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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New 30/375 wildcat
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<blockquote data-quote="elkaholic" data-source="post: 703296" data-attributes="member: 13833"><p>Hi guys!</p><p>I'm getting ready to test out "Mr Quigley" on some long range elk next week and have done a considerable amount of testing to prepare. I wanted to post the following, especially for some of you who may be just getting in to long range. I know that a lot of you already are aware of this, but the pics are pretty revealing. I will likely be shooting at approx. 1100 yards, and, as you know, everything MUST be calculated correctly for this to work. The subject here is "cold bore" vs a warmed up barrel which is what happens when all of us fire a group to zero. I have seen very few rifles which will group the same on the first shot as in follow up shots. Since most of us don't like shooting a warning shot to warm up the barrel, we must know where poi is at cold bore.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /> This is also crucial for follow up shots if necessary. This pic clearly shows the affect would be 5 1/2 to 6 inches difference at 1100 yards. My test was to zero dead on at 100yards by firing a 4 shot group and then shoot on consecutive mornings firing the cold bore shot at one bull and the follow up shot at another. I chose 9:00 a.m. so the sun angle would be the same. As you can see, the groups were good and repeatable, but 1/2 moa different. If I were to just go with my zero, my first cold bore shot at an elk at 1100 yards would be nearly 6" low. This alone would not cause a miss, but you can't start out with a 6" error with all the other variables. This was with my 30/375 S.I. and 208 SXR's fired at 3010 fps.[ATTACH]13586[/ATTACH]</p></blockquote><p></p>
[QUOTE="elkaholic, post: 703296, member: 13833"] Hi guys! I'm getting ready to test out "Mr Quigley" on some long range elk next week and have done a considerable amount of testing to prepare. I wanted to post the following, especially for some of you who may be just getting in to long range. I know that a lot of you already are aware of this, but the pics are pretty revealing. I will likely be shooting at approx. 1100 yards, and, as you know, everything MUST be calculated correctly for this to work. The subject here is "cold bore" vs a warmed up barrel which is what happens when all of us fire a group to zero. I have seen very few rifles which will group the same on the first shot as in follow up shots. Since most of us don't like shooting a warning shot to warm up the barrel, we must know where poi is at cold bore.:D This is also crucial for follow up shots if necessary. This pic clearly shows the affect would be 5 1/2 to 6 inches difference at 1100 yards. My test was to zero dead on at 100yards by firing a 4 shot group and then shoot on consecutive mornings firing the cold bore shot at one bull and the follow up shot at another. I chose 9:00 a.m. so the sun angle would be the same. As you can see, the groups were good and repeatable, but 1/2 moa different. If I were to just go with my zero, my first cold bore shot at an elk at 1100 yards would be nearly 6" low. This alone would not cause a miss, but you can't start out with a 6" error with all the other variables. This was with my 30/375 S.I. and 208 SXR's fired at 3010 fps.[ATTACH]13586.vB[/ATTACH] [/QUOTE]
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New 30/375 wildcat
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