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<blockquote data-quote="robbobsam" data-source="post: 437025" data-attributes="member: 25432"><p>Hiya Guys,</p><p></p><p>Been playing with a new load today and I just cannot fathom what is going on.</p><p></p><p>Rifle is a factory Tikka T3 Super Varmint in .243 with a 1 in 10, 20" long barrel.</p><p></p><p><strong>87 grain VMax with 44 grains of H414</strong></p><p>At 100yds I am getting a touching group.</p><p>At 200yds I am getting no verticle spread what so ever but 1.5 inches of horizontal spread.</p><p>I am also getting and ES and SD of 50 and 26 respectively.</p><p>Velocity is between 3075 and 3125.</p><p></p><p><strong>87 grain VMax with 43.5 grains of H414</strong></p><p>The group is roughly the same at 100 and 200 (.75") and the ES and SD is still about 50 and 25 respectively.</p><p>Velocity is between 3040 and 3090.</p><p>No worrying verticle spread at 100 or 200, nice groups (.75").</p><p></p><p></p><p>With the 44grain load I have had some really good shots at some extended ranges but at 200yds today when looked at closely I was getting really strange horizontal spread.</p><p></p><p>The wind all day has been less than 3mph and constant.</p><p></p><p>Is it normal for a 100yds load to be pants at 200yds then great at 700yds ??? or was the 700yd hare just a fluke ??? The evidence is that the 43.5 grains is a more consistent load and is looking better for my long range work.</p><p></p><p>Is my reasoning here correct or have I missed something ???</p><p></p><p>I expected a slightly faster velocity for a good .243 load but could the 20" barrel being having a detrimental effect on the velocity.</p><p></p><p>Your thoughts on the way forward would be appreciated.</p></blockquote><p></p>
[QUOTE="robbobsam, post: 437025, member: 25432"] Hiya Guys, Been playing with a new load today and I just cannot fathom what is going on. Rifle is a factory Tikka T3 Super Varmint in .243 with a 1 in 10, 20" long barrel. [B]87 grain VMax with 44 grains of H414[/B] At 100yds I am getting a touching group. At 200yds I am getting no verticle spread what so ever but 1.5 inches of horizontal spread. I am also getting and ES and SD of 50 and 26 respectively. Velocity is between 3075 and 3125. [B]87 grain VMax with 43.5 grains of H414[/B] The group is roughly the same at 100 and 200 (.75") and the ES and SD is still about 50 and 25 respectively. Velocity is between 3040 and 3090. No worrying verticle spread at 100 or 200, nice groups (.75"). With the 44grain load I have had some really good shots at some extended ranges but at 200yds today when looked at closely I was getting really strange horizontal spread. The wind all day has been less than 3mph and constant. Is it normal for a 100yds load to be pants at 200yds then great at 700yds ??? or was the 700yd hare just a fluke ??? The evidence is that the 43.5 grains is a more consistent load and is looking better for my long range work. Is my reasoning here correct or have I missed something ??? I expected a slightly faster velocity for a good .243 load but could the 20" barrel being having a detrimental effect on the velocity. Your thoughts on the way forward would be appreciated. [/QUOTE]
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