if you have a full choke, bulging your barrel may/may not occur immediately.
may if you put enough rounds through it, eventually, either way, does put more strain on your barrel.
ive been putting steel through a 30 year old Remington sportsman with a full choke(typically 3 inch magnums) since the restriction came into affect. not many rounds mind you, maybe 60 a year?
no problems with mine so far.
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