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Can't explain 6.5 Wby PLEASE Help

 
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  #8  
Old 04-08-2013, 05:57 PM
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Re: Can't explain 6.5 Wby PLEASE Help

No.. It gave good velocity but did not perform accurate enough.. I was using 72gr of retuumbo.

I tried n570.. It worked good velocity wise but again ES was all over the place and failed in accuracy.

I've had good luck with H4831.. You probably won't achieve max velocity.. Well you might with the 140.. I used it wi 130 Berger.. It was not a great speedster.. At all.. Like 3050 fps it's a snail load.. but it will shoot under 1/2" at 300. With a single ES...
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Old 04-08-2013, 07:52 PM
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Re: Can't explain 6.5 Wby PLEASE Help

Are you using magnum primers???? If so I wouldn't SLEEP on using LR primers.......
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Old 04-08-2013, 08:55 PM
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Re: Can't explain 6.5 Wby PLEASE Help

Is there any chance the powder you had loaded was from two different lot#?
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  #11  
Old 04-08-2013, 09:03 PM
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Re: Can't explain 6.5 Wby PLEASE Help

Is it possible you have developed a carbon ring? I have seen it happen with 6-284's in the past.
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Old 04-08-2013, 09:08 PM
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Re: Can't explain 6.5 Wby PLEASE Help

My first thought would be a fouled barrel. Try stripping all the copper and see what happens. My bet would be the pressure will immediately go back where is belongs. (This isn't a wild guess I had exactly the same experience.)
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Old 04-08-2013, 09:34 PM
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Re: Can't explain 6.5 Wby PLEASE Help

You mentioned that it was the same powder...Are the bullets from the same lot?...Berger changed dies on their 6.5 140s VLD hunting bullets sometimes between last summer and this spring....If I remember correctly the base to ogive measurement increased by .046 or .047 towards the tip(at least in the lot I received)...If you were measuring by COAL and not CBTO then that could possibly account for a rise in pressure especially if you were near the lands to begin with...The new bullets do however average approximately .030 longer so in actuality you you might only be .015 or so closer to the lands with a COAL measuremnt the same as the old ones...

Just another thing to think about.

My $.02,
Randy

Last edited by MNbogboy; 04-08-2013 at 09:45 PM. Reason: grammer
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  #14  
Old 04-08-2013, 10:36 PM
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Re: Can't explain 6.5 Wby PLEASE Help

I was told on the 6.5 wby with a 27" barrel you should not expect 3200-3250. I would try and get in that ball park and see what happens.
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