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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Tested! 6.5mm 142gr Accubond Long Range vs the 142 gr Sierra Matchking.
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<blockquote data-quote="Konrad.INc" data-source="post: 1144997" data-attributes="member: 86301"><p>Hello,</p><p></p><p>I just wanted to let everyone know what I found out about the new 142gr Long range accubonds and how I have found them to compare to the Sierra Matchkings so far. I was fortunate enough to pick up 3 boxes of the new accubonds when the new hunting department opened at a store in Coeurdalene ID. I am focusing on BC and some velocity in this post, accuracy will come later. I only had 25 pieces of new Norma Brass available to do this testing so by no means is it complete but I think there is enough data to prove my final point. </p><p></p><p>Tikka Sporter in 260 Rem with the Factory 24 inch barrel 1:8 twist</p><p>Leupold VX-3 6.5-20x50 Long Range Target in Warne Rings</p><p>Velocities were measured at 10feet from the Muzzle with a Chrony Chronograph. </p><p>Temp 56F</p><p>Altitude ~300ft MSL</p><p>Humidity: High (it's Oregons Willamate Valley in December)</p><p>Sky conditions: Cloudy (it's Oregons willamate Valley in December)</p><p>Wind: 1-2mph left to right</p><p>New Norma Brass</p><p>Winchester large rifle primers</p><p></p><p>H4350 velocities seated at 2.850 OAL</p><p>43.0gr -2683fps</p><p>43.5gr -2700fps</p><p>44.0gr -2724fps</p><p>44.5gr -2753fps</p><p>45.0gr -2780fps</p><p></p><p>IMR7828SSC velocities seated at 2.850 OAL</p><p>45.0gr -2578fps</p><p>45.5gr -2600fps</p><p>46.0gr -2628fps</p><p>46.5gr -2682fps</p><p>47.0gr -2695fps</p><p></p><p>The H4350 loads closely matched what I see in load manuals for velocity, but that was not the case with the 7828SSC. The nosler manual 7 states I should be pushing over 2800 fps but I didn't get anywhere near that. </p><p></p><p>I checked point of impact with a 5 shot group at 100 yards loaded with 44.5gr H4350 and the long range Accubonds seated at 2.850. They were right on center and the velocities were 2753, 2763, 2751, 2773, 2733 with a 1 MOA group. The very next target I tried my gold standard load of 44.5Gr H4350 and 142gr Sierra Matchkings loaded at 2.830 OAL with Remington brass. All 5 were in the center of the target with a .5 MOA Group. I averaged 2710fps which happens to be my validated velocity with my Matchking load. I have won a few matches with this load and rifle combo so I'm confident that data is right. </p><p></p><p>Now here is the interesting part, I went back to 600yards and shot two 5 shot groups back to back to see how the BC compares. One group was 44.5gr H4350 with the new Nosler Long Range Accubonds and the second group was 44.5gr of H4350 and the 142gr Sierra Matchkings. I dialed up 13.5 minutes for both groups. My only goal here was to see how the bullet drop compares. The listed BC for the accubonds is .719 and is .595 for the Matchkings. (Yes I know it changes with velocity) however because the long range accubonds were chronographing faster and supposedly have a higher BC I fully expected them to have less bullet drop than my Matchking load. </p><p></p><p>Drum roll.</p><p></p><p>They weren't. The bullet drop at 600 yards was nearly identical. I'm curious to know if there is anyone else out there that have tested the 142gr Long Range Accubonds and if so what are your results? I'm not saying anything bad about Nosler but I would like to understand how their data and my results are so different.</p></blockquote><p></p>
[QUOTE="Konrad.INc, post: 1144997, member: 86301"] Hello, I just wanted to let everyone know what I found out about the new 142gr Long range accubonds and how I have found them to compare to the Sierra Matchkings so far. I was fortunate enough to pick up 3 boxes of the new accubonds when the new hunting department opened at a store in Coeurdalene ID. I am focusing on BC and some velocity in this post, accuracy will come later. I only had 25 pieces of new Norma Brass available to do this testing so by no means is it complete but I think there is enough data to prove my final point. Tikka Sporter in 260 Rem with the Factory 24 inch barrel 1:8 twist Leupold VX-3 6.5-20x50 Long Range Target in Warne Rings Velocities were measured at 10feet from the Muzzle with a Chrony Chronograph. Temp 56F Altitude ~300ft MSL Humidity: High (it's Oregons Willamate Valley in December) Sky conditions: Cloudy (it's Oregons willamate Valley in December) Wind: 1-2mph left to right New Norma Brass Winchester large rifle primers H4350 velocities seated at 2.850 OAL 43.0gr -2683fps 43.5gr -2700fps 44.0gr -2724fps 44.5gr -2753fps 45.0gr -2780fps IMR7828SSC velocities seated at 2.850 OAL 45.0gr -2578fps 45.5gr -2600fps 46.0gr -2628fps 46.5gr -2682fps 47.0gr -2695fps The H4350 loads closely matched what I see in load manuals for velocity, but that was not the case with the 7828SSC. The nosler manual 7 states I should be pushing over 2800 fps but I didn't get anywhere near that. I checked point of impact with a 5 shot group at 100 yards loaded with 44.5gr H4350 and the long range Accubonds seated at 2.850. They were right on center and the velocities were 2753, 2763, 2751, 2773, 2733 with a 1 MOA group. The very next target I tried my gold standard load of 44.5Gr H4350 and 142gr Sierra Matchkings loaded at 2.830 OAL with Remington brass. All 5 were in the center of the target with a .5 MOA Group. I averaged 2710fps which happens to be my validated velocity with my Matchking load. I have won a few matches with this load and rifle combo so I'm confident that data is right. Now here is the interesting part, I went back to 600yards and shot two 5 shot groups back to back to see how the BC compares. One group was 44.5gr H4350 with the new Nosler Long Range Accubonds and the second group was 44.5gr of H4350 and the 142gr Sierra Matchkings. I dialed up 13.5 minutes for both groups. My only goal here was to see how the bullet drop compares. The listed BC for the accubonds is .719 and is .595 for the Matchkings. (Yes I know it changes with velocity) however because the long range accubonds were chronographing faster and supposedly have a higher BC I fully expected them to have less bullet drop than my Matchking load. Drum roll. They weren't. The bullet drop at 600 yards was nearly identical. I'm curious to know if there is anyone else out there that have tested the 142gr Long Range Accubonds and if so what are your results? I'm not saying anything bad about Nosler but I would like to understand how their data and my results are so different. [/QUOTE]
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Tested! 6.5mm 142gr Accubond Long Range vs the 142 gr Sierra Matchking.
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