New Haven 600/Mossberg 500

Black Knight · Jun 20, 2012

I just completed a Mossberg Armorers course and got to looking at an old shotgun I inherited from my Dad who inherited it from his boss. The shotgun is a New Haven model 600AB in 12 GA. I was looking at the New Haven and it appears to be made for them by Mossberg (Mossberg butt plate). It does not have a drop safety trigger group. The bolt assembly is slightly different from the Mossberg 500. The slide the bolt sets on is also different. It appears thought that I could get the appropriate Mossberg assemblies and give the gun an upgrade. Supposedly the New Haven model 600AB is the Mossberg 500. The way I figure I could save money by upgrading it instead of buying a whole new gun. Do any of you believe this can be done safely and relatively inexpensive?

Dave McCracken · Jun 21, 2012

First, see if it works with the present parts.

Mossberg 500s date back only to the 60s, not before the Spanish American War.

1KPerDay · Jun 21, 2012

The new haven 600 is similar to the older 500s with one action bar, at least the ones I handled were. You CAN swap the cartridge interrupter for the the new type of interrupter if you want (actuated by the lifter, rather than by the bolt/slide), IIRC. At least the one I worked on you could. I don't know about swapping bolt/slides, etc.

I agree with Mr. McCracken, though. Nothing wrong with the 600 and it may be nicer/smoother than a new one. Plus after you end up buying all the newer parts you'll probably have spent as much as buying a whole 500.

foghornl · Jun 21, 2012

Give it a good cleaning, a tiny bit o' lube here-n-there, then go out and have some bang-up fun with it.

You will probably find that the only thing it needs is shootin'.

303tom · Jun 22, 2012

Black Knight said:
I just completed a Mossberg Armorers course and got to looking at an old shotgun I inherited from my Dad who inherited it from his boss. The shotgun is a New Haven model 600AB in 12 GA. I was looking at the New Haven and it appears to be made for them by Mossberg (Mossberg butt plate). It does not have a drop safety trigger group. The bolt assembly is slightly different from the Mossberg 500. The slide the bolt sets on is also different. It appears thought that I could get the appropriate Mossberg assemblies and give the gun an upgrade. Supposedly the New Haven model 600AB is the Mossberg 500. The way I figure I could save money by upgrading it instead of buying a whole new gun. Do any of you believe this can be done safely and relatively inexpensive?

http://www.hoosiergunworks.com/catalog/cross_reference.html

http://www.gunpartscorp.com/catalog/Products.aspx?catid=7810

New Haven 600/Mossberg 500

Black Knight

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Dave McCracken

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1KPerDay

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foghornl

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303tom

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