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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 rum standard deviation,HELP
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<blockquote data-quote="BobbyL" data-source="post: 412813" data-attributes="member: 14081"><p>There is a few things that might help. I found that getting neck thickness correct is key when it comes to getting low SD's. I replaced the pilot on my case trimmer with a neck reamer. You can tell quickly if they are doing them all the same or not. Im surprised that your got that many loads out of them i found mine blew out primers pockets way to quickly no matter what the load was.</p><p></p><p>When i start my load development for larger calibers i look for a low SD before i do anything else. That is if im planning on shooting it long range. Next i found it useless to do load development at anything less then 300 yards and at that i do mine at 500 or farther. It just doesnt tell you anything when you dont do it at a longer range. The groups will vary from doing fairly well at both 100 and 500 to going from .25 moa to well over 1 moa. Its just hard to tell unless you do it at longer distances. Further more finding the right seating depth means a lot.</p></blockquote><p></p>
[QUOTE="BobbyL, post: 412813, member: 14081"] There is a few things that might help. I found that getting neck thickness correct is key when it comes to getting low SD's. I replaced the pilot on my case trimmer with a neck reamer. You can tell quickly if they are doing them all the same or not. Im surprised that your got that many loads out of them i found mine blew out primers pockets way to quickly no matter what the load was. When i start my load development for larger calibers i look for a low SD before i do anything else. That is if im planning on shooting it long range. Next i found it useless to do load development at anything less then 300 yards and at that i do mine at 500 or farther. It just doesnt tell you anything when you dont do it at a longer range. The groups will vary from doing fairly well at both 100 and 500 to going from .25 moa to well over 1 moa. Its just hard to tell unless you do it at longer distances. Further more finding the right seating depth means a lot. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 rum standard deviation,HELP
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