Idk who Jay Masters is and I'm not looking for any videos.
Yeah seem like a good poster but you discredit yourself when you make simplistic statements and it sounds like you've never trained.
If doing Casselberry style partials on the bench could allow people you bench 500 pounds in the same manner then we would see people benching that weight all the time (in the gym and on YouTube).
I'm not going to explain the benefit of partials to you but the key to them is use have to be able to handle the weight. They aren't 100x or 10x easier, they are only different.
You comment on working the muscle more on a full ROM as if Castleberry hasn't done all he can to develop his build. What improvements can we expect to see in Brads chest development if he does full range bench press? You think he can add more muscle at this point in his development?
You've exposed yourself here, unless you're trolling in which case you've done an excellent job.
I'm not posting the video because you're not worth me looking for it.
You don't want to be proven wrong so you won't look them up. You want the exposing to be done by you, but you don't want to see it not be fulfilled once you've already went all in. So you'll do anything include deluding yourself so that you can win your case.
Sad...
You would probably never look at a youtube video again if it meant you were proven right about a topic.
"Oh i won't look up a video clearly disproving my point"
"Since i didn't look it up you're wrong and the case still stands"
It's similar to..
"I've never seen it so it didn't happen"

The number of people who can still do the reps are small. But they become even smaller when full ROM is used. Just like how there are people in gyms who put videos on youtube of them doing squats that would do well in a powerlifting meet, but you see hundreds of comments in the comment section about how the lift wouldn't pass in a meet because of X , Y ,Z
I've never lifted? please lol. Look better than virtually everyone that's left posting here including competitors. I've sent pics of myself to people and i'll send to you and we can compare and you will have a worse physique 100%. Happens eveyrtime i do it.