The mag spring needs to extend past the mag tube about 8". I would go with the Wolff universal 12Ga springs. The are very high quality & strong with thin wire coils that are wide set and allow the most room in the mag tube. They come 40" long and need to be cut to size. Cut it to 28" or 29" and bend the ends down closer to the lower coil so they don't stick up. I buy a 100 @ a time. I sale them already sized & shaped for the 590 shotguns.

GC

 

The mag spring needs to extend past the mag tube about 8". I would go with the Wolff universal 12Ga springs. The are very high quality & strong with thin wire coils that are wide set and allow the most room in the mag tube. They come 40" long and need to be cut to size. Cut it to 28" or 29" and bend the ends down closer to the lower coil so they don't stick up. I buy a 100 @ a time. I sale them already sized & shaped for the 590 shotguns.
GC

Max,

I've got a Mossberg 500 breacher with a VangComp+1 extension 7 shot (6+1)
Could I use any of these standard springs listed below or do I HAVE to custom cut.

Thanks

From Wolff Springs website:

MOSSBERG 500 and 590 Shotguns
Magazine tube springs
Extra power magazine springs are available to replace weak or broken springs. No fitting is required
For use in:
Mossberg 500 12 & 20 ga - 6 shot (5+1)
Mossberg 590A1 - 6 Shot (5+1)
Stock No.17901 - each............$ 8.59 ea
Stock No.17902 - Pak of 3 .....$ 21.99 ea

For use in:
Mossberg 590, 12 ga - 9 Shot (8+1)
Mossberg 500, 12 ga Extended Tube 8 shot (7+1)
Stock No.17905 - each............$ 8.99 ea
Stock No.17906 - Pak of 3 .....$ 22.99 ea

 

braxton1,

Call mike at the LE Service again, 1.800.399.1354. Mike will explain more to you in detail about the spring tension on the springs. While widely seen as an issue to some, they have design reasons for being such as they are. Mike can do a far better job explaining then I can.

Robert

 

Max,

I've got a Mossberg 500 breacher with a VangComp+1 extension 7 shot (6+1)
Could I use any of these standard springs listed below or do I HAVE to custom cut.

I would go with the Wolff extra power universal 12Ga spring.

The general rule is 8" past the end of the mag tube for full length mag tubes on all shotguns. It should also work a +1 tube extension.

My experience from sizing a couple hundred of the Wolff extra power springs a year is 28" is the right length for 18" to 20" bbl shotguns with full length mag tubes.

The Wolff springs are very high quality. The wire is thin and very strong and the coils are spaced wide. This allows the most room in the tube when compressed without giving up any strength.

The 590 shotguns are very tight on tube space when fully load with 8 shells. The wolff spring is excellent for the 590 and all shotguns. I have tried different lengths in the 590 and 28" is the prefect length for maximum compression strength. Any longer and you won't get the full 8 round capacity.

I also recommend the Vang stainless open end follower for the 590. The Brownells brand metal followers are very good also. The solid end followers take away space and will cost you a round in "most" shotguns.

GC

 

Max,

I've got a Mossberg 500 breacher with a VangComp+1 extension 7 shot (6+1)
Could I use any of these standard springs listed below or do I HAVE to custom cut.

I would go with the Wolff extra power universal 12Ga spring.

The general rule is 8" past the end of the mag tube for full length mag tubes on all shotguns. It should also work a +1 tube extension.

From experience in sizing a couple hundred of the Wolff extra power springs a year. The 28" length is the right size for 18" to 20" bbl shotguns with full length mag tubes.

The Wolff springs are very high quality. The wire is thin and very strong and the coils are spaced wide. This allows the most room in the tube when compressed without giving up any strength.

The 590 shotguns are very tight on tube space when fully load with 8 shells. The wolff spring is excellent for the 590 and all shotguns. I have tried different lengths in the 590 and 28" is the prefect length for maximum compression strength. Any longer and you want get the full 8 round capacity.

I also recommend the Vang stainless open end follower for the 590. The Brownells brand metal followers are very good also. The solid end followers take away space and will cost you a round in "most" shotguns.

GC

Thanks Max

 

The general rule is 8" past the end of the mag tube for full length mag tubes on all shotguns. It should also work a +1 tube extension.

My experience from sizing a couple hundred of the Wolff extra power springs a year is 28" is the right length for 18" to 20" bbl shotguns with full length mag tubes.

Max,
I just ordered the Wolff extra power universal spring. When you mean 28" is the right length for full length mag tubes are you referring to 8 rd. capacity?

My SG (w/the extension) has a 6 rd. mag capacity, so is if fair to say I might need to deduct app. 4.5 inches from the 28"??

Thanks again

 

My SG (w/the extension) has a 6 rd. mag capacity, so is if fair to say I might need to deduct app. 4.5 inches from the 28"??

If you cut it to 28" and bend the ends down a little you will end up with about 27". I would try that and if it's to strong cut 2 coils off of it. I think it will be fine. Keep in mind it will loose a little Length & strength overtime if left fully loaded due to some settling but that will tapper off. The Wolff spring will last a very long time.

This depends on what follower you are using also. The solid followers take away 1/2" of space in the tube for the spring to compress. I use metal open end followers in all of my shotguns. I have used the solid followers before but went back metal ones.

GC

 

My SG (w/the extension) has a 6 rd. mag capacity, so is if fair to say I might need to deduct app. 4.5 inches from the 28"??

If you cut it to 28" and bend the ends down a little you will end up with about 27". I would try that and if it's to strong cut 2 coils off of it. I think it will be fine. Keep in mind it will loose a little Length & strength overtime if left fully loaded due to some settling but that will tapper off. The Wolff spring will last a very long time.

This depends on what follower you are using also. The solid followers take away 1/2" of space in the tube for the spring to compress. I use metal open end followers in all of my shotguns. In my shotguns, I have used the solid followers before but went back metal ones.

GC

I got it.
Thanks again Max, I'll post results