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Posted by: Paul ONeal ®
12/03/2003, 22:10:01

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Randy,

I went from groups in the .5s-.7s with a .329 bushing to groups in the low to mid .2s with the .327 bushing without changing anything else.  My .30x44 chamber has a .333 neck and my brass neck wall thickness is .0115 (Lapua).  The load is about 37.5gr N133 and a 125gr Chism bullet in a 15 twist barrel.  The .327 bushing groups have a horizontal distribution to them with very little verticle.

A compressed load of H322?  39.5gr?  Is that H322 Extreme?  I have never gone up that high.  The highest charge I ever used with the 134 bullets is 37.5gr and with the 125s is 38.0gr.  And I thought these loads were on the hot side in both of my barrels--I was having brass stretching problems.

I think I learned at the Nationals in LaGrande that my gun was out of tune and I verified it here in September when we shot a 100yd TCL match when I shot a very loose 249-9x and 4 of the 5 guys ahead of me shot 250s with high x counts.  The conditions can be very tough here in Wenatchee in the summer--I just figured that I was having problems reading the conditions, but I think my gun may have been out of tune all summer long.  When I look back in my records I can see a definate drop in my scores when I ran out of 134 and 135 bullets.

Thanks for the help, Paul.