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Discussion Starter #1 (Edited)
My new model Single Six (blued, fixed sight, 5 1/2") was made about five years ago and is a nice companion for my Tyler New Vaquero (blued/case, fixed sight, 4 5/8", .357/9mm)
The NV has about 1,500 rds fired, the SS has about 300.

Despite having slightly different barrel lengths, the guns balance nearly the same for me. Sight pictures are identical.
But the SS had a heavier trigger pull, and heavier cocking effort that annoys my thumb in long shooting sessions.

Despite understanding the disadvantages of a lighter hammer spring, I replaced the SS 23 lb stock spring with the Wolf 19 lb. The reduction in trigger pull was... nothing! Identical to stock hammer spring. But my thumb is much happier.

Then I replaced the stock trigger spring with the Wolf 40 oz unit. I don't know the "weight" of the stock spring, but figured Wolf's other 30 oz version would be too light. That was correct, the 40 oz trigger spring still drops the SS pull weight a bit below the NV. I'll shoot it a while, check the weight again, and decide whether to bend the legs on the Wolf spring a little to increase the pull, or put the stock spring back in and bend the legs the other way to reduce the pull.

I'll also need to verify that ignition is still reliable with different brands of ammo, including .22 Mag; and that the increased lock time hasn't ruined my accuracy.
Surprisingly, the lighter springs did not increase creep or roughness in the trigger pull, it was excellent before and remains excellent now.

Here's my weights, measured at 2/3 of the way down the trigger and at the very tip, average of 10 pulls each with a recording scale-.
Measuring 2/3 of the way down is most realistic, measuring at the very tip produces unrealistically low numbers but it's easy and very consistent for comparisons.

New Vaquero (stock, unless Tyler changed something)
2/3 down trigger: 3.0 lbs
Tip of trigger: 2.0 bs

Single Six- stock
2/3 down trigger: 3.7 lbs
Tip of trigger: 2.9 lbs

Single Six- 19 lb hammer spring
2/3 down trigger: 3.7 lbs
Tip of trigger: 2.9 lbs

Single Six- 19 lb hammer spring and 40 oz trigger spring
2/3 down trigger: 2.6 lbs
Tip of trigger: 1.8 lbs
 

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Thanks for the geek work!
Much obliged, as I have three of these.
 

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I have found that the Wolff 30 ounce trigger return spring is all that is needed. I leave the mainspring alone to ensure a short lock time. My trigger gauge shows 2-2.25 pound trigger pulls across all of my Singles-sixes, Blackhawks and Super Blackhawk with just this simple change.
 

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I echo Delta Rose, for my Single-Ten, which has the same mechanics as a Single-Six. The 30 oz. trigger return spring is MUCH more appealing to my engineering mind rather than unhooking one leg of the stock spring.
 

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Yes, another vote for the Wolff 30 ounce trigger return spring, that's what's in my Single-six.
 

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Discussion Starter #7
Today I was able to do some testing, but had no rest available and so all firing was off hand.

24 rds of recent Winchester SuperX HVHP fired perfectly and produced a nice group.

24 rds of older Remington Golden Bullets had one dud, which did not fire when struck again in the same spot. Similar to my previous experience with this ammo. Group was noticeably larger.

Magnums:
12 rds of CCI Maxi Mags 40 gr fired perfectly but the group was rather loose.
12 rds of Winchester SP 30 gr fired perfectly, but another loose group.

So it appears the reduced power hammer spring fires everything except the one junky Golden Bullet. Whether the loose groups are from weak primer hits or just the combination of this gun and ammo, will require further testing.
 

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I have a few hundred rounds of Remington Thunderbolts that I need to burn through, but the thought of all the duds has me leaving them in the ammo can...for over 20 years already.
 

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I have a tin box of 475 Remington .22 LRs that I haven't fired a single round of. The box alone is bringing sixty dollars on eBay. Every round is still in place for the same reason as yours ... I hate taking duds out of my 10/22.

I bought the whole box, entirely full of ammo, around 1980 or so.
 
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