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162 sst b.c.

 
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  #8  
Old 08-30-2011, 09:04 PM
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Re: 162 sst b.c.

Scope is a Vortex Viper that has spot on tracking. I would like to shoot it through another chrono and see what it said. According to hodgdon, at 67.6 grains, I should be running a little less than 2800. The speeds that my chrono has said has worked with all my other guns. Don't Know but I was 8 inches low at 600, moved up 1.5 moa and shot a 2.38" group in the bull.
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  #9  
Old 08-30-2011, 09:45 PM
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Re: 162 sst b.c.

What brand of brass and primer are you using, and what is your barrel length and coal? 67.6grns of H1000 is like a reduced recoil load if your close to the lands you should be around 71-72grns and over 3000 fps in a 26" barrel or around 2950 in a 24".
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  #10  
Old 08-31-2011, 09:07 AM
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Re: 162 sst b.c.

Fed 215 primers, 24" tube, loaded on the lands. With this bullet/barrel combo, my speed topped out at 2950 at 68.5 grains. After 68.5 my speed was eratic and got allot of powder fouling. I assumed this was because I wasn't burning over 68.5 effectively with my barrel length. 67-68.5 gave me less than .2 of vertical on a 600 yard ladder test. I then shot an ocw test at 100 and found 67.6 to be in the middle of a node. I then shot different COL's with 67.6 and determined that they shot best kissing the lands. My chrono still reads 2885-2904 at 15' from the muzzle with a e.s. of 19 and sd of 9, so I am very happy with the load even if it is slow, just trying to figure out why.

Last edited by jsthntn247; 08-31-2011 at 09:09 AM. Reason: spelling
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  #11  
Old 08-31-2011, 05:15 PM
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Re: 162 sst b.c.

I know you were asking about bc but with a 24" barrel try a faster powder, imo Imr4350 with fed210m's I bet you can match the velocity, gain accuracy, and get your ES in the single digits with a lot less powder, H4831sc works good as well, I use H1000 for some things but its not one of my favorites because it is dirty and carbon fouls faster.
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