Remington 19170 and 19171 chokes?

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I recently purchased a Remington V3 with the Remchoke system.  I am looking to get some tighter chokes for longer ranges, and noticed these ported and extended chokes, but can't find any comments on their patterns. Does anyone have any experience with these two chokes?

Planning to use 2.75" #4s for turkey and varmints, up to 3" #4 buck for predators.