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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

DarylS
.700 member

Reged: 10/08/05
Posts: 26994
Loc: Beautiful British Columbia, Ca...

Re: Muzzle Brake Or Porting?
07/03/08 02:06 AM

Rod- any time you change the harmonics of the barrel, you change the 'time' of the bullet's departure to a different muzzle location, IE: the change of harmonics, as I understand this, is to the wave length and maybe shape as well - so- in stead of the bullet exiting at a low node, or high as the case should be, it exits somewhere else, thus a change in the POI.
; The browning brake, adjusts the weight in or out, only slightly, but it has a profound effect in some guns, expecially with light barrels.
: Buddy of mine bought a .338 Browning from a deceased friend's widow. The original owner thought it shot just fine, and it did, for a moose hunting rifle - about 2" with his loads(which was the same load used by buddy-normally. The original owner always thought his 2 1/2" groups were due to him, not the rifle.
: Buddy adjusted the brake about 3/8" in all, and the same group shoots into .6" for 5 shots. Barrel harmonics are an interesting thing.
: I've known on match shooters who pick a load due to it's consistancy, then cut 1/8" off the end of the barrel until the load shoots sub 1/2", then leave it there. it usually only takes an inch in all of change to get the harmonics to exit the bullet at the top, or bottom of a node. Big groups come from consistant Sd loaded bullets exiting in the middle of the nodes or from poor Sd's loads tht exit all over the specturm from low to high. These usually shot a low of vertical in the group.
; I don't have much of a handle on barrel harmonics, but this is some of what I've learned - right or wrong- seems to work in thoery.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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Subject	Posted by	Posted on
Muzzle Brake Or Porting?	Luckydog	03/03/08 12:30 AM
Re: Muzzle Brake Or Porting?	Mike_McGuire	05/03/08 11:20 AM
Re: Muzzle Brake Or Porting?	Bramble	05/03/08 09:27 AM
Re: Muzzle Brake Or Porting?	9.3x57	05/03/08 10:29 AM
Re: Muzzle Brake Or Porting?	jro45	04/03/08 10:56 PM
Re: Muzzle Brake Or Porting?	JabaliHunter	04/03/08 11:01 PM
Re: Muzzle Brake Or Porting?	9.3x57	05/03/08 12:21 AM
Re: Muzzle Brake Or Porting?	jro45	04/03/08 11:37 PM
Re: Muzzle Brake Or Porting?	JabaliHunter	04/03/08 11:43 PM
Re: Muzzle Brake Or Porting?	jro45	05/03/08 10:15 PM
Re: Muzzle Brake Or Porting?	9.3x57	06/03/08 01:07 AM
Re: Muzzle Brake Or Porting?	DoubleD	06/03/08 03:23 AM
Re: Muzzle Brake Or Porting?	9.3x57	06/03/08 10:46 AM
Re: Muzzle Brake Or Porting?	Mike_McGuire	06/03/08 11:22 PM
Re: Muzzle Brake Or Porting?	9.3x57	07/03/08 01:43 AM
Re: Muzzle Brake Or Porting?	DarylS	07/03/08 02:06 AM
Re: Muzzle Brake Or Porting?	DoubleD	06/03/08 01:11 PM
Re: Muzzle Brake Or Porting?	9.3x57	06/03/08 01:19 PM
Re: Muzzle Brake Or Porting?	Bramble	06/03/08 06:58 PM
Re: Muzzle Brake Or Porting?	DoubleD	07/03/08 02:25 AM
Re: Muzzle Brake Or Porting?	Luckydog	07/03/08 08:35 AM
Re: Muzzle Brake Or Porting?	Bramble	07/03/08 11:34 AM
Re: Muzzle Brake Or Porting?	9.3x57	07/03/08 11:57 AM
Re: Muzzle Brake Or Porting?	Luckydog	06/03/08 12:06 PM
Re: Muzzle Brake Or Porting?	jro45	06/03/08 09:24 AM
Re: Muzzle Brake Or Porting?	DoubleD	06/03/08 12:47 PM
Re: Muzzle Brake Or Porting?	NitroX	03/03/08 05:13 PM
Re: Muzzle Brake Or Porting?	JabaliHunter	03/03/08 08:03 PM
Re: Muzzle Brake Or Porting?	bonanza	03/03/08 10:54 AM
Re: Muzzle Brake Or Porting?	9.3x57	03/03/08 12:58 PM
Re: Muzzle Brake Or Porting?	9.3x57	03/03/08 07:13 AM
Re: Muzzle Brake Or Porting?	Luckydog	03/03/08 07:32 AM
Re: Muzzle Brake Or Porting?	hoppdoc	03/03/08 08:16 AM
Re: Muzzle Brake Or Porting?	Bramble	03/03/08 09:59 AM
Re: Muzzle Brake Or Porting?	mikeh416Rigby	03/03/08 02:24 AM
Re: Muzzle Brake Or Porting?	zimhunter	03/03/08 07:10 AM
Re: Muzzle Brake Or Porting?	DoubleD	03/03/08 12:54 AM
Re: Muzzle Brake Or Porting?	dnovo	03/03/08 01:20 AM

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