*Heads 1-3 are all 125 gr. trophy tips with the blades swapped for Low KE blades for a cutting diameter of 1 5/8 minimum measured.
Head #1 -6.0 lbs Head #2 -6.4 lbs Head #3 -6.1 lbs.
*Heads 4&5 were stock 125 gr. trophy tips.
Head #4 -8.0 lbs Head #5 - 7.4 lbs
All heads were measured to the nearest 0.1 lbs per a digital kitchen scale. I can go into more detail later as to my method but even 6 lbs to open seems a little much but 8.0 lbs seems overill.
I love these heads but realized they robbed some oomph from my setup on deer last year. Not to the point of concern but it was noticeable when compared to other mechanical like a Spitfire.
I believe some energy is being wasted on blade deployment as I wouldn't think 6 lbs of force is required to keep them shut in flight. I suspect this has a lot to do with them performing less admirable than Rage on some of the penetration tests I've read.
I'm curious if some engineering type could calculate how much force a head must be able to resist without opening in flight when fired out of an average modern setup.
The broadside doe wasn't much of a test, blew through her like she wasn't there. But on a good sized buck, a hard quartering on shot and a sliver of an angle, entered just forward of straight up the near leg, exited back of the gut and shattered the off side hind leg into about 4 pieces. Maybe, and I mean maybe, one of my favorite fixed 2 blade heads may have gone the rest of the way and laying on the ground.... and a chance, maybe, to not have given up it's life in the effort..... but I was fairly impressed. Buck was on the ground in less than 40 yards.
They might be tougher to open, I don't know. I know I can use them in my regular quiver with all my other heads and they don't open up. Only real issues I've had with them is crawling around with an arrow on the string and you snag one dragging it in the sticks and grass..... they DO open up and are a pain to reset barehanded with one hand.... mostly felt fortunate I NOTICED it had opened.....
The top arrow was shot through a very large mature NY buck from about 25 yards from ground level. Deer was slightly quartering toward me. Arrow passed through one lung and liver. Arrow didn't totally pass thru and was recovered 30 some yards further as the deer entered the swamp. Arrow weight was 418 g and normal diameter.
Bottom arrow killed a mature mountain caribou that was shot 76 yards. Broadside, arrow passed through both lungs and landed 15 feet beyond the bull. Arrow weight was 463 g and small diameter.
Both broadheads weighed 125 g. FOC was a few percent higher on the Rage arrow.
I plan to slightly compress the dimple to make them a little easier to open easier. It probably makes no difference but tinkering and trying to reach perfection seems to be a trait a lot of us bowhunter have.....sometimes to a fault.
I have a lot of confidence in this head and am going to have them in my quiver on my upcoming elk hunt. I think the amount of blade you are pushing through an animal is definitely the biggest impedance to penetration but I think being hard to open has to limit at least. The low KE blades are going to be a boost for penetration for sure.