After the safety briefing, we hopped right in with
zeroing our M4 carbines
. Larry was quick to point out that the M4 is a limited-distance weapon. While the M4 is capable of it, it's not a long-range precision weapon. Contrary to what some agencies believe, the M4 is not an MP5 and should not be zeroed at 25 yards. You would be on the paper approximately two inches low. This should dead on at 50 yards; shoot it to confirm. A 50-yard zero will put you nearly dead on at 200 yards (for a man-sized target). Your accurate hits at 100 yards are roughly an inch high of POA/POI and will be a touch high at 25 yards. That said, zero at 50 yards; this will give you the most versatile accuracy from your carbine.
To show what your carbine can do and to test or improve your skills, LAV uses his 4-10 Drill. This is shooting at four distances — single-position shooting at 100 yards prone, 75 yards seated, 50 yards kneeling and 25 yards standing in 1 minute, 45 seconds, 30 seconds, and 15 seconds. Fire 10 shots at each distance. You'll quickly learn trigger control and how to steady yourself, reducing the evil "wobble." During his tenure with Army Spec Ops, this was one of the operator's basic drills and is considered one of their basic skill drills. LAV feels this drill is one of the keys to being a better and consistent shooter. Having seen LAV and his protégé's from ARSOC shoot I will say it works … well.
While we were shooting at distance, LAV brought up trigger control. With a handgun, you'll see bad trigger control at close ranges. With a rifle, you'll see poor trigger control at distance. At close range having three points of contact, you can overcome wobble and slapping the trigger. At distance, you'll have a shot pattern that's not a nice tight group if you slap the trigger. Like the handgun you can use the dime drill to work on proper trigger pull.
After working on precise shooting at longer ranges, we moved back to shooting at CQB distances. At close range, you'll have to be aware of bullet offset. This is where the bullet impacts instead of where you're aiming. You can't correct this except to know that your bullet will impact approximately two inches lower than your point of aim. Period. Learn to hold it a touch high at distances of less than 25 yards. If your "zero" for point of aim/impact is correct at extremely close distances, your accuracy will be terrible as soon as you're at distances greater than 25 yards. Keep it simple. Practice at close ranges with your 50-yard zero, and you'll accurately hit your target at seven yards.
Through out this course, we covered multiple shot engagements and making each and every hit count. The key to staying on target is positive grip on the carbine to ensure that you're pulling the weapon into your shoulder. A positive grip on the forearm allows you to remove your shooting hand; the carbine should stay snug against your shoulder. This is after all a .22-caliber weapon not a super zombie killer. It has little recoil.