Excellent post 9ThreeFifty7. I have shot a .270 loading 150g Noslers to 3000 fps (hot load for most rifles, fine in mine). Sighting in at 2.5" high at 200 yards, it's dead on at 300 yards, then I use the 1', 2', 4' rule for 400,500 and 600 yards. The longest I've killed an elk at is 450 yards, deer just under 400 yards. In both cases neglible wind, very little elevation change (which screws me up more than wind) and a solid rest (over a fallen tree or a rock, cushioned by my hand). It's a rifle I've had for 30 years and put well over 5000 rounds through (on it's second barrel now). Elk are large animals so a 400 yard shot is not difficult in good conditions. I think I will limit my 375 H&H to 400 yards and under, based on two things. I doubt I will put 1000 rounds a year through it, like I did my .270 when I was in my 20s. I do plan to put 500 rounds through it this year. Second it's trajectory makes reaching out more difficult, though a 250g Swift A-Frame moving at 2800 fps shoots pretty flat.

Regards,
Chuck