems to be generally less experienced though, and tends to just believe whoever is popular. Rost, some of those guys are loading long specifically to increase powder capacity and velocity. They will expound at length on the magical virtues of that extra .080" of length when given the chance.
