The inherent "advantage" of the Double rifle is the almost instantaneous second shot--

I am curious if anyone has actually measured personal times in tenths of a second regarding the difference between something like a 470 NE and a 458 WM shooting the same weight bullet out of guns of similar weight.I would think the difference would be measurable, maybe up to 3-4 tenths of a second.

How much would the Blaser action decrease this difference??

Why am I curious and wanting to quantitate speed??

Got a new member,a young professional in my hunting club who very goodnaturedly has handled my Double and jokes with me about my "antique heavy" gun with 2 shots versus his "lighter" Ruger 338 bolt gun which holds more ammo and can shoot game further out. I respond and say 2 fast shots with the absolute reliabilty of the second shot of a Double vs a short stroked bolt and death!!

Nice fellow, but he definitely doesn't want to experiment at the next level and really compare shooting at speed with maybe my 458 Bolt shooting full bore rounds against my 500 NE.I know he is not crazy about the recoil and he knows the Double would be faster---even so,he just doesn't appear to understand the perceived need for the small increase in 2nd shot speed in exchange for the loss of the extra shot in the bolt.This is sounding like one of those 9threexfifty7 tests!!!

Any video's out there with fellows needing that 2nd fast shot? Or better yet dudes shortstroking their bolt under stress when attacked by an animal!!