And my point is a 7mm is smaller diameter than .30 cal, therefore with the same grain bullet in both, the 7mm will obviously have a better BC. Likewise a .30cal 225gr will have a better bc than a .338 225gr bullet.
From your other posts you've made it quite clear that you feel the 7mm is gods gift to shooting, and that's fine. I stand by my statement that you can't go wrong with either.
And your heavier rifle statement isn't necessarily true either.
Nobody likes having words put in their mouth, and I'm no exception. The 7mm bullet diameter is not God's gift to shooting, but it is one caliber that is well-suited to LR shooting. Your statement about BC completely supports what I'm saying. Thank you.
The larger the caliber, the heavier the high-BC bullets are going to get. That means that in order to match or exceed the smaller calibers, you'll need a heavier bullet, more powder, more recoil, etc. If a seasoned rifleman wants to move up to a larger caliber in order to take advantage of the higher BC bullets available in those calibers, then that's great, but he has to be willing to accept the powder consumption, recoil, cost, etc, that goes with it. When it comes to external ballistics, a 7mm can beat a 6.5, but only with a heavier bullet and more powder. Likewise a .308" vs. a 7mm, and a .338" vs. a .308". The "heavier bullet" and "more powder" are the key to the larger caliber out-performing the smaller one, which is completely determined by the available bullets in each caliber.
If a guy is coming here for advise on which caliber to buy, then the best choice is probably not a larger caliber with more powder consumption, more muzzle blast, more recoil, and more cost. That's why I usually recommend a 7mm or some sort (7-08, .280, 7RM, or 7WSM), because a 7Mag or .30-06 is usually the upper end of what most guys can shoot well, and within that recoil range 7mm gives you more for less (again, from an external ballistics stand-point).
Step up to a .30-378 with a 230gr Berger, a .338LM or a .338AM shooting a 300gr MK or VLD, and you can ballistically beat the 7RM/7WSM, no argument here. But most guys that are ready to step up to one of those rifles don't need to ask on this forum whether 7mmRM or .300WM is better
