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 CVA Buckhorn Consistency

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Clyde



Number of posts : 348
Age : 63
Location : Delaware
Registration date : 2011-11-27

PostSubject: CVA Buckhorn Consistency   June 22nd 2014, 5:54 am

I was at the range yesterday and shooting the Buckhorn which because of the breech plug design means 777.  Now I was using the 300 gr. Alpha Golds 90 gr 777 and Winchester 777  primer.  Once I zeroed the first group was an excellent 1 inch 3 shot group, however the groups opened to 2 inches for the next two groups.  I opened another box and got another 1 inch group but instead of being about 1 inch high the zero was now point of aim.

Now if there are any 777 shooters out there could you help me with how much seating pressure you used I did seem to notice that the lighter the pressure the better the grouping,  I also was getting to the bottom of the can and noticed the powder getting finer so possibly I was shooting a slightly hotter load hence a little flatter trajectory.  Obviously, it has potential if I got 2 one inch groups so I 'm looking for consistency.  Last week I shot Barnes MZ 300 gr and it had some serious vertical stringing and I also shot some 300 gr t/c shockwaves yellow tipped in the superglide sabot which it did seem to like .  Last group of the day was 1.5 inches.

Scope screws and stock screws were checked before and during the session and remained tight.  I'm just looking for thoughts.  Thanks.
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Spitfire



Number of posts : 5321
Age : 51
Location : South Africa
Registration date : 2011-11-20

PostSubject: Re: CVA Buckhorn Consistency   June 22nd 2014, 8:41 am

Did you give the barrel time to cool off , can also cause stringing and opening up of the groups.
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Clyde



Number of posts : 348
Age : 63
Location : Delaware
Registration date : 2011-11-27

PostSubject: Re: CVA Buckhorn Consistency   June 22nd 2014, 11:36 am

Yes I did try to wait 5 minutes between shots, I got much more vertical stringing last week with the Barnes mz which kind of surprised me.
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FrontierGander
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Location : Boncarbo,Colorado
Registration date : 2008-05-19

PostSubject: Re: CVA Buckhorn Consistency   June 22nd 2014, 11:41 am

I got some stuff I will take pictures of and post for you about vertical stringing.
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