Re: I have a Rem SPS Tactical in the Hogue stock
I think the Hogue stock is excellent for other short action Remington rifles, rather than a dedicated target rifle. In a light barreled sporter or walking around type varmint rifle, it is great. But from bench or prone, you'll find it lacking, though still fairly complimentary to the inherent accuracy of the rifle itself until you choose or save up for its replacement.
I went with a B&C as well and, after bedding it, found significant improvement as well. I can only imagine the difference I'd see in a MacMillan!