maybe its just because I was employed for 4 decades as an engineer , but I've always made the choice to not take things in advertising seriously, and preferred to deal in facts. you can look up load data, projectile sectional density, ballistic coefficients, rifle weights, and damn near anything else. you need to compare any two cartridges. what youll find in most cases is that similar cartridges with similar projectile weight and diam and velocity, produce similar performance. its not going to make a bit of difference in the field, if you add or subtract a 100 fps or 5 grains of bullet mass. theres very little advantage gained in a choice between a 270 win or 6.5mm creedmoor over practical ranges. what does make a difference is the rifles operator skill's, at placing a shot carefully and the bullets physical properties, example alloys used jacket thickness and impact velocity. you can,t ignore physics, heavier mass and higher velocity carries more energy. you should not ignore decades of field results, theres very few modern cartridges that provide any significant advantages over strong decades old designs like, the 22 hornet, 22-250, 25/06 , 270 win, 30/06 , 300 wby or 375 H&H. step back mentally any time someone is bragging about the newest super zapper, ask yourself if your current rifle has ever failed to perform well, or if an extra few inches of flatter trajectory would make much difference. especially if you realize that the vast majority of game is killed at well under 250 yards. use the calculators and youll soon realize most NEWER/BETTER = marketing. the 22 hornet, 22-250, 25/06 ,270 win, 30/06, 300 wby or 375 H&H will do damn near anything thats needed to be hunted.
https://www.hornady.com/team-hornady...alculators/#!/
http://bergerbullets.com/twist-rate-calculator-3/
http://www.shooterscalculator.com/recoil-calculator.php
https://www.hornady.com/bullets/rifle/#!/
https://www.speer-ammo.com/products/.../rifle-bullets
https://www.hornady.com/support/load-data/
http://www.hodgdonreloading.com/