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Long Range Hunting & Shooting
I need a new rifle wanna help.. part 2 sorta..
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<blockquote data-quote="Michael Eichele" data-source="post: 8378" data-attributes="member: 1007"><p>Hey Brent,</p><p></p><p>While I cannot vouch (yet) for such a high BC in 178 AMAX, I can vouch for the 155 Palma fired from a 26" 308 in the opposite envioronment. The tests I did w/the palma bullet were at zero degrees to -10 F. The BP I used was from a pilot friend of mine and was the standard. Altittude was 600' (which is irrelevant due to BP input) Any way, I zeroed the rifle at exactly 600 yards. The 20 MOA hold over I used drilled groups perfect at 1000 yards. The calculator stated (using .450) that drop would be 250" at 1000 yards. 20 MOA = approximately 210" at 1000 yards. This is a 40" differance. A BC of .500-505 inputted into the calculator solved the "mystery" of why these loads shot so high. This test was performed repeatedly with the same results.</p><p></p><p>I am going to do some tests w/the AMAX, while I have done a little, I havent done much. I do know that The last couple of times I shot the 178 AMAX, I was using the wrong muzzle velocity and a BC of .525 The MV I was using was 2610. I have discovered in the last few days, I was mistaken. My MV is 2566. I had not chronied my loads and just fired them at extended ranges. Because most shooters agree that the BC of the 178 is .525 thats what I used. I then calculated using all conditions except for BP. I came up with 2610. They are in fact (now that I chronied them) 2566. Now either the BP was way off those 2 saturdays in a row, or the BC is higher out my 308 than I thought. Brent, scince you live by where I shoot, would you happen to know the BP on 12-6 and 11-29??</p><p></p><p>PS I also know that the 1 time I fired the AMAX at 1k they were way high, like 2.5 feet, somewhere in there. I was using an 800 yard zero and they shot that high. BP maybe?? BC, maybe. This weekend might tell the tale if I can get you to email me a BP reading saturday, or you can meet me out there same place same time. </p><p></p><p>L8r</p><p></p><p>[ 12-19-2003: Message edited by: meichele ]</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 8378, member: 1007"] Hey Brent, While I cannot vouch (yet) for such a high BC in 178 AMAX, I can vouch for the 155 Palma fired from a 26" 308 in the opposite envioronment. The tests I did w/the palma bullet were at zero degrees to -10 F. The BP I used was from a pilot friend of mine and was the standard. Altittude was 600' (which is irrelevant due to BP input) Any way, I zeroed the rifle at exactly 600 yards. The 20 MOA hold over I used drilled groups perfect at 1000 yards. The calculator stated (using .450) that drop would be 250" at 1000 yards. 20 MOA = approximately 210" at 1000 yards. This is a 40" differance. A BC of .500-505 inputted into the calculator solved the "mystery" of why these loads shot so high. This test was performed repeatedly with the same results. I am going to do some tests w/the AMAX, while I have done a little, I havent done much. I do know that The last couple of times I shot the 178 AMAX, I was using the wrong muzzle velocity and a BC of .525 The MV I was using was 2610. I have discovered in the last few days, I was mistaken. My MV is 2566. I had not chronied my loads and just fired them at extended ranges. Because most shooters agree that the BC of the 178 is .525 thats what I used. I then calculated using all conditions except for BP. I came up with 2610. They are in fact (now that I chronied them) 2566. Now either the BP was way off those 2 saturdays in a row, or the BC is higher out my 308 than I thought. Brent, scince you live by where I shoot, would you happen to know the BP on 12-6 and 11-29?? PS I also know that the 1 time I fired the AMAX at 1k they were way high, like 2.5 feet, somewhere in there. I was using an 800 yard zero and they shot that high. BP maybe?? BC, maybe. This weekend might tell the tale if I can get you to email me a BP reading saturday, or you can meet me out there same place same time. L8r [ 12-19-2003: Message edited by: meichele ] [/QUOTE]
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