Rounds Size (mm) kg/metre 6 0.251 8 0.405 10 0.632 12 0.91 14 1.241 16 1.62 18 2.04 20 2.522 22 3.055 24 3.639 27 4.607 30 5.689 33 6.822 36 8.19 39 9.615 42 11.173 45 12.813 48 14.555 50 15.785 55 19.3 60 22.8 65 26.9 70 31.1 75 35.6 80 41 90 … Continue reading ROUNDS