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.
Back pain (when it's really bad) is debilitating and life altering. It can affect your ability to move, sleep and even think. There are many causes of back pain, but remember that pain levels are not always positively correlated with the degree of seriousness.. Get a referral for physiotherapy. If your back pain is recurring (chronic) and caused by weak spinal muscles, poor posture or degenerative conditions such as osteoarthritis, then you need to consider some form of rehabilitation.