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Long Range Hunting & Shooting
338-416 Rigby Improved
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 175224" data-attributes="member: 505"><p>Thanks for the info on the Kahn. I want to build something on those actions different from another 338-378. I like the idea of the 35 degree shoulder on that case. Do you know if that design has shown any improvements with accuracy or velocity? Where can I get info on it? Is there a barrel company who can chamber a barrel in the Kahn. I like that idea. I may just do one of those actions with it. I have been thinking about changing that shoulder for some time and figured somebody had just didn't know who. </p><p></p><p>The rifle I shoot the 3600 fps load in is a 28" Hart barrel on a MK 5 action. I had 1/2" freebore cut in it. It has a 1-12 twist for the light bullets. It was built particularly for the 200 ballistic tip to see what I could do with it. I call it my mid range gun for out to 700 or so yards. After that the light bullet starts falling off quite a lot. But out to there it is devastating on elk size critters. One time I did shoot a moose up in Alaska out of neccesity at a tad over 1100 yards with that bullet and one shot through the lungs put it down with no problem. Bullet performance was perfect under the off side hide. The gun was not designed with those ranges in mind though.</p><p></p><p>I started 50 new brass with that load and I have been through that box about 5 times but I would have to check to know exactly. I keep all my loads for each rifle in seperate 50 round boxes. It is not a super hot load in that rifle I just can't possibly get another drop of powder in the case. I use the fed 215 match primers. I suspect that if I shot that load in one of my guns with no freebore and a 1-10 twist it would be to hot. I have the gun zeroed at 650 yards for long range hunting and it averages 4 1/2" groups on zero.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 175224, member: 505"] Thanks for the info on the Kahn. I want to build something on those actions different from another 338-378. I like the idea of the 35 degree shoulder on that case. Do you know if that design has shown any improvements with accuracy or velocity? Where can I get info on it? Is there a barrel company who can chamber a barrel in the Kahn. I like that idea. I may just do one of those actions with it. I have been thinking about changing that shoulder for some time and figured somebody had just didn't know who. The rifle I shoot the 3600 fps load in is a 28" Hart barrel on a MK 5 action. I had 1/2" freebore cut in it. It has a 1-12 twist for the light bullets. It was built particularly for the 200 ballistic tip to see what I could do with it. I call it my mid range gun for out to 700 or so yards. After that the light bullet starts falling off quite a lot. But out to there it is devastating on elk size critters. One time I did shoot a moose up in Alaska out of neccesity at a tad over 1100 yards with that bullet and one shot through the lungs put it down with no problem. Bullet performance was perfect under the off side hide. The gun was not designed with those ranges in mind though. I started 50 new brass with that load and I have been through that box about 5 times but I would have to check to know exactly. I keep all my loads for each rifle in seperate 50 round boxes. It is not a super hot load in that rifle I just can't possibly get another drop of powder in the case. I use the fed 215 match primers. I suspect that if I shot that load in one of my guns with no freebore and a 1-10 twist it would be to hot. I have the gun zeroed at 650 yards for long range hunting and it averages 4 1/2" groups on zero. [/QUOTE]
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