I saw an O/U on Gubroker. It's fixed choke full over full, but the seller says it gauges at cylinder. Is that because of wear??
I saw an O/U on Gubroker. It's fixed choke full over full, but the seller says it gauges at cylinder. Is that because of wear??
I imagine someone bored it out to cylinder for "reasons" or the seller could not properly measure with calipers. Also likely, that company's bore and choke dimensions aren't "standard" (and there are a lot of "standards").
Someone had it bored out. You would do wise to stay away from something like that.
Hypothetically, could one have said shotgun converted to use adjustable chokes?
It's risky to purchase a shotgun with bored out barrels thinking that you can have removable chokes installed. The reason is that, if it wasn't done correctly, there may not be enough steel to cut threads for removable chokes.
As skeetshooter has stated, it is expensive.
Briley could probably put in their thin wall chokes. It’s gonna cost though.
How a choke 'gauges' doesn't always mean what it seems, because the choke constriction is relative to the bore diameter. If the choke gauges big, but the bore is also on the large side, it may still deliver the marked patterns. A gross analogy would be that a full choke 12 gauge isn't the same size as a full choked 16 gauge. A comparison; actual bore vs muzzle, is needed.