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Hammer spring

Henry's new single shots
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Hatchdog
Ranch Foreman
Posts: 6281
Joined: Mon Jan 06, 2020 5:04 pm
Location: Deer Park, WA
United States of America

Re: Hammer spring

Post by Hatchdog » Tue Feb 04, 2025 10:05 am

Hickok wrote:
Tue Feb 04, 2025 8:44 am
Well, I guess I will have to amend my previous post. Finally got to shoot my Henry single shot 30-30. With the Grovtech metal hammer extension on, the rifle would only fire 50 % of the time. With the hammer extension off, it was good for about 9 out of 10.

My rifle is the newer type with one hammer spring. Out of the box, the trigger pull is 3 to 3 1/4 pounds by my trigger gauge.

I took the spring assembly apart, and added a .10" thick washer/shim of proper diameter in the tube that contains the hammer spring. It rests in the bottom of the tube that the stock-bolt threads into....then the spring sets on top of it, and then the plastic cup that the hammer strut connects to.

This brought my trigger pull up 8 oz/1/2 pound...now it is 3 3/4 lb, give or take. Hopefully, this will help with light primer strikes. Have not got the chance to shoot yet.

I may order some #54MY44 springs, rated 37-38 in lbs. They are pricey for 10 springs!

It seems the weight of the hammer extension greatly affects the primer strikes. Ranger Point Precision has an aluminum hammer spur that should be lighter than the Grov-tech hammer extension. I will also try one of these.

Any advice is welcome.
Sorry can’t give you any advice as you are already way beyond my capabilities but I’ll share that my Marlin 39-A has the same issue with light strikes with the hammer extension installed. Without its 100% ignition and with it’s probably around 50%. Thankfully there’’s enough space between the scope and the hammer that I can comfortably use it without the extension. Good luck on yours, sounds like you are getting the issue worked out.
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Hickok
Tenderfoot
Posts: 10
Joined: Tue Nov 16, 2021 1:08 pm
Location: Canaan Valley WV
United States of America

Re: Hammer spring

Post by Hickok » Thu Feb 06, 2025 3:17 pm

Hatchdog, thank you for the response and the encouragement!

I contacted HENRY and they want the rifle returned for warranty work. They will sent a mailing voucher for me to print out. I credit them with a fast and prompt reply. I sure hate to send it back, but it is probably the beat thing to do.

Ken "Hickok"
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