Magnaport?

mike56

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I recall this being a big thing with revolvers way back. Wasn't cheap.
Supposed to reduce recoil, but added muzzle flash?

Good thing? Bad thing?

Found a nice 625 in 45colt with it but not sure if it's worth it?
 
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I had my deer hunting SS Ruger Redhawk in 41 Mag with a 7 1/2in barrel Mag-Na-Ported and it did help with muzzle flip. I never noticed any flame jetting from the cuts at all. In my max handloads, I used H110 which was known for it's bark and flash but I didn't notice it being any worse after the treatment.
 
This topic comes up frequently here.

Some folks like magnaported guns, some dislike them intensely, some don’t care.

Magnaported guns have a small market and generally don’t bring as much as guns without the extra holes.

They produce unpleasant blast and will make you unpopular on the firing line.



I’m in the ‘intensely dislike’ group.
 
I only have 1 with Mag-na-port and I really like it. A true collector would probably only be interested in guns that haven't been altered but they're also going to want the original box and it would need to be in 99 plus percent so if it's a gun that doesn't have a box or missing original grips etc. Mag-na-port can't hurt value too much.
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Going to give up on finding a 4 inch 25. Getting crazy money for them these days.
Going to be a shooter for me so I may go for it. I reload for it, so my loads are not going to be max at all. Seems there were not that many 625's in 45colt?
 
Did a "one after the other" test with non ported S&W M329 4" (max 2400), and a 6" Magnaported Freedom Arms .475 Linebaugh (max H110). Did this several times with different people. Everyone said the non ported M329 had more blast/flash.

FWIW,

Paul
 
Collectibility and value are always subjective. There are also fashion and trend influences. But, quality of workmanship is more absolute. Mag-Na-Port is a good company that has always done high quality work. The muzzle blast aspect is generally overstated by folks who confuse magnaporting with muzzle brakes that incorporate an expansion chamber near the muzzle.
To put it into context, other examples of modified S&Ws have, with time, acquired niche followings such as those worked on by King's or John Jovino. Even "Fitz Specials", which many consider to be the height of gun butchery, have a market.

As a reloader, you'll have no trouble coming up with loads that get the most out of the advantages offered by magnaporting.
 
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Yes, of course I know this thread is about revolvers but I think my remarks might be useful to someone who is considering Magnaporting.

The one gun I have that I'd never part with is a Ruger No.1 in 458 Win Mag. Very accurate, superb trigger and gorgeous wood.

I've had the gun for 44 yrs and early on had it Magnaported. I'm sorry I did that. Don't think it reduced recoil to any significant amount and I can't say that I ever found it had more muzzle blast either. All it did was detract from the pristine condition of the gun. Don
 
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Depending on how you use the revolver or pistol it can be ok, or really bad.

The good is that it can reduce recoil and muzzle rise.

The bad is:

1) it’s not cast bullet friendly.

2) on a self defense handgun it makes shooting from a close in retention position a lot more interesting as it blows gas into your side and or up into your face.

3) muzzle flash is much more pronounced, which is again a major negative on a self defense pistol.

——-

Personally, I’d consider magnaporting something like a 10” or 14” Contender in .30-30 or similar center fire rifle cartridge used for handgun hunting. But then again I’ve owned Contenders in a number of center fire rifle cartridges and have never done it yet, so probably not.
 
I have a model 58 that was Mag-na-ported before I owned it. Also had a nice trigger job and a not so well done square to round butt work. I think the porting helps and I don't notice any flash coming out of the ports. Even though I only shoot jacketed bullets, it's still important to clean the ports on occasion to keep them clean. I bought it because I reload for 41 Mag and I wanted to shoot the 58! Also came with the original box and papers.
 
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Porting works best with high pressure cartridges, which makes me wonder why someone would port a revolver in 45 Long Colt? Porting can reduce muzzle rise, but the ports can also accumulate lubricant and lead when using swaged or cast lead bullets.
 
I recall this being a big thing with revolvers way back. Wasn't cheap.
Supposed to reduce recoil, but added muzzle flash?

Good thing? Bad thing?

Found a nice 625 in 45colt with it but not sure if it's worth it?

Is your 625 a dash 6 Mountain Gun? I got my 625-6 MG in
.45 Colt new from the dealer already magnaported. I also always wondered why they ported a .45 Colt.
 

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Is your 625 a dash 6 Mountain Gun? I got my 625-6 MG in
.45 Colt new from the dealer already magnaported. I also always wondered why they ported a .45 Colt.

SAAMI spec .45 colt is pretty anemic (14,000 psi, 15,900 CUP) in recognition of some of the older original black powder era revolvers chambered in .45 Colt.

Some handloading manuals have “Blackhawk and T/C Contender only” loads that run around 25,000 CUP or 22,000 psi. But those loads should *ONLY* be used in those handguns, not in a S&W, even an N frame that has a .44 Magnum counterpart as the steel in them is heat treated differently.

I do shoot some .45 Colt loads in Winchester 1892 and Rossi 92 rifles, as that action is essentially a downsized Model 1886 and is incredibly strong (Rossi used to chamber their 92 in .454 Casull) that approach .44 Magnum *performance* - but at a lot less than .44 Magnum pressures. The data for those loads is around 32,000 CUP, roughly 30,000 psi and well below the 36,000 psi max pressure for the .44 magnum.

I bring that all up as magnaporting a 625 chambered for .45 Colt would seem to encourage the use of higher pressure loads, which is a really, really, bad idea.
 
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