I would like to ask a question about barrel bursts due to barrel bulges. May I assume that bursts of barrels, even with more slight ring bulges, say at about mid barrel, are due to the weakness of the metal at that point? That it is the effect of pressure and weakened metal?

I don't want this to sound like a trick question I am interested in this and would like to understand.

If pressure and weakened metal are the cause of the burst how is an equally extended dent different? Directional?

I am interested because at a point in the past I sent a Fox away to have dents removed. After it was returned to me I realized it had a bulge, so slight I have to hold it to a light to see and even doing this I can't feel it. It is a slight ring bulge.

I am trying to determine if I should send it for removel or leave it as it is?

I have heard the term work hardened and know that would apply to a repair, but I have also heard that ring bulged metal is work hardened by its creation?

I already have invested all I want to put into this gun but $50 or $60 to have a nearly invisible dent removed is not that much if it makes the gun safe to use, but does it?

Thanks for all interested, helpful replies.