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Rifle Scopes Which Size Butler Creek Flip-up for Sightron SIII

Re: Which Size Butler Creek Flip-up for Sightron SIII

#16 and #43. The ocular side is tricky, it's 2 diameters. At first when you slide the #16 on, it'll feel like the cap's too big because the of the focus dial, but once you slide the BC cap all the way back on the housing, it's perfect.
 
Re: Which Size Butler Creek Flip-up for Sightron SIII

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Parkincense</div><div class="ubbcode-body">OBJ = 2.28"
EYE = 1.67" </div></div>

so the Obj seems to be right between a #40 at 2.25 and a #43 at 2.31...

Is the best bet still to go with the #43?