Two slugs.Two .510 N.O.E molds almost identical velocity. 840 and 860 fps. Both recovered from neck shots.. Both animals didn't die at impact and required follow up shots... I think hollow points are marketing for big bores... For me not worth it.... If you take chest shots with hollow points I have had zero blood.trail.....real world results... Also I'd like more energy... I've used my 50 enough for hunting I now its limitations...