https://www.indianagunowners.com/fo...illon-explosion-wear-your-safety-glasses.html
^^^^ Took me awhile to find, but this will tell you something about safety with primers..
And--This was done by a Professional Handloader...Bill.
I really appreciate you looking this up for me bill. Its really an eye opener. And thanks for all the advice you guys it means a lot to me. I am fairly new to reloading 1 1/2years. I think I'm going to pass on the rifle primers in pistols even though it's possible. I really like the load I make for the 9mm and don't want to change anything. I guess it was the cheap a.. in me not wanting to throw them away. Thank you guys again. Will
I have loaded thousands of small rifle primers into 40 without issue. In 2011 or 1911 guns it is not a problem as they deal with the harder cup without issue. Striker fired guns in 9mm or 380 might not get it to fire. No issue of over pressure or anything dangerous about it.