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Load Development Ruger Precision Rifle .243
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<blockquote data-quote="jdmecomber" data-source="post: 1285497" data-attributes="member: 94549"><p>You hear a lot these days about Extreme Powders or temperature sensitive powder. I think its hard for the average shooter to get the fancy equipment, time, energy or money to really try and figure out everything there is with long range shooting. </p><p></p><p>Today Russ and I completed a test that anyone with a decent chronograph can accomplish. We used a Magneto</p><p></p><p>The conditions outside were 33 degrees for all the testing. The ammo was frozen in our kitchen freezers which is usually around 0 degrees. Room temperature for me is around 67 degrees, saving a little money <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>We are both shooting the Savage 7mm rem mag in the LRH with IMR4350 and the 168 Berger Classics. I shoot Federal Match 215 and Russ shoots the regular 215.</p><p></p><p>We shot these combinations. </p><p>Room temperature gun with frozen ammo</p><p>Room temperature ammo with a frozen gun</p><p>Frozen ammo with a frozen gun</p><p></p><p>Russ' gun sat outside for about 4 hours</p><p></p><p> Frozen gun/Frozen ammo: 3 round average FPS 2916 </p><p> Frozen gun/Room ammo: 6 round average FPS 2964</p><p></p><p>Joes Gun </p><p> Room Gun/Frozen ammo: 3 round average FPS 2822</p><p> Which is close to my average velocity I use for my ballistic</p><p> program of 2818 FPs</p><p> </p><p> My gun froze outside for 6 hours</p><p> Frozen gun/room ammo: 3 round average FPS 2810 FPS</p><p> Frozen gun/frozen ammo: 3 round average FPS 2793 FPS</p><p></p><p>The results on my gun compared to my zero data 64 degrees 64 ammo degrees was an average of 2818. The gun at 33 degrees with 0 degree ammo was on average only 25 FPS slower, I think that is pretty acceptable. When I shot my elk last year, I adjusted my FPS 20 slower, It was around 20 degrees and my gun was frozen in the tent with me.</p><p></p><p>I think its pretty interesting that Russ had a much more extreme spread. I wonder if the match vs regular primer could do it? If anyone has any ideas, let us know. </p><p></p><p>Thanks Joe & Russ</p><p></p><p>The 7mm is the only gun I shoot IMR with. I will test an Extreme Powder with it soon.</p></blockquote><p></p>
[QUOTE="jdmecomber, post: 1285497, member: 94549"] You hear a lot these days about Extreme Powders or temperature sensitive powder. I think its hard for the average shooter to get the fancy equipment, time, energy or money to really try and figure out everything there is with long range shooting. Today Russ and I completed a test that anyone with a decent chronograph can accomplish. We used a Magneto The conditions outside were 33 degrees for all the testing. The ammo was frozen in our kitchen freezers which is usually around 0 degrees. Room temperature for me is around 67 degrees, saving a little money :) We are both shooting the Savage 7mm rem mag in the LRH with IMR4350 and the 168 Berger Classics. I shoot Federal Match 215 and Russ shoots the regular 215. We shot these combinations. Room temperature gun with frozen ammo Room temperature ammo with a frozen gun Frozen ammo with a frozen gun Russ' gun sat outside for about 4 hours Frozen gun/Frozen ammo: 3 round average FPS 2916 Frozen gun/Room ammo: 6 round average FPS 2964 Joes Gun Room Gun/Frozen ammo: 3 round average FPS 2822 Which is close to my average velocity I use for my ballistic program of 2818 FPs My gun froze outside for 6 hours Frozen gun/room ammo: 3 round average FPS 2810 FPS Frozen gun/frozen ammo: 3 round average FPS 2793 FPS The results on my gun compared to my zero data 64 degrees 64 ammo degrees was an average of 2818. The gun at 33 degrees with 0 degree ammo was on average only 25 FPS slower, I think that is pretty acceptable. When I shot my elk last year, I adjusted my FPS 20 slower, It was around 20 degrees and my gun was frozen in the tent with me. I think its pretty interesting that Russ had a much more extreme spread. I wonder if the match vs regular primer could do it? If anyone has any ideas, let us know. Thanks Joe & Russ The 7mm is the only gun I shoot IMR with. I will test an Extreme Powder with it soon. [/QUOTE]
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