Len,
Have you found, as I have that the Axis are hard on bag targets? Seems they penetrate farther and actually blow through my Morrel bag. What I mean by blowing through is that they blow a large chunk of the stuffing out the other side creating a large hole when they pass through. Course I've only shot aluminums, terminator hunters, and vapor 4000's into the bag and its stopped them.

Guess there actually is something to the skinnier shaft penetrating better.

*On a side note, I've tried the Wasp Boss SST 100 grain, using 3 four inch offset feathers without great results. While they do fly close to field points, I get some drastic flyers. I can shoot helicals out of my bow because of the drop away rest but my boy still has the prong type rest. G5 100 grains shoot to point, but I'd like them sharper. But I'd rather shoot a G5 through the lungs, then a razor blade type through the guts. Might have to buy the kid a drop away and do some more testing with helical or Quikspin vanes. Good luck on the search for a standard insert. Keep us informed.