750000 rounds??

I got the same Teslong borescope on Amazon.ca for about $70 Cdn/ I love it.

I have not worn out any pistol barrels, but I did find one (a 1911) that had a very poorly made barrel.

I have worn out many rifle barrels. They last 1,000 to 7000 rounds, depending on caliber.

A borescope is a great way to monitor. You see things clearly that you cannot see by looking don the barrel with the naked eyes.
 
That seems extremely high, and if it's a competition gun I bet they probably weren't shooting factory loads the entire time. When I worked at DVC (a rental range) we didn't keep accurate round counts but I'd wager nearly every gun would have some kind of failure before that point. CZ Shadows did seem to chug along quite nicely though.
 
Take under consideration...it's from a Texan.

Neither one of those Bbls in the video had anywhere near 10,000 Rds let alone 750,000 rds.

Show a pic of that S&W top strap for flame cutting...will tell the tale!

A small bore Bbl will wash the throat/leade in less than 20,000rds.
 
Looks to me like he was using a stainless steel bore brush to get those back to front scratches. I have a barrel that looks just like that. Never again.
 
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