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Working up load

 
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  #1  
Old 05-01-2011, 11:55 AM
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Working up load

Just got back from the range where I tested my new load. I only increased it by +1.3 grains, which was pushing 3200+ fps Previous load was shooting at 0.25 0.35 MOA and was going 3050 fps,but today with my new load the best I got was .85 MOA the rest of the groups where 1.2 MOA 1.3 MOA, and I was only shooting at 300 yards. My conclusion, going faster opens up groups.
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Old 05-01-2011, 12:50 PM
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Re: Working up load

What cartridge 1.3 gr. is a mile in a smaller case. not so much in a 338-378, but it is still a major jump, if you are towards max. I have had many rifles shoot accurate near max.
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Old 05-01-2011, 03:35 PM
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Re: Working up load

That was my varminter in 223 :-) and 55 gr vmax, what it likes is 25.7 grains of varget, today all my loads were 27.0 grains
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Old 05-01-2011, 04:55 PM
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Re: Working up load

Why would you think that going away from an accurate load by 1.3gr, wouldn't result in a change?
Do you think a gun will be accurate with any and every abstract charge?
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Old 05-01-2011, 05:06 PM
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Re: Working up load

1.3 grains is a big jump for a .223. I usually only increase in steps of .2 to .3 grains in my smaller cases. On my .338s I only make adjustments in .5 grain increments and have seen some significant changes to groups with a .5 grain adjustment. If my gun was shooting .25 MOA, I would not mess with it. If you were trying to get more velocity and a big jump opened your groups up, you may want to adjust seating depths to see if that helps. If not, try a diffrent powder or stick with your good shooting load.
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Old 05-01-2011, 05:18 PM
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Re: Working up load

What thing really likes is RL-17 (very slow), it shoots 2.5 inches lower then Varget load, but its almost one hole 0.15 inch 5 shots at 100. The original load with Varget was 25.5 gr and yes I did increase it by 0.2 to 25.7 groups stayed the same, so today I thought why not lets just try to max out...
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  #7  
Old 05-01-2011, 06:04 PM
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Re: Working up load

Next thing I will decrease load from 27gr to 26.8 and working back unless I find sweet spot, the bullet seating depth I been tweaking with it last year and end up seating 0.018 of lands
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