RockyMtnMT
Official LRH Sponsor
You also have to take into consideration that larger bore dia needs less pressure to create the same vel of a smaller bore with the same weight bullet. Larger dia bullets of same weight and length need less twist to stabilize. Or said another way. Long heavy for caliber bullets are easier to stabilize in larger bore dia.A 140 .257 Would be better than a 140 6.5. That's obvious. But now we have 150 6.5s that would be better than a 140 .257. I doubt youd tell the recoil between the 2. Same with a 170 27 cal then a 180 7mm. 7mm would be better, yet you'd never know the difference shooting it. So let me ask this, why is there no 23 cal or 29 cal? Wouldn't a 100 grain 23 cal be better than a 100 grain 24 cal? Or a 200 29 cal better than a 200 grain 30 cal?
The bullet examples that you gave are all very close to each other for bc. Using the same form factor or bullet design. Your bigger bore bullets would have a little advantage in bc. More likely would come down to the ability of the respective cartridge to creat vel.
Pretty hair splitting stuff.
Steve