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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm 140gr Accubond for Elk
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<blockquote data-quote="budlight" data-source="post: 62466" data-attributes="member: 2939"><p>For shooting with my 7mm STW I only use 175 BT's and I've kind of settled into the Barnes - X for hunting. After thinking about this that Barnes 150 might be a great choice also</p><p></p><p>When you get into the BC of a bullet. The 175 starting at a slower speed will be going faster than the non BT 140 gr. before 400 yards. 175's weigh @25% more than a 140 the energy of the 175 going even just the same speed is terrific.</p><p></p><p>.284 dia. (7mm) 140 gr. SBT .284 140 .248 .416 @ 2400 fps and above</p><p>.418 between 2400 and 1800 fps</p><p>.423 @ 1800 fps and below </p><p></p><p>7mm</p><p>Diameter Weight Description S.D. B.C. CAT# </p><p>.284" 150gr. "X" BT .266 .529 28428 </p><p>.284" 175gr. "X" FB .310 .530 28445 </p><p></p><p>Bullet Name Diameter inches Weight grains Sectional Density Ballistic Coefficients </p><p>.284 dia. (7mm) 175 gr. SBT .284 175 .310 .533 @ 2500 fps and above</p><p>.538 between 2500 and 2000 fps</p><p>.560 @ 2000 fps and below </p><p></p><p>*********************************************</p><p>This 140 grain BT has a better bc.</p><p>Range Velocity Energy Momentum Drop Windage Lead Time </p><p>(yards) (ft/sec) (ft-lbs) (lbs-sec) (inches) (inches) (inches) (sec) </p><p>0 3408.7 3611.8 2.12 -1.5 -0.0 0.0 0.000 </p><p>100 3155.3 3094.8 1.96 2.7 0.6 0.0 0.092 </p><p>200 2915.6 2642.5 1.81 3.4 2.5 0.0 0.190 </p><p>300 2688.4 2246.7 1.67 -0.0 5.9 0.0 0.298 </p><p>400 2472.8 1900.8 1.54 -8.2 10.9 0.0 0.414 </p><p>500 2268.4 1599.6 1.41 -22.2 17.7 0.0 0.541 </p><p>600 2073.4 1336.3 1.29 -42.9 26.6 0.0 0.679 </p><p>700 1888.2 1108.2 1.17 -71.7 37.8 0.0 0.831 </p><p>800 1714.4 913.7 1.07 -110.3 51.7 0.0 0.998 </p><p>900 1553.2 749.9 0.97 -160.7 68.6 0.0 1.182 </p><p>1000 1406.9 615.3 0.87 -225.7 88.8 0.0 1.385 </p><p></p><p>This is 175 530 BC</p><p></p><p>Range Velocity Energy Momentum Drop Windage Lead Time </p><p>(yards) (ft/sec) (ft-lbs) (lbs-sec) (inches) (inches) (inches) (sec) </p><p>0 3106.4 3749.4 2.41 -1.5 -0.0 0.0 0.000 </p><p>100 2919.2 3311.2 2.27 3.3 0.5 0.0 0.100 </p><p>200 2739.7 2916.5 2.13 3.9 2.2 0.0 0.206 </p><p>300 2567.4 2561.3 2.00 -0.0 5.1 0.0 0.319 </p><p>400 2402.2 2242.2 1.87 -9.2 9.4 0.0 0.440 </p><p>500 2243.8 1956.2 1.74 -24.5 15.2 0.0 0.569 </p><p>600 2090.7 1698.4 1.62 -46.7 22.5 0.0 0.708 </p><p>700 1943.7 1467.9 1.51 -76.9 31.8 0.0 0.857 </p><p>800 1803.5 1263.8 1.40 -116.2 43.0 0.0 1.017 </p><p>900 1670.7 1084.5 1.30 -166.3 56.4 0.0 1.190 </p><p>1000 1545.7 928.4 1.20 -228.9 72.3 0.0 1.377</p></blockquote><p></p>
[QUOTE="budlight, post: 62466, member: 2939"] For shooting with my 7mm STW I only use 175 BT's and I've kind of settled into the Barnes - X for hunting. After thinking about this that Barnes 150 might be a great choice also When you get into the BC of a bullet. The 175 starting at a slower speed will be going faster than the non BT 140 gr. before 400 yards. 175's weigh @25% more than a 140 the energy of the 175 going even just the same speed is terrific. .284 dia. (7mm) 140 gr. SBT .284 140 .248 .416 @ 2400 fps and above .418 between 2400 and 1800 fps .423 @ 1800 fps and below 7mm Diameter Weight Description S.D. B.C. CAT# .284" 150gr. "X" BT .266 .529 28428 .284" 175gr. "X" FB .310 .530 28445 Bullet Name Diameter inches Weight grains Sectional Density Ballistic Coefficients .284 dia. (7mm) 175 gr. SBT .284 175 .310 .533 @ 2500 fps and above .538 between 2500 and 2000 fps .560 @ 2000 fps and below ********************************************* This 140 grain BT has a better bc. Range Velocity Energy Momentum Drop Windage Lead Time (yards) (ft/sec) (ft-lbs) (lbs-sec) (inches) (inches) (inches) (sec) 0 3408.7 3611.8 2.12 -1.5 -0.0 0.0 0.000 100 3155.3 3094.8 1.96 2.7 0.6 0.0 0.092 200 2915.6 2642.5 1.81 3.4 2.5 0.0 0.190 300 2688.4 2246.7 1.67 -0.0 5.9 0.0 0.298 400 2472.8 1900.8 1.54 -8.2 10.9 0.0 0.414 500 2268.4 1599.6 1.41 -22.2 17.7 0.0 0.541 600 2073.4 1336.3 1.29 -42.9 26.6 0.0 0.679 700 1888.2 1108.2 1.17 -71.7 37.8 0.0 0.831 800 1714.4 913.7 1.07 -110.3 51.7 0.0 0.998 900 1553.2 749.9 0.97 -160.7 68.6 0.0 1.182 1000 1406.9 615.3 0.87 -225.7 88.8 0.0 1.385 This is 175 530 BC Range Velocity Energy Momentum Drop Windage Lead Time (yards) (ft/sec) (ft-lbs) (lbs-sec) (inches) (inches) (inches) (sec) 0 3106.4 3749.4 2.41 -1.5 -0.0 0.0 0.000 100 2919.2 3311.2 2.27 3.3 0.5 0.0 0.100 200 2739.7 2916.5 2.13 3.9 2.2 0.0 0.206 300 2567.4 2561.3 2.00 -0.0 5.1 0.0 0.319 400 2402.2 2242.2 1.87 -9.2 9.4 0.0 0.440 500 2243.8 1956.2 1.74 -24.5 15.2 0.0 0.569 600 2090.7 1698.4 1.62 -46.7 22.5 0.0 0.708 700 1943.7 1467.9 1.51 -76.9 31.8 0.0 0.857 800 1803.5 1263.8 1.40 -116.2 43.0 0.0 1.017 900 1670.7 1084.5 1.30 -166.3 56.4 0.0 1.190 1000 1545.7 928.4 1.20 -228.9 72.3 0.0 1.377 [/QUOTE]
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7mm 140gr Accubond for Elk
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