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Extreme Long Range Hunting & Shooting (ELR)
New ELR bullet testing
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<blockquote data-quote="jmason" data-source="post: 924397" data-attributes="member: 10486"><p>This post is rooted here on <a href="http://forum.snipershide.com/elr-beyond-1000-yards/226701-did-some-testing-solid-today-%40-1k.html" target="_blank">sniper's hide</a> but I thought some of you guys would like to see it as well. I was lucky enough to get to shoot some new projectiles. </p><p></p><p>Today I ran some maximum safe velocity testing with the ZA 338 280.5 grain Match bullets. No accuracy testing was done at this time. All shots fired from a 338-408 Improved with a 30" barrel.</p><p></p><p>Distance to first Chronograph screen: 13'4"</p><p>Temp. 39F</p><p>Humidity 69%</p><p>Station Pressure 28.59</p><p></p><p>Based on other data I'd collected I thought 142 grains of RL-50 would be a safe place to start. Below are my sample charges and velocities.</p><p></p><p>142gr = 3278fps</p><p>147gr = 3377fps</p><p>152gr = 3479fps</p><p>154gr = 3518fps</p><p></p><p>I got a maximum velocity of 3518 w/ RL-50. The Primer was still round around the edges but some firing pin hole puckering was becoming evident. Given this is well over 100 FPS faster than I could run other 300 gr conventional, and solid bullets, I saw no reason to push. I Highly doubt I'm burning all the powder I'm putting through it. I feel pretty strongly a longer barrel would offer some increase on the top end.</p><p></p><p>Without any other test firing I simply loaded what I felt was the maximum safe powder charge(not knowing if it would produce an acceptable ES). I chose 153 Grains of RL-50 for 6 shots. It produced an ES of 8 and avg velocity of 3508 fps. Even though these bullets were not designed for my barrel they did produce sub MOA groups at 100 yards. </p><p></p><p>338 MK--280.5 ZA--325 rock mountain</p><p><a href="https://www.dropbox.com/sh/80y90zuwjy23tu1/9NhAxk_f0B/2014-02-08%2014.58.02.jpg" target="_blank">https://www.dropbox.com/sh/80y90zuwjy23tu1/9NhAxk_f0B</a></p><p><a href="https://www.dropbox.com/sh/80y90zuwjy23tu1/9NhAxk_f0B/2014-02-08%2014.58.02.jpg" target="_blank">/2014-02-08%2014.58.02.jpg</a></p><p></p><p><a href="https://www.dropbox.com/sh/80y90zuwjy23tu1/TR3VKjZA2u/2014-02-08%2014.58.13.jpg" target="_blank">https://www.dropbox.com/sh/80y90zuwjy23tu1/TR3VKjZA2u/2014-02-08 14.58.13.jpg</a></p><p></p><p><a href="https://www.dropbox.com/sh/80y90zuwjy23tu1/e-XOT-9O-u/2014-02-08%20loaded_round.jpg" target="_blank">https://www.dropbox.com/sh/80y90zuwjy23tu1/e-XOT-9O-u/2014-02-08 loaded_round.jpg</a></p><p></p><p></p><p><a href="https://www.dropbox.com/sh/80y90zuwjy23tu1/ZPqlZyQoku/2014-02-09%20Accuracy_testing.jpg" target="_blank">https://www.dropbox.com/sh/80y90zuwjy23tu1/ZPqlZyQoku/2014-02-09 Accuracy_testing.jpg</a></p><p></p><p><a href="https://www.dropbox.com/sh/80y90zuwjy23tu1/MmysZ5gYmb/2014-02-09%20100_yard_range.jpg" target="_blank">https://www.dropbox.com/sh/80y90zuwjy23tu1/MmysZ5gYmb/2014-02-09 100_yard_range.jpg</a></p><p></p><p><img src="https://www.dropbox.com/sh/80y90zuwjy23tu1/9NhAxk_f0B/2014-02-08%2014.58.02.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="jmason, post: 924397, member: 10486"] This post is rooted here on [URL="http://forum.snipershide.com/elr-beyond-1000-yards/226701-did-some-testing-solid-today-%40-1k.html"]sniper's hide[/URL] but I thought some of you guys would like to see it as well. I was lucky enough to get to shoot some new projectiles. Today I ran some maximum safe velocity testing with the ZA 338 280.5 grain Match bullets. No accuracy testing was done at this time. All shots fired from a 338-408 Improved with a 30" barrel. Distance to first Chronograph screen: 13'4" Temp. 39F Humidity 69% Station Pressure 28.59 Based on other data I'd collected I thought 142 grains of RL-50 would be a safe place to start. Below are my sample charges and velocities. 142gr = 3278fps 147gr = 3377fps 152gr = 3479fps 154gr = 3518fps I got a maximum velocity of 3518 w/ RL-50. The Primer was still round around the edges but some firing pin hole puckering was becoming evident. Given this is well over 100 FPS faster than I could run other 300 gr conventional, and solid bullets, I saw no reason to push. I Highly doubt I'm burning all the powder I'm putting through it. I feel pretty strongly a longer barrel would offer some increase on the top end. Without any other test firing I simply loaded what I felt was the maximum safe powder charge(not knowing if it would produce an acceptable ES). I chose 153 Grains of RL-50 for 6 shots. It produced an ES of 8 and avg velocity of 3508 fps. Even though these bullets were not designed for my barrel they did produce sub MOA groups at 100 yards. 338 MK--280.5 ZA--325 rock mountain [URL="https://www.dropbox.com/sh/80y90zuwjy23tu1/9NhAxk_f0B/2014-02-08%2014.58.02.jpg"]https://www.dropbox.com/sh/80y90zuwjy23tu1/9NhAxk_f0B[/URL] [URL="https://www.dropbox.com/sh/80y90zuwjy23tu1/9NhAxk_f0B/2014-02-08%2014.58.02.jpg"]/2014-02-08%2014.58.02.jpg[/URL] [URL]https://www.dropbox.com/sh/80y90zuwjy23tu1/TR3VKjZA2u/2014-02-08%2014.58.13.jpg[/URL] [URL]https://www.dropbox.com/sh/80y90zuwjy23tu1/e-XOT-9O-u/2014-02-08%20loaded_round.jpg[/URL] [URL]https://www.dropbox.com/sh/80y90zuwjy23tu1/ZPqlZyQoku/2014-02-09%20Accuracy_testing.jpg[/URL] [URL]https://www.dropbox.com/sh/80y90zuwjy23tu1/MmysZ5gYmb/2014-02-09%20100_yard_range.jpg[/URL] [IMG]https://www.dropbox.com/sh/80y90zuwjy23tu1/9NhAxk_f0B/2014-02-08%2014.58.02.jpg[/IMG] [/QUOTE]
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