I want to systematically explore air pressure topics so that we all have common nomenclature and a basic understanding of measurement and reporting systems. We will start with a general discussion of air pressure, definition of terms, measurement devices, and then finish with some alternative ways to use pressure data when calculating ballistics.
Rifle cartridges — for reasons unbeknownst to me — possess a sort of magical quality. The sort shared by a stray puppy, in that once they are brought into the home, they become family. Make a disparaging remark about someones beloved cartridge of choice, and you will see what I mean.
I learned to hunt and shoot from my uncles. All but one, farmers. Like most farmers or ranchers, they had a connection to the land that few can grasp, unless they were raised in similar circumstances. Naturally, they loved to hunt, and fortunately for me, passed that love on to their nephew.
Long range hunting is a term that often elicits responses of admiration and joy, or scorn and disdain. Admittedly, for a long time, my own feelings fell largely into the latter categories. I have always …
If you’ve been shooting long enough, you’ve seen someone get kissed in the forehead by a recoiling rifle scope, or maybe it’s even happened to you. There are a few factors that lead to this unfortunate and totally unnecessary incident. Improper rifle setup and improper eye-relief come to mind immediately. But, in my professional experience, the bigger culprit is almost always improper recoil management, which is a direct result of not learning and applying the fundamentals of marksmanship properly.
Imagine if the key to success in the mountains is your lungs. Simple enough, right? Breath work is an overlooked fundamental skill when it comes to shooting. Unfortunately, “Break the trigger at the natural respiratory pause” is about as in-depth as people go. At 10,000 feet of elevation with a small house on your back, those natural respiratory pauses are about as short as a tinder fling.
Unless you’ve been living under a rock, you’ve likely noticed the 6.5’s have taken the shooting world by storm in recent years. Touting long, heavy for caliber, high ballistic-coefficient (BC) bullets, long-range competitors and hunters alike have reaped the benefits of the various cartridges designed around this caliber. Most recently the 6.5 Creedmoor, developed over a decade ago, has become one of the top-selling cartridges in North America.
Before you come to blows with your buddies over who has the “Best” rifle, you need to understand two acronyms: bee-cee and em-vee, more commonly seen as BC and MV. These stand for Ballistic Coefficient and Muzzle Velocity. They and they alone determine which rifle/cartridge/bullet combination will yield the best trajectory. They also contribute significantly to POWER, more accurately referred to as terminal kinetic energy.