Well it's been 5 days now since I contacted hogdgon via their website asking them to email any data on lil gun. I mentioned all the rumors online about forcing cone damage. Either I'm the gazillion'th person to contact them about this and they are just ignoring the question. Or maybe they have no satisfactory answer? If I have time tomorrow and still have not received an email from them I will try calling to see if I can get any answers. I'm on my second pound of it and can see no issues with my revolvers but I usually load pretty heavy projectiles and load minimum starting grain loads. 15gr.in 357 with 158 jhp, and 18gr.in 44 mag with 240 jhp.