I like these type of discussions, as long as the purpose and intent is right. There is a difference in caliber (.308", .284", etc.) and cartridge (300 Win Mag, 7mm Rem Mag, etc.) it is a really good idea to help educate people and help others to understand the different terminology and specs for any type of firearm. I have seen people make huge mistakes and ruin rifles by running the wrong type of ammunition through them just because to projectile was the correct caliber.
The bigger issue with these kind of mistakes is SAFETY.
A firearm can be replaced (even customs that cost a lot). It may not be convenient and might even take a long time to save money to do so. But people, or body parts, can not be replaced.
Let's all remember that the purpose here is to educate and HELP others. Not to tear anyone down or come across as some superior mind. Help, educate, and befriend. We should all be on the same team here and should all be working towards making the shooting sports better. We want more people involved to keep our passions alive and progressing. Please take the time to help others when they need it. But, remember that we all had to start somewhere. Some of us have been shooting and reloading for a long time, others are just starting out where we were years ago. I had an incredible mentor years ago that helped me learn and always took time to explain things when i had questions. He made it a great learning experience for me and was a great influence on me when I was younger. I attribute his example and knowledge for instilling the passion for guns and shooting that I hold so close today.
HELP others by giving them good (SAFE) information, and having patience with them so that they have a good experience and want to continue in the pastime that we all enjoy so much.