I have long questioned Buffalo Bore's listed velocities. There is nothing that requires them to accept SAAMI pressure standards.
There is nothing that requires any US ammo maker to accept SAAMI pressure standards, since compliance is voluntary.
FWIW, I have chronographed some of their 45 Super ammo. Speeds are from a 5.0" Kart barrel, an average of 10 shots;
200 gr JHP advertised speed of 1,200 fps, chronographed at 1,252 fps.
230 gr JHP advertised speed of 1,100 fps, chronographed at 1,140 fps.
So, yeah, their speeds are off. They are faster than advertised.
Let us know when you chronograph their ammo and get back to us.