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More about he guys that did the accurate 416 HE, they did a
416 HE that has an 8" longer 42 inch K&P barrel..
Used longer barrel and the same load with 475 gr bullet, as used
in the 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 picture.......Ed....
http://www.gunownerstv.com/jacobgun2.jpg
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Away for a time, sickness..
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. To help guys do their own setups.
Manson makes reamers I use,,, Ed.
http://www.gunownerstv.com/416hsmream.jpg
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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....
http://www.gunownerstv.com/460hsmream.jpg
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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..
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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..
http://www.gunownerstv.com/intertargetp.jpg
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Here is experimental action for 416 HSM in a heavy
stock....We lengthened port a little, set bolt stop back ,
opened bolt face fit the 416 HSM rebated rim. Ed.
http://www.gunownerstv.com/intertarget.jpg
Here is comparison of Montana PH to Pierce action we
modified to use for rebated rim 416 HSM testing..Ed.
http://www.gunownerstv.com/intermediates.jpg
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416 & 460 HE AND 416 & 460 HSM .LONG RANGE AND HUNTING
Can be set up in Pierce X10 ACTION for the 416 & 460 HE
AND X20 action for the 416 & 460 HSM , Can get those
if guys need one...Ed
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Here is picture of my 416 HSM test gun,... It is a big falling block we had
as a 8 bore years ago. Has a 34 inch , 1 5/8 "diameter, 1 to 10 twist barrel. .. Ed.
http://www.gunownerstv.com/hsmfb.jpg
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Followed this on the Alaskan forum. Very interesting.
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Have you even played with the 585HE necked down to take a 50 BMG projectile... Regretfully my state has decided to be morons and will not allow anything based on a BMG case.... So i have a few barrels to pull on rifles... I have 50 BMG bullet Swage dies, Jacket draw dies etc.. Just looking for a new case to play with. its either yours or necking up 408 Cheytac
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Mine is longer, holds more powder than cheytac, and we have made
416 HE, 460HE, and could easily do 510 HE. Bertram has got barrels of the brass,,...ED