I have shot the Entrada (now Ultra light I believe, but cheaper .003)
They've been rebranded... in .400 and footed with 2117 2" "over-footing".
I shot several into rocks... one it flattened the field point, no damage to shaft...
Another, a glancing blow, bent the 100 gr. brass insert INSIDE the shaft, so because I'm anal, I sweat off (I use hot melt brown)the over footing, the insert and checked the shaft...
Under a strong light/magnifier, there was perhaps a 1/8" crack in the end, but with a new brass insert and over footing re-installed, I felt it would be fine, but again, being anal, i have a friend who shoots "Other" types and has a 27" draw so I cut it off for him...
I cut my teeth on the standard 5575's and then went to the ULight for the same reason, to not shoot rebar weight arrows and still increase front weight.
My shafts were around 685 total, 29.5" and shot from higher performance 50# bows.
I believe the over foot slightly longer then the brass insert helps absorb even that horrific glancing blow...YMMV