Actually, I haven't followed closely enough to read about the Guide Gun, but it stands to reason. Until I can afford a slightly-pre-owned hammerless sidelock double rifle (pref. by Purdy or H&H) in . 450 or .470, however ... ~grin~ cn
<edit> side-by-side, of course.
The big doubles are a " Case Gun" , meaning much better in the case than in reality. More followup with the Guide Gun and one HELL of a lot less investment.
And prior to purchasing one go watch someone shoot one , I was stupid and didn't , I might have fired 25 rounds out of the thing in 5 years , and that was just in .450 Nitro Express much less the .470s and up. Sold the damn thing for more than I paid for it and counted myself lucky.