Magna porting

waterfowler · April 24, 2010, 09:40 AM

Can a shotgun barrell be magna ported? If it can, what is the outcome of this? My thinking is the gun will have a lot less kick, but the spread of the bbs will stay more compact. This would be fo bird hunting. Also, in a slug gun, would this improve accuarcy or not? Thanks

noyes · April 24, 2010, 10:41 AM

Quote:

what is the outcome of this?

Money out of your pocket , that could have been spent on shells.

Magna ported a shotgun for less recoil , i.m.o. add some weight to your shotgun to reduce recoil .Added weight is a guaranteed way to reduce recoil.

Shorthair · April 24, 2010, 02:16 PM

http://www.magnaport.com/sgun.html

HankB · April 24, 2010, 10:04 PM

I had a .375 H&H rifle Mag-Na-Ported, and it made quite a bit of difference - I'd estimate a 20% reduction in actual recoil and 50% reduction in muzzle jump.

As for shotguns . . . I've fired Pro-Ported shotguns and I can't tell the difference.

Think about it - the powder charge of a shotgun relative to the weight of the shot column is tiny compared to the powder charge of a high power rifle and a bullet, so the powder contributes little to shotgun recoil. Add in the pressure factor - CHAMBER pressure on a shotgun is comparable to MUZZLE pressure on a rifle - and by the time the shot charge passes the ports, there aren't enough powder gasses at a high enough pressure to make much difference by porting them upward.

Oh, I suppose theoretically there might be a little reduction in muzzle jump . . . but not enough for me to notice.

mete · April 24, 2010, 10:32 PM

Shotgun Magnaport won't have an effect with target loads but will with full loads.

bobelk99 · April 24, 2010, 10:38 PM

You might be better served by installing a recoil reducer, such as the Edwards Recoil Reducer.
http://www.edwardsrecoilreducer.com/

Brownells lists all 3 models.

noyes · April 25, 2010, 12:59 AM

Watch this , no ports mom.......

http://www.youtube.com/watch?v=ulyWFf_YWmk

&

http://www.youtube.com/watch?v=PzAwwybwTR4

.

April 24, 2010, 09:40 AM	#1
waterfowler Senior Member Join Date: January 31, 2010 Posts: 115	Magna porting Can a shotgun barrell be magna ported? If it can, what is the outcome of this? My thinking is the gun will have a lot less kick, but the spread of the bbs will stay more compact. This would be fo bird hunting. Also, in a slug gun, would this improve accuarcy or not? Thanks __________________ If guns are outlawed, only the outlaws will have guns

April 24, 2010, 02:16 PM	#3
Shorthair Senior Member Join Date: March 11, 2005 Location: Michigan Posts: 348	http://www.magnaport.com/sgun.html __________________ Earth First! We can hunt the other planets later.

April 24, 2010, 10:04 PM	#4
HankB Senior Member Join Date: March 30, 2000 Location: Central Texas, outside of Austin Posts: 1,692	I had a .375 H&H rifle Mag-Na-Ported, and it made quite a bit of difference - I'd estimate a 20% reduction in actual recoil and 50% reduction in muzzle jump. As for shotguns . . . I've fired Pro-Ported shotguns and I can't tell the difference. Think about it - the powder charge of a shotgun relative to the weight of the shot column is tiny compared to the powder charge of a high power rifle and a bullet, so the powder contributes little to shotgun recoil. Add in the pressure factor - CHAMBER pressure on a shotgun is comparable to MUZZLE pressure on a rifle - and by the time the shot charge passes the ports, there aren't enough powder gasses at a high enough pressure to make much difference by porting them upward. Oh, I suppose theoretically there might be a little reduction in muzzle jump . . . but not enough for me to notice. __________________ To be kind to your enemy is to be cruel to yourself - Sun Tzu

April 24, 2010, 10:38 PM	#6
bobelk99 Senior Member Join Date: February 18, 2005 Location: Central KY Posts: 220	You might be better served by installing a recoil reducer, such as the Edwards Recoil Reducer. http://www.edwardsrecoilreducer.com/ Brownells lists all 3 models. __________________ "You have the rest of your life to solve your problems.. How long you live depends on how well you do it."

April 25, 2010, 12:59 AM	#7
noyes Senior Member Join Date: December 27, 2008 Posts: 1,032	Watch this , no ports mom....... http://www.youtube.com/watch?v=ulyWFf_YWmk & http://www.youtube.com/watch?v=PzAwwybwTR4 . Last edited by noyes; April 25, 2010 at 01:07 AM.

April 24, 2010, 10:32 PM	#5
mete Senior Member Join Date: June 14, 2004 Location: NY State Posts: 4,944	Shotgun Magnaport won't have an effect with target loads but will with full loads.