It concerns me the type of smoke. This rifle may have been charged with smokeless propellant???
ALWAYS USE A WITNESS MARK! NEVER USE SMOKELESS PROPELLANT IN A RIFLE DESIGNED FOR BP OR BPS!
If smokeless was not used, one would assume it was double charged and/or a bullet was short seated. Those Remington Ultimate barrels are extremely strong barrels to have this happen.
https://www.youtube.com/watch?v=210M...ature=youtu.be