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willhunt4coues

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Posts posted by willhunt4coues


  1. 1/8 of a turn will be too much. When bumpiing you will be doing JUST THAT BUMPING. All dies are different. I noticed on mine I made little marks at 1/16" at the bottom of the die. Each 1/16" was about .001 bumping so you BARELY even turn the die.

    I tighten my lock ring then lock the lock ring down then I size, if not right loosen lock ring and barely turn 1/16" then tighten lock ring then re-tighten the die. keep doing this till you get a bump.

    I take all my fired brass and see if any are tight in chamber if so take note of the CBTD (cartridge base to datum) usually this will be the same number over and over letting you know your chamber CBTD. Then set in Die to only BUMP .002 to .003. I have found .002 is VERY accurate and every round chambers perfectly. Watch some videos online to understand better. I will try and find some for you.


  2. I knew you guys were not arguing. Sometimes I can not put my thoughts out like I mean to say like .308 did with the Fact quotes. I really don't factor in Coriolis unless I get past 1000 which is not much. Last time I did shout out at 1200 I had a 4" group and stopped there,,, I did not want it to get worse,,,LOL. Oh and a perfect bulls eye in 8 mph winds. I was impressed and probably could not do that again on a calm day.

     

    I really do not see myself shooting past 800 while hunting and 800 is pushing it because I know I usually can get closer. The only reason I would take a shot at 800 on a Coues is if he was about to top a hill, no wind, and all the stars aligned. I have faith I would hit but man could not live with myself if I did miss.


  3.  

     

    Everyone north of the equator the shot will always be right no matter which way you are facing due to coriolis.

    That is not exactly accurate. (pun intended) Coriolis is pretty complicated when it comes to figuring exact displacement of a shot. For example... it has more of an effect near the equator than it would near a pole (North or South), a shot directly north or south will print substantially more movement then one fired directly east or west.

     

    Spin drift is more of a constant, but can change with altitude/air density.

     

    I feel when speaking about the vast majority of "long range shooters" .3 MOA deviation at ranges of or exceeding 1000 yds would be EXTREMELY hard to pin down to one culprit or eliminate. An even slightly canted scope or rifle could easily be responsible for 1/2 MOA deviation, not to mention the multitude of other factors like wind, mirage, air density, spin drift, etc, or a loose nut behind the trigger.

     

    If a guy controls what he can, and coriolis was the only thing unaccounted for then he will likely hit close enough in any hunting situation. I watch lots of long range hunting shots being made (youtube, DVDs, and TV) where coriolis is the least of the guys worries.

     

    I guess what I am trying to say is if you do your due diligence at the range and at the loading bench, coriolis will not effect anything but serious extreme range shooting.

     

    BIGBROWNS, Thanks for posting. I hope you get that last little bit worked out and put the hammer on a bear!

    A few key points regarding the Coriolis effect.

     

    Fact: There is a greater horizontal effect the closer you get to the poles.

     

    Fact: The horizontal effects become less as you get closer to the equator.

     

    Fact: Shots east and west yield a vertical component.

     

    Fact: Projectiles fired in the Northern Hemisphere will always appear to drift right regardless of direction of fire and left in the Southern Hemisphere.

     

    Fact: shots north and south show nearly the same horizontal deviation as those east and west.

     

    If you were 500 yards south of the equator shooting across it to a target 500 yards north of the equator, there would be zero effect.

     

    This is what I was meaning in my first post

    Fact: Projectiles fired in the Northern Hemisphere will always appear to drift right regardless of direction of fire and left in the Southern Hemisphere.

     

    My creedmoor like other have said at most HUNTING DISTANCES will not drift much if any at all. But at those target shots PAST 1300 oh ya.


  4. I love that you can actually hold it and range out to 1500 yards JUST HOLDING IT. Put it on a tripod and I have reached 2400 with it.

     

    This rangefinder is the BEST investment for any long range hunter/shooter. It is very accurate.

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  5. IMR powders are usually NOT temperature stable. It will say if it is or isn't. Hogdon extreme line usually ARE temperature stable. Shooting long range gets tricky when if you chrono your load in summer will be one speed and will be completely different usually lower in winter being that your FPS can change DRASTICALLY. So lets say I use an IMR 4895 in a .308 165gn bthp. In summer I may get 2600 fps but in winter 2500 fps. Sometimes it will change a lot and sometimes it will be very little. The Hogdon line no matter what temp you are in will still be the same. I did this test last year with a .308 and the IMR 4895 and between 25 degrees it changed 40 fps. So needless to say the IMR 4895 is the worst. If you are shooting short range then this really does not matter depending on range.

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