I was, finally, able to get some ballistic gel testing done on this bullet.
Shot at 75 yds from my 16" Ruger American.
39.0 gr of LilGun, at an OAL of 2.230".
The round traveled completely through a 16" block of 10% Clear Ballistic gel and stopped inside a sand bag backing up the gel block.
The widest expansion was .863". The unfired bullet measures .452", that's 91% expansion.
I'm not sure one could ask for a better mushroom than that.
Edit.....
I guess I should have mentioned that this was shot suppressed, with a Silencerco Hybrid attached via ASR muzzle brake.
