Well if you are interested in results using big 3 blades…the original Snuffers were 1 1/2 inch 3 blades. For new guys that don’t know what Snuffers were imagine a vented version of the head you are asking about. Personally used em on critters from javelina sized to AK bull moose, in US, African animals etc. Rough, rough estimate….. 50 lb(ish) traditional bow good with these heads for deer, black bears, pigs etc. Elk, caribou sized 55lb (ish). For the biggest stuff in North America 60-65 lb (ish) bow. Matched arrows in reasonable weights, no concerns at all with penetration unless you crap the bed totally on shot placement. Just my 2c from 40 yrs experience shooting big 3 blades from traditional bows.
R