OP, even if you got everything else 100.000% perfect, you still have made a bad mistake not using a manual but using a load off someone’s Youtube video. One of the cardinal rule of reloading is NEVER use a load off the web from someone you don’t know loading for a rifle that is different from yours (which it ALWAYS is). This is a sure fire way to get into trouble. Instead of being confused and frustrated, you should be thankful that your gun did not blow up in your face since your load is obviously too hot.
Take the advice from me and others on this web telling you to get a manual and understand the reason for working up a load before you get hurt.
Take the advice from me and others on this web telling you to get a manual and understand the reason for working up a load before you get hurt.