I believe you, but that could stand some documentation in order to help in explaining it to an SJW.
There's a ton of it out there regarding gun terminology and technology. Everything from the intricately technical to, "I'll explain it so even YOU can understand it, lamebrain."
The problem is that we can't seem to win on that front. No matter what method is used to try and educate, we are simply "diverting the issue with technobabble." These people have zero interest in facts. They have an agenda to promote.
ETA: In fact ,educating often seems to make things worse. Look what happens when "reporters" are taken to a range to shoot an AR or a handgun. The firearms suddenly develop almost mythical murder death kill properties. Why, the atmospheric disturbance from the bullet alone can cause tornadoes!
The only education that seems to at least get 50/50 results is on the local "friends/families/coworkers" level. Take someone you know to the range and you have a chance of if not making them pro-gun, at least curing their hoplophobia. Most MSM reporters are a lost cause.