07-21-2014, 01:31 PM
JASmith Wrote:No bad keystroke fellas!
The key item is bullet weight. Muzzle and impact velocity make very little difference as long as the impact velocity is in the recommended range for the bullet. For most lead-core bullets, that range is 2,000 to 3,000 fps. Since both the .270 and the Grendel have pretty close to the same range of bullet weights that can impact within this velocity at reasonable hunting distances, their effect on game is very similar.
The main difference is the .270 has a flatter trajectory and a longer range to the threshold bullet velocity but one pays the price of enduring heavier felt recoil.
Go to this page and read the linked papers for details: Ideal Bullet Weight
I am certainly no expert or physicist. But for the last 10 or so years i've probably taken 20+ deer a year (sometimes significantly more) with a variety of calibers, including .270, .257, .22-250, and recently the grendel. The majority have been with the .270. Most of the shots, maybe 80% are with in 100yrds. Try mostly for shots in the neck if the situation allows. In my experience, there isn't much of a comparison. No matter the target area, the .270 has MUCH more knock down power (as subjective as that term may be) than the grendel. Not that the grendel won't put them down, but the .270's terminal effects are very noticeable in terms of speed of kill, and wound cavity/channel.
Again, i love the grendel, and take it out more than just about anything else these days, for the obvious advantages. But, if i were paying for a hunt where it was important to me to get a sure kill.....no question where i'm going...