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338 snipe-tac project (338-408imp)

 
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  #22  
Old 02-06-2006, 05:48 PM
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Re: 338 snipe-tac project (338-408imp)

Impressive!!!

Could you shove us some data on? What you predict.. drop, wind drift..
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  #23  
Old 02-06-2006, 06:36 PM
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Re: 338 snipe-tac project (338-408imp)

Norhman:

I have only put several loads through the crono, 250grn & 300grn sierra match kings, 250's were showing 3550fps.

The 300grn starting loads were 3200fps
The highest load i had was 3425fps. These were H-BMG50 powder.

I tried some 200grn nosler BT's, they shot very good, one hole groups at 100yds, but there is too much free bore as the reamer is set for the 300MK bullet, this will result in the cases wrinkling. They were running 3900fps.

I havent tried the 350grn bullets yet, that will be my next test. Im hopefull for 3200fps.

You could plug these numbers into your balistic calculators to see what the drop is.

The barrel length is 33"
At 3200fps (300MK) with a 500yd sight in, you add 48 clicks to get to 1000 zero.

1000yd enery is 2929 foot pounds.
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  #24  
Old 02-07-2006, 11:30 AM
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Re: 338 snipe-tac project (338-408imp)

[img]/ubbthreads/images/graemlins/shocked.gif[/img]
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  #25  
Old 02-07-2006, 11:57 AM
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Re: 338 snipe-tac project (338-408imp)

BD -- what barrel and brass are you using??...i saw a 36" tube top out at a little over 3300 (with 300's) with h5010

JB
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  #26  
Old 02-07-2006, 12:16 PM
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Re: 338 snipe-tac project (338-408imp)

JB

I have a Barney Lawton bbl on this gun 11.25 twist 33"
IMR 5010 didnt give me the best vel or groups, i tried it as test loads and fire forming. I want to try some of the US869.

Dave
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  #27  
Old 02-09-2006, 06:32 PM
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Re: 338 snipe-tac project (338-408imp)

JB

I forgot to say, the brass comes from TTI Armory .
It costs about 33.00 for 20 rounds.
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  #28  
Old 02-09-2006, 06:43 PM
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Re: 338 snipe-tac project (338-408imp)

It's all coming together rather well,
I have the stock bedded and ready for final finishing. Rifle weight with out scope is 13.5#

Next to build a set of reloading dies, Full length sizer, Neck sizer and seater die.

I have a Hydraulic form die on order from Hornady, that will remove the extra work required for fire forming.

After all that.... BOOM BOOM! [img]/ubbthreads/images/graemlins/grin.gif[/img]
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