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Single Shot Hammer Spring Modification

Henry's new single shots
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ESquared
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Re: Single Shot Hammer Spring Modification

Post by ESquared » Mon Aug 12, 2019 9:52 pm

Yornoc3 wrote:
Mon Aug 12, 2019 7:30 pm
roddy,

My 45-70 is right around 3.5 to 4 lbs trigger pull weight, and I don't find the hammer cocking resistance to be excessive, either. On the other hand, the new model .308 of my son-in law and my 30-30 both could be lifted by the trigger when cocked (with a snap cap in the chamber) without ""firing. That 'd be around 7lbs, I'd say more. Replacing the mainspring, leaving the smaller one in place, cured 'em both; they're now under 4lbs in trigger pull weight.
I'll offer again: I've got a half-dozen of these 38# mainsprings I'm willing to share. Just send me a PM and I'll ship you one to try out.
1 x
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Yornoc3
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Re: Single Shot Hammer Spring Modification

Post by Yornoc3 » Wed Aug 14, 2019 9:36 am

That, too, is good to know. Thanks! I'll be watching for any "fail to fires", particularly on the .308, when we get around to shooting those two rifles with the replaced lighter springs (Labor day weekend?). I have wondered if some ammunition may have harder primers these days, particularly loads that often are used in semi-auto actions, like .223 and .308. Or maybe just in general for liability reasons, like the use of the stronger springs in the rifles in the first place.
0 x

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roddy
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Re: Single Shot Hammer Spring Modification

Post by roddy » Wed Aug 14, 2019 6:38 pm

ESquared wrote:
Mon Aug 12, 2019 9:52 pm
Yornoc3 wrote:
Mon Aug 12, 2019 7:30 pm
roddy,

My 45-70 is right around 3.5 to 4 lbs trigger pull weight, and I don't find the hammer cocking resistance to be excessive, either. On the other hand, the new model .308 of my son-in law and my 30-30 both could be lifted by the trigger when cocked (with a snap cap in the chamber) without ""firing. That 'd be around 7lbs, I'd say more. Replacing the mainspring, leaving the smaller one in place, cured 'em both; they're now under 4lbs in trigger pull weight.
I'll offer again: I've got a half-dozen of these 38# mainsprings I'm willing to share. Just send me a PM and I'll ship you one to try out.
I would take you up on that, but shipping stuff across the border can be pretty dicey...with my luck, I'd end up with a $50 'brokerage' fee, lol.
0 x

Yornoc3
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Re: Single Shot Hammer Spring Modification

Post by Yornoc3 » Tue Sep 03, 2019 10:34 am

We finally got around to sighting in the .308 of my S-i-L and my 30-30 over Labor Day weekend. The .308 dialed in nicely, however, it did have one fail to fire, albeit there seemed to be a solid primer strike, so go figure. The 30-30 fired just fine, but the gun show scope (older 2.5X Burris) seemed to not be adjusting properly, so I quit while I was still ahead. I'll check out the scope, if I decide I can't trust it, I'll replace it with a 2.5X Leupold ultralight (like I probably should 'a done in the first place ;) ).
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BigAl52
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Re: Single Shot Hammer Spring Modification

Post by BigAl52 » Tue Sep 03, 2019 10:44 am

Just a thought Yornoc3 I have had issues with one of the Burris scopes before and took it to them. They fixed it with no questions at all. Im lucky though no shipping for me there right near where I work everyday.
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Yornoc3
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Re: Single Shot Hammer Spring Modification

Post by Yornoc3 » Tue Sep 03, 2019 7:27 pm

BigAl52,

I thought that I'd send it back to Burris if I find that it's not tracking correctly, thanks for the reassurance that they'll still take care of it. It's in real nice shape, so maybe it'll free up with some exercise. I know that the springs that maintain tension on the erector tube can weaken and/or stick on older scopes, so first I'll give it a workout on a rimfire rifle and see what happens.
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