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400NitroExpress
.400 member


Reged: 26/11/03
Posts: 1154
Loc: Lone Star State
Re: Federal 470NE surprise
      25/12/05 08:30 AM

The powder Federal uses is non-cannister grade. Early Federal .470 varied considerably, lot to lot. I hear they're adjusting the charge now to allow for density variations between lots. 7.5% isn't surprising. I've run into that much with off the rack RL 15.

LGF:

What barrel length? I have no idea what data Federal is using, but the Kynoch standard ballistics for .470 were for 75 grains cordite and a 500 grain bullet for 2125 fps from a 31" pressure barrel. If your barrels are 24", 2060 fps would be fairly warm.
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Subject Posted by Posted on
* Federal 470NE surprise bonanza 22/12/05 11:36 AM
. * * Re: Federal 470NE surprise 400NitroExpress   25/12/05 08:30 AM
. * * Re: Federal 470NE surprise bonanza   25/12/05 11:47 PM
. * * Re: Federal 470NE surprise Rusty   26/12/05 02:42 AM
. * * Re: Federal 470NE surprise k80   26/12/05 03:39 AM
. * * Re: Federal 470NE surprise Rusty   26/12/05 04:14 AM
. * * Re: Federal 470NE surprise bonanza   27/12/05 01:03 AM
. * * Re: Federal 470NE surprise LGF   25/12/05 03:46 PM
. * * Re: Federal 470NE surprise Judson   24/12/05 12:47 PM
. * * Re: Federal 470NE surprise sbs470   25/12/05 12:23 AM
. * * Re: Federal 470NE surprise new_guy   23/12/05 08:56 AM
. * * Re: Federal 470NE surprise 500Nitro   23/12/05 09:23 AM
. * * Re: Federal 470NE surprise rgp   23/12/05 09:56 AM
. * * Re: Federal 470NE surprise LGF   23/12/05 04:31 AM
. * * Re: Federal 470NE surprise 500Nitro   23/12/05 07:02 AM
. * * Re: Federal 470NE surprise CptCurlAdministrator   22/12/05 11:45 AM
. * * Re: Federal 470NE surprise bonanza   22/12/05 12:13 PM
. * * Re: Federal 470NE surprise BlainSmipy   22/12/05 01:42 PM
. * * Re: Federal 470NE surprise bonanza   23/12/05 02:24 AM
. * * Re: Federal 470NE surprise nitro476   23/12/05 10:31 AM
. * * Re: Federal 470NE surprise chrispie   23/12/05 01:14 PM

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