Well, because the ballistic coefficient of a BPC bullet is very low when compared to modern ammunition (.380 to about .420), wind drift is a major concern. Let s take a look at just how much wind can affect the flight of the bullet when it is blowing at 5, 10, 15, and 20 miles per hour.
Inflammation of the joints (arthritis) of the spine sometimes causes back pain. Osteoarthritis is the common form of arthritis and usually occurs in older people. Ankylosing spondylitis is another form of arthritis that can occur in young adults and which causes pain and stiffness in the lower back.
Nerves in the low back supply sensation and power the muscles in the pelvis, legs, and feet. Most acute low back pain results from injury to the muscles, ligaments, joints, or discs. The body also reacts to injury by mobilizing an inflammatory healing response. While inflammation sounds minor, it can cause severe pain.