12GA FH to 700HE to 4bore- Magnum Results-

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hubel585
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Re: 12GA FH to 700HE to 4bore- Magnum Results-

Post by hubel585 » Fri Jan 24, 2020 4:39 pm

The guys that did the super accurate 416 HE did another
416 HE that has an 8" longer 42 inch K&P barrel..

Used a Stiller action and same load with 475 gr bullet, as in
first gun and and gained about 200 fps with good accuracy.
3065 fps. Tested 2 groups of 3 and less than 1/2 min moa.

And loads they used are not the highest speed loads
the cartridge is capable of....Here is print with specs for
the 416 HE reamer chamber ....Ed....

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hubel585
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Re: 12GA FH to 700HE to 4bore- Magnum Results-

Post by hubel585 » Mon Jul 13, 2020 6:06 am

Here is print with chamber reamer specs for the
416 HSM chamber..There are 3 base sizes we have,
depending on actions used. Got reamers for all 3..
Got cases for all of them..
Our cases are public domain, so that is why I post
info and specs. Manson makes reamers I use,,, Ed.
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hubel585
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Re: 12GA FH to 700HE to 4bore- Magnum Results-

Post by hubel585 » Sun Jul 26, 2020 4:33 am

Here is reamer print with chamber reamer specs for
the 460 HSM chamber .Couple guys getting set
to do 38-40 inch heavy 458 target barrels...Ed....
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hubel585
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Re: 12GA FH to 700HE to 4bore- Magnum Results-

Post by hubel585 » Sat Aug 22, 2020 6:18 am

With 40 inch barrel 416 HSM ,475 gr, get 3650, over 13,000 ft lbs muzzle energy.
Got guys getting set to have 38-40 inch 458 barrels made for 460 HSM.Ed..

hubel585
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Re: 12GA FH to 700HE to 4bore- Magnum Results-

Post by hubel585 » Wed Sep 02, 2020 12:16 am

More info on this gun, we did it for testing 416 HSM with a rebated rim,
to check in intermediate size actions, with the longer, stronger, bolt lugs, Ed..
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