On the 1st shot it will shoot great.
On the 10th shot it will still seem ok.
On the 25th shot you will hear a little crack.
On the 50th shot the barrel will melt from the friction of the high caliber bullet your shooting.
Once you re-barrel the gun:
On the 51st shot the barrel will again melt and your fingers will fall off onto the ground.
Once you put your fingers back on and re-barrel the gun....again:
On the 52nd shot the barrel will again melt, your fingers will again fall of onto the ground, and your wife will shake you out of the dream only to tell you it's time to go to work.