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.243 load development

 
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  #1  
Old 01-22-2011, 09:22 PM
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.243 load development

Im trying to develope an accurate load for my 700 vtr .243 using berger 95 vlds. Been using imr 4831 and 4350, better luck with the 4831. The best group at 100yrd has been about .75 in. Just ran out of primer and I'm wanting to know if another powder will likely give better results like wise will lapua brass give better results than my winchester or hornady left over factory ammo brass. been using br2 primers. Is .25 group too much to ask for with this gun?
I'm new to reloading and any help would be appreciated.
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  #2  
Old 01-22-2011, 10:27 PM
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Re: .243 load development

How far do you have the bullet seated off the lands, winchester brass is fine, BR-2s are fine, and Imr 4350 works best for me but you can try RE19 or H414.
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  #3  
Old 01-22-2011, 11:22 PM
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Re: .243 load development

well i don't know exactly how far off the lands. I got the hornady oal guage, but apparently i'm not able to get accurate readings with it for some reason. When i measured with that guage my oal on the lands was like 2.850 I believe so i seated the bullet about .005 off, and was getting a really large group like 2-3 inches, soon realized i was forcing the bullet into the land at that oal and eventually brought it down to 2.832 where i'm now grouping .75. i still want better though. It also seems to me that i'm getting some inconsistancey in velocity in my groups because each group is usually taller than wide which is why i ask about maybe an inconsistancy in powder but i also need to get an o-give thing for my caliper, that may be part of the problem if im not getting an accurate measurement of oal.
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Old 01-22-2011, 11:35 PM
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Re: .243 load development

You should put them in the lands .003-.005", I think you have a neck tension issue, or they are to hot, thats usually where you get the vertical. If your running them over 3100fps thats really to much for the accuracy your asking.
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  #5  
Old 01-22-2011, 11:48 PM
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Re: .243 load development

what is neck tension? and i dont have a chronograph either, but i havn't exceeded any of the max loads that berger gave me. should i be satified with what i've been able to get thus far? i was kinda hoping to "clover leaf" but idk.
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  #6  
Old 01-22-2011, 11:59 PM
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Re: .243 load development

Neck tension in the amount of force in pounds it takes to seat the bullets in the case, it can be reduced by polishing the inside of the necks and or using a bushing type neck sizer, and 3/4 moa is ok for a factory remington.
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  #7  
Old 01-23-2011, 12:07 AM
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Re: .243 load development

thanks for the help, i may try a few different things without buying a bunch of different powers. now i'm anxiouse for my viper pst to come in so i can finally try out my 300 rum, and start making some loads for that, seems like there is more info on that cartrige on here.
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