The 8 requirements are so that like temperature stable powders are used, same length barrels, similar construction hunting bullets are used because we are talking about hunting not punching holes in paper and sighting them in both at 3" high at 100 yards which one does to get a good 300 yard trajectory that can be used out to 350 yards by holding on the backbone of a deer sized animal. In a previous post you said how the 6.5 CM was better than the .270 because the long high b.c. bullets allowed better shot placement. I have shown you that you are are not correct because the .270 has a much better maximum point blank range as well as less wind drift (often) with the newer good b.c. medium weight projectiles in .270, up to normal hunting distances, say 350 yards. Furthermore the .270 has 10% better cross-sectional area for a larger wound channel. Why don't you have enough integrity to acknowledge that this is correct?
All you have shown is that in your contrived scenario, your .270 has certain advantages. I, however, do not share all 8 of your constraints. I hunt regularly and successfully with the 147 ELD-M, despite your pre-conceived notions, and the .270 Win has no bullet analogue for comparison. Further, a PBR of 250-300 meters is plenty for me, since I'm dialing if distance is beyond that. I occasionally get shots at game well beyond your 350 yard limitation, so my set of criteria differs from yours there, too. Finally, by pushing the 147 ELD to ~2700 fps, which is what I actually get in several 6.5 CM rifles (yes, using temp-stable powders, as a matter of fact), it recoils less than the .270 and drifts less in the wind, both of which lend to better shot placement.
Clearly you're entrenched in your position, regardless of the facts, and this back-and-forth is becoming tedious, so I'll just say that if the .270 Win suits your needs and uses, then I'm happy for you. I have no problems with the .270, but when I'm looking for ballistic advantage I lean to other chamberings.
