New Model .45 Blackhawk 'double primer strikes' ?

[hc18flyer]

On Sunday I shot some loads using 18.5 grains of Accurate #9. I noticed a faint second indentation on the Primer? I was still under max for Tier 3 Ruger loads and the chrono verified velocity . I plan to back down a grain and shoot a few more. I don't need max loads. Is this a more serious issue? I am also working up a parallel load for hunting with 260 and 270 grain boolets using Aliant 2400. hc18flyer

[dubber123]

Lightened hammer spring by chance?

[hc18flyer]

I did replace the springs with a Wolff set.

[ShooterAZ]

Not a serious issue, the hammer spring is still too weak for your load. 24 pound will fix it, and you will have faster lock time. I switched to 24lb after having the same problem with heavy loads with the LEE C430-300RF in my 44 SBH.

[osteodoc08]

The hammer is just rebounding and double striking. Consider changing back to a factory spring

[tazman]

Do you happen to have a picture of that you could post?
I have never seen that happen and am curious.

[ShooterAZ]

It's called "hammer bounce". It usually occurs when the hammer spring is fatigued (worn out), or when the hammer spring has been replaced with one lighter than factory spec and heavy loads are used. It's an easy fix.

[tazman]

It's called "hammer bounce". It usually occurs when the hammer spring is fatigued (worn out), or when the hammer spring has been replaced with one lighter than factory spec and heavy loads are used. It's an easy fix.

Does this happen only on heavy recoil handguns or even on lighter loads(38 special).

[osteodoc08]

Does this happen only on heavy recoil handguns or even on lighter loads(38 special).

I've only seen it happen on heavy recooking guns or one with heavy load and very light weight gun like a 357 Mag in an airlite

(Tazman, sorry about the edit. I meant to hit reply with quote and it somehow brought me to your message. No edit actually done)

[tazman]

No harm done. You gave me the answer to my question which is what I wanted.

[gwpercle]

I did replace the springs with a Wolff set.

The lighter springs are letting the hammer bounce after firing and thus giving that second indentation. I would go to a heavier hammer spring.
Gary

[jrayborn]

I would ignore it. It means nothing so long as the revolver has the trigger you like...

[gray wolf]

It's called "hammer bounce". It usually occurs when the hammer spring is fatigued (worn out), or when the hammer spring has been replaced with one lighter than factory spec and heavy loads are used. It's an easy fix.

excellent answer

[bisleyfan41]

A lot of folks like to install the complete Wolfe kits in the Blackhawks. I've found all you really need for a decent trigger is the lighter trigger return spring along with some light polishing of select internal surfaces. About a half hour with some extra fine stones and paper and a $7 Wolfe trigger return spring does wonders.

[dubber123]

The factory trigger return spring can easily be reshaped for free, and will reduce weight by a bunch all on its own. I find Rugers hammer notch way too deep. and filled with tool marks. I reduce the hammer notch by 50% to start, and stone out all tooling marks on the notch and the trigger sear surfaces. I have done quite a few, and you can get a crisp, creep free trigger for just your labor. I have gone as light as 1.5#, with a safe trigger that can't be pushed off. I generally shoot for 2.5#

The hammer fall is painfully slow on Rugers, and putting in a weaker main spring just slows it further, along with lighter strikes. I know the spring kits are popular, I just think there is a better way to a good trigger.