Quote Originally Posted by lysander View Post

I take it we are in agreement that he doesn't have to worry about his near miss with the hole?

Besides, even if he drilled all the way through, he'd just have an extra gas port to nowhere....
The first part, yes. The second part...…. meh.

Larger ports display accelerated port erosion and induce an anomaly in the bore rather close to the muzzle.

Now I don't know exactly how it will affect bullet flight or how quickly it could erode a track that actually breaches the crown, but I suspect effective barrel life would be significantly shorter before abnormal accuracy issues present.

Hence why I had my muzzle counter bored the muzzle of the barrel that the smith screwed up.

Better safe than sorry.