They are also known as the black truss markings. They provide a quick visual for the tape user and speed up the measuring process. Originally, 19.2 inches was used in metric layouts. Dividing 5 into 96 inches (8 feet) gives 19.2 inches, which yields five trusses per sheet. The black arrow in the photo to the right points directly at the black diamond located on 19.2. The red stud markings every 16 inches allow for a standard layout of six studs per 8-foot (96) section.
1 Minors under 18 must be accompanied by an adult at all times in the range and store. 2  You must be 21 years old to shoot a handgun & 18 years old to shoot a long gun without being accompanied by a parent or legal guardian.
I shoot a lot of .22 rimfire ammo for practice to keep from shooting out barrels in my service rifles and using up more limited, expensive to replace stocks of centerfire ammo. Most of my .22 practice is from target pistols indoors at 25 yards and rifle firing outdoors from 50 to 200 yards.Firing a .22 bolt rifle outdoors at 200 yards is a good simulation for long-range .30 cal. rifle practice. So, I want better than âminute of beer canâ accuracy.I desire 2-inch groups at 50 yards from a target pistol, the same at 100 yards firing prone from a bolt action target rifle, and in proportion to 200 yards. shoot a lot of .22 rimfire ammo for practice to keep from shooting out barrels in my service rifles and using up more limited, expensive to replace stocks of centerfire ammo. Most of my .22 practice is from target pistols indoors at 25 yards and rifle firing outdoors from 50 to 200 yards.