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idek · May 16, 2012, 08:55 PM

For a defense gun, I'd stick with flush.

In addition to what zippy listed as benefits, it is my understanding that extended chokes can improve patterns of especially tight chokes because they can taper over a longer distance and cause less deformation (or at least that's the marketing pitch). This may be why turkey chokes (which tend to be very tight) also tend to be extended. I doubt there would be much difference with IC chokes though.

May 16, 2012, 08:55 PM	#8
idek Senior Member Join Date: August 20, 2009 Posts: 903	For a defense gun, I'd stick with flush. In addition to what zippy listed as benefits, it is my understanding that extended chokes can improve patterns of especially tight chokes because they can taper over a longer distance and cause less deformation (or at least that's the marketing pitch). This may be why turkey chokes (which tend to be very tight) also tend to be extended. I doubt there would be much difference with IC chokes though.