John Barsness once admitted in print that he likes to achieve 2700 fps with typical cup-and-core spire-point bullets for general hunting. He offered some rationale about the metallurgy of gilding metal jackets and lead cores and mushrooming characteristics in flesh and bone. In his final summary--almost tongue in cheek--he admitted that 2700 is a lucky number that he feels he must psychologically reach in order to have confidence in his loading.
I will admit to having a obsession for the number 3000. In my OCD world, a bullet that flies at 2950 fps is like an old man driving a Buick, whereas 3050 fps is a Corvette cruising in the fast lane. So, for general deer and hog hunting like we have in Texas, I naturally tend to gravitate to the bullets that will give me 3000 fps.
In the 7mm-08, I cannot safely reach that threshold with 139-140 gr bullets, but I can with those weighing 130 and 120 gr. The same is true with the 7x57. So, in these two cartridges, I have little use for the popular 140 gr pills, or anything heavier. So, if I'm going drive at my self-imposed speed limit of 3000 fps, I'm going to concentrate my load work-up to 120-130 grain bullets.
I currently load for 2 7mm-08 rifles. My personal favorite is a Remmy M7 that loves the 130 Speer BTSP behind Re-15 or IMR4320 for a tad over 3000 fps. It is accurate and instant death on Texas whitetails. For my brother's SIL who shoots a SS Ruger compact with a laminated stock, I load the 120 gr bullets, either the NBT or TTSX behind Re-15 for around 3050 from its short barrel.
Call it a fetish or whatever you like, but 3000 fps is where I roll.
"For every complex problem there is an answer that is clear, simple.....and wrong." H. L. Mencken