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Rifles, Reloading, Optics, Equipment
Reloading
Ladder test target, and how to interpit it
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<blockquote data-quote="royinidaho" data-source="post: 68246" data-attributes="member: 2011"><p>Shot @ 100 yds</p><p></p><p>Was attempting to eliminate parallex by using only the center part of the lens by backing off the scope. (Scope came w/the trade) Then I found that if I put the reticle intersection at the bottom of the scope.</p><p></p><p>I had some R-P factory loads w/300gr solids that went in the high 2600s. I pulled a solid and inserted a Hornady and got 2619 so I was expecting that velocity.</p><p></p><p>The R-P factory load is 81.5gr of a powder that very closely resembles W760. That would be something if RP were using WW powders....</p><p></p><p>@ 79gr of W760 I got the 2536. There are no/none pressure signs. We mic'd the cases at both ends of the "ladder". Nothing abnormal.</p><p></p><p></p><p>The whole deal wasn't very punishing except for shot #15, I think I was getting a little cocky/mucho or something and my shoulder joint took a direct hit. I slacked off on my concentration regarding butt placement. I shot #16 and said, "time to change"</p><p></p><p>W/the 300 gr @ a good solid 2500 I'm getting 165gr 06 muzzle energies @ 300 yds. Hell, that otta be enough.</p><p></p><p>Also, I've been shooting low recoil rifles for so many years I'm not sure I really know how to "shoulder" a thumper.</p><p></p><p>Also Winchester lists 77gr of W760 with both the 270 &amp; 300bgr bullets. That doesn't make much sense to me.</p><p></p><p>And, I'm using new cases that have the sizing button pulled through to even them and have chamfered the mouths. I noticed that when seating the bullets some were really hard to seat which is unusual with a boat tail design.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 68246, member: 2011"] Shot @ 100 yds Was attempting to eliminate parallex by using only the center part of the lens by backing off the scope. (Scope came w/the trade) Then I found that if I put the reticle intersection at the bottom of the scope. I had some R-P factory loads w/300gr solids that went in the high 2600s. I pulled a solid and inserted a Hornady and got 2619 so I was expecting that velocity. The R-P factory load is 81.5gr of a powder that very closely resembles W760. That would be something if RP were using WW powders.... @ 79gr of W760 I got the 2536. There are no/none pressure signs. We mic'd the cases at both ends of the "ladder". Nothing abnormal. The whole deal wasn't very punishing except for shot #15, I think I was getting a little cocky/mucho or something and my shoulder joint took a direct hit. I slacked off on my concentration regarding butt placement. I shot #16 and said, "time to change" W/the 300 gr @ a good solid 2500 I'm getting 165gr 06 muzzle energies @ 300 yds. Hell, that otta be enough. Also, I've been shooting low recoil rifles for so many years I'm not sure I really know how to "shoulder" a thumper. Also Winchester lists 77gr of W760 with both the 270 & 300bgr bullets. That doesn't make much sense to me. And, I'm using new cases that have the sizing button pulled through to even them and have chamfered the mouths. I noticed that when seating the bullets some were really hard to seat which is unusual with a boat tail design. [/QUOTE]
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Ladder test target, and how to interpit it
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