I have the same question, just bought some for this season. A lot cheaper than most broadheads but I have heard good things about NAP
I had some but I sold them. In my opinion they opened up way too easy. Sent from my iPhone using Tapatalk
I shot a doe with them this year, the doe ran about 60 yrds and died. Sent from my SM-G900V using Bowhunting.com Forums mobile app
I shot a 4.5 year old buck this season with the slingblades. Put an extra 50 grains up front just for extra penetration. Went through cavity and into far shoulder, nearly came out shoulder I could feel the point. Went 60-70 yards, good blood. I'm not sure how they would open up in flight due to the design of them. Yes I have had them come open when I wasn't shooting but you would think the momentum of the arrow taking off would close them even if they were open before the release, but idk. You can easily resharpen them too, I used my lansky sharpener.