have a buddy that had the same problem. I do not like these things, his did not even open on the deer it went in like a field point.
i will never shoot mechanicals.
good luck
Most mechanicals open.....period !! I have never had one.....nor seen one that did not open !!
Usually what happens is that the blades open after entry(not on impact), so there is a small hole in the hair but by the time it gets to the organs it is fully opened. If you pull the arrow out , most of the time Spitfires will close back up as you pull them out.......and could appear to not have opened although they did !!
Nichols......
One of a few things could have happened or all !
First you should know your equipment well and importantly your KE when using Spitfires. I have great luck with them at 70 # ke but would not recommend them to anyone shooting below 60# KE !! Check your KE !
Secondly...make sure your bow is tuned well and arrows are spined properly ! If your arrow was flexing or wobbling as it hit......you would have lost a tremendous amount of energy on impact.
Or you could have caught the back edge of the shoulder blade and that is a hard bone to penetrate. I have a friend that made a hit like that last year and swore it was perfect......he killed the deer a couple months later with a drawn up shoulder . He found blood for hundreds of yards but in actuality......never hit anything vital !!
Good luck.....learn from it.......and nail the next one !!