Barrel porting?

Brutus

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Hey fellow Gun Nutz, I am in the process of perhaps acquiring another 12 gauge Ithaca. It is a 1970's manufactured police type 5 shot model. I am seriously considering getting the original 20 inch, parkerized barrel ported, because it is horrendously thin.
This gun is obviously safe, but it is the thinnest I have seen, and the present owner as well, on any shotgun regardless of make or gauge.
Yes, it is the older "slamfire model" and man it wants to go into orbit when you do so! Can anyone recommend porting? Does it make a difference in percieved recoil? Is the cost worth it and how much should I expect to pay?

Cheers.....
 
I have a 500 Mossberg with a ported 28" barrel, my dad has an 870 Remington with a 26" non-ported barrel. Firing the same ammo, I find no difference in felt recoil between the two.
 
I have 3 20 inch barrels Magnaported. I find it makes a significant difference. Starting with an aimed first shot, it's easy to knock down 3 steel plates at 15 paces under 1 second with my Benelli M1 Super field.

The port holes have to be back the right distance from the muzzle where pressure is higher and therefore more effective.
 
Porting...

There is a reason why serious trap, skeet, clays and combat style match shooters have their barrels either ported, or purchase their high end guns already done from the factory. Simply put, it works. Follow up shots, as noted earlier in this thread, are faster, recoil recovery is quicker. Another trick, now provided on top end guns by the factory, is having the forcing cone lenghthened, this also contributes to not only more consistant patterns, but I feel for some reason contributes to recoil reduction. My combat style sg's and competition guns have it. I shoot a Beretta 682S for skeet and clays.
Only the upper barrel is ported....and it is a relativly heavy shotgun. When I shoot doubles, there is a significant difference in "felt" recoil, between barrels. Now, the Ithica 37 is a fairly light shotgun, and in theory, there has to be a magic line where at some point, even porting wont help on a light gun, just because, a 12 ga has kick....Top end Benellis have a recoil reducer just to help soak up the recoil, and they are one of the best, also available ported. If I were you, and you wanted to get serious with your 37, and not get beaten up by recoil, the first step is an old combat trick..loosen one, and remove the other screw out of the but plate or recoil pad, swing it to the side, and you will see the stock attachment screw hole. Get some lead shot from a reloader, if you dont have any, size isnt important(in this case) and fill up the screw hole. press in a little material of whatever you have so the shot dosent rattle around. You will find that alone will help soak up some recoil, and it will allow you to swing faster on targets becaiuse you have moved the weight more to the rear...worked for me on a light pump many years ago.
Just my 2 cents..
 
I thank you gentlemen. This is new information to me as I am mostly a rifle shooter and sometime pistol shooter. In the past the shotgun was for me, only a harvesting tool of upland game and as well, duck/geese before the lead shot ban. It is awesome to have access to a forum like this. Well before a guy lays out hard earned cash.
Thanks again and Cheers......
 
Porting

Hey Brutus....just for a ref...an excellent single barrel porting job costs 75.00
out here in BC...by a competent shotgun smith...
Cheers
 
Would it be worth to port an HP9-1?
By worth I mean worth the time since I could port it myself.
What do you think?
 
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