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Rifles, Reloading, Optics, Equipment
Reloading
Extreme spread has me pulling my hair out.
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<blockquote data-quote="Kennibear" data-source="post: 874158" data-attributes="member: 51650"><p>RangerBrad</p><p></p><p>Lots of help from your buddies. My order of the universe:</p><p></p><p>1) Scrub your bore. Fouling can cause more problems than a floor covered with shattered glass.</p><p></p><p>2) Change powders. Guns are like women, they all go bang but that's all they have in common. IMR 4350 delivers SD's (not ES) in the 20fps range in my '06 and son's 300WinMag. Cannot get IMR 4350 to shoot under SD= 50fps in my Savage 375 Ruger. WW760 delivers an SD of 9fps (!!!) in the 375 Ruger. Go figure.</p><p></p><p>3) Neck size only. Sometimes a generous chamber can play havoc with a load and neck sizing will give you more consistency. We use the Lee collet neck sizer. Minimum working of the neck and absolutely no lube required, no scratches even.</p><p></p><p>4) SD is more important than ES. One shot can bump your ES off the page but shot to shot variables are way more important. Everybody telling you to look @ groups are right. Very low SD"s give you a small group and the long range groups point that out.</p><p>I have two chronographs a CED MII and a Chrony Beta Master. Set up w/ the Chrony tilted into the center of the MII (1' spacing vs. 2') the MII reads 3009fps Vs. the Chrony @ 2995fps. Shot to shot varies the same amount. 14fps difference from two different manufacturers is pretty dam good. It's not your chronograph.</p></blockquote><p></p>
[QUOTE="Kennibear, post: 874158, member: 51650"] RangerBrad Lots of help from your buddies. My order of the universe: 1) Scrub your bore. Fouling can cause more problems than a floor covered with shattered glass. 2) Change powders. Guns are like women, they all go bang but that's all they have in common. IMR 4350 delivers SD's (not ES) in the 20fps range in my '06 and son's 300WinMag. Cannot get IMR 4350 to shoot under SD= 50fps in my Savage 375 Ruger. WW760 delivers an SD of 9fps (!!!) in the 375 Ruger. Go figure. 3) Neck size only. Sometimes a generous chamber can play havoc with a load and neck sizing will give you more consistency. We use the Lee collet neck sizer. Minimum working of the neck and absolutely no lube required, no scratches even. 4) SD is more important than ES. One shot can bump your ES off the page but shot to shot variables are way more important. Everybody telling you to look @ groups are right. Very low SD"s give you a small group and the long range groups point that out. I have two chronographs a CED MII and a Chrony Beta Master. Set up w/ the Chrony tilted into the center of the MII (1' spacing vs. 2') the MII reads 3009fps Vs. the Chrony @ 2995fps. Shot to shot varies the same amount. 14fps difference from two different manufacturers is pretty dam good. It's not your chronograph. [/QUOTE]
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Reloading
Extreme spread has me pulling my hair out.
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