Now you have another problem, Cartridge overall length vs mag box length.
Of course, if you spec a reamer out as Beluebo mentions(as many do), there is always the thinking that you can find a bug hole node with the bullet jumping a country mile. Then you are forced to talk yourself into accepting that 1/2" accuracy at 100 yards, at least for a while when the barrel is new.
I have over 50-60 reamers, never counted, along with uni throaters.
Thinking has sure changed over the years on reamer design, in many ways with some good and some not too good. Selling and marketing have to always go with what the popular thinking is of the time.
Think about it, how many reloaders/shooters go to the lengths that Gingerman has gone to in educating himself and purchasing the necessary equipment to accomplish his accuracy goals? Many have learned from the experience he has shared here on this board!
As Beluebow has suggested in his reamer design, the next logical step for Gingerman and others is to realize that a Long action is a logical conclusion, but how popular is that? Long actions while practical but NOT popular, that extra 6 oz of the weight of a long action/stock is a deal killer for many. Beluebow's reamer design is THE accepted way of designing reamers today.
Truth be known, I doubt if Gingerman will ever shoot more than one shot on a deer or hog when he is done with his load development. Even running his COAL as a single shot would not hinder him at all as I am sure he will be able to hit Oreo Cookies at 300 yards and rarely IF ever miss.
The sad truth, it is easier for a gunsmith to have his reamers designed to where the bullet shank/BT is above the Shoulder/neck junction, they get fewer callbacks from their customer's accuracy issues related to doughnuts. Barrels are expendable and are running $750+ each, plus wait time. So, if you only get 400-600 rounds of acceptable accuracy, it is no big deal.