Greg,
Gregg Coffey can build them with slightly different sized grips, and I know he has done that by request at times, but the Bow Bolt does need some structure around it, so I would expect that a bow with the Bow Bolt would usually be as large or larger than one without a Bow Bolt. I have 2 almost identical Classic Hunters other than carbon backing and a Bow Bolt on one as opposed to the other. The one with the Bow Bolt undoubtedly has the larger grip of the two. I'm sure you are correct about yours. I am also sure that Andy's bows are as he has reported. If you want to know more, you can always ask Gregg.
Allan