Good morning, sir.
I am using them for one of my longbows.
I have them on 125 gr. steel adaptors, for 264 gr. in front of Grizzly Stick Alaskans cut to 27 inches, from a 54 # @ 26 1/2 inch bow. They are left bevel to match my fletching, and they fly well, and hit to the same point as field tips and blunts adjusted to the same weight with brass washers. I used a Dixon Broadhead Aligner and Quik-Stick to attach the broadhead to the adapter.
I had some difficulty with sharpening early on, due to the 3 layer construction---bought one of the KME knife sharpening devices, which helped out alot. (NOTE: not the broadhead device sold by the same company)
Hope this helps.
Seem to hold edge well---have not shot one at anything bigger than a jackrabbit yet, so I have now real world experience regarding penetration.