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need advice on load work up for 338

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  #8  
Unread 11-14-2012, 08:48 PM
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Re: need advice on load work up for 338

I'm not saying that you can't use the chrono. All I was trying to say is don't get too stuck on your ES. if you want to use the chrono while you are testing then by all means use. Just don't get to stuck on what the numbers are saying on there. If you get a load that shoots really well at 600 but the ES is a bit high, don't discount that load just because the chrono says something that you don't like.

Since you are shooting 10 shots per load, you might want to stretch this test out a few days. It will take a long time to shoot ten shots per load while allowing your barrel to cool off properly.

Good luck and keep us posted!

Post your results so others on here can see. There are a lot of guys on here with far more experience than me.
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  •   #9  
    Unread 11-15-2012, 08:46 PM
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    Re: need advice on load work up for 338

    Should i take some plywood and shade the chrono or not worry about it?
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      #10  
    Unread 11-19-2012, 08:39 PM
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    Re: need advice on load work up for 338

    Hi everone i went and shot today i took 5 loads of each of the ten i had loaded at 90 90.5 91..91.5...92...92.5 here how they shot thesr bullets were the berger 300 hybrid. Ok to my pact chrono i just got the inforered. Set up for didn' t read ony of my sighters. Almost tossed it in canal. Think i might yet but it would be more fun to give it back to pact. And put it where the sun doesnt shine. Ok. The pro chrono is years ahead of the pact because at least it works.. ok 5 shots at 90 grains gave me an es of 23. 2766 fastest 2743... 90.5 grains fastest 2801 slowest 2766 es of 35...91 grains i had one no fire. Fastest 2801 slowest 2760 .. es of 41.... 91 grains fastest 2823 slowest 2812. Es of 11 also the best group verticly 1.5 inches verticle. 91.5 grains fastest 2840. Slowest 2824 es of 16. 92 grains fastest 2855 slowest was 2812 es of 43. 92.5 grains fastest was 2873 2855 slowest was 2842 es of 31. Chamber was 4.05 oal lenght of loads taday was 4.05 also. Iam thinking of 91 grains now gona mess with seating depth .. Do u guys think iam on the right track oh yea target was 450 yards
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      #11  
    Unread 11-19-2012, 09:24 PM
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    Re: need advice on load work up for 338

    Quote:
    Originally Posted by timmyatnop View Post
    Do u guys think iam on the right track oh yea target was 450 yards
    Yes
    __________________
    Derek M.
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      #12  
    Unread 11-20-2012, 12:25 AM
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    Re: need advice on load work up for 338

    Sounds good but what were the size of your groups. Do you have pics of the groups that you can post?
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      #13  
    Unread 11-20-2012, 11:05 AM
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    Re: need advice on load work up for 338

    Groups were 3 inches verticle except for the 91 and 91.5 loads these were one inch to one. 5 inches. Verticle and all were 4 inches left to right except for the 91 and 91.5. Theses were two inches left to right one of the two was 2.5 inches left to right.
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      #14  
    Unread 11-20-2012, 12:19 PM
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    Re: need advice on load work up for 338

    Sounds like you are on the right track to me! You can re-test those two to make sure and if you want..play with the seating depth. Ten you can start verifying drops and start banging some steel! Good job.
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