Reduced Power Main Spring in S&W 19?
- Thread starter HAWKEYE10
- Start date
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Take it out & shoot it first. You may be happy with just the rebound spring.
If you use this M19 for self defense, IT MUST SHOOT, FIRST TIME, EVERY TIME!!!!!
If you use this M19 for self defense, IT MUST SHOOT, FIRST TIME, EVERY TIME!!!!!
bountyhunter
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Make sure the trigger return is still snappy if you are using the lightest RB spring. The rebound spring has to set the hammer back against the mainspring after the hammer falls.
+1 on not installing a reduced power mainspring on a defense gun. The typical RP mainspring is about -30% in strength compared to stock. It will ignite most ammo.
+1 on not installing a reduced power mainspring on a defense gun. The typical RP mainspring is about -30% in strength compared to stock. It will ignite most ammo.
handgunner356
Member
I always check the rebound spring by rapid dry firing the gun to make sure it cycles smoothly. Too light of a rebound spring will cause the gun to jam up during rapid firing. Also rapid DA live fire will tell you if the hammer spring is too light, the hammer doesn't swing as much of a arch in DA as SA so often the gun will work in SA mode but then light strike in DA.
bountyhunter
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It can if it gets too light. If you use a stock (full length) strain screw and a new Wolff reduced power spring, it will light nearly all the ammo out there.
Alk8944
US Veteran
Hawkeye,
This is your other post copied direct from it:
"After putting a 13# rebound spring in my model 19 yesterday
I went to the range today and test fired it. I had several misfires.
I did nothing to the main spring and the adjusting screw is all the
way in. I am using reloads with CCI primers. I am not a gunsmith
but I didn't think I would get misfires. In the kit I bought there is
two more springs a 14 & 15 # you think I should try them? Again
this is a target gun not used for self defense. Don "
You are already getting mis-fires with the stock, or supposedly stock mainspring, and now you ask if you should put a reduced-power mainspring in the gun? What is it you don't understand about the dynamics of a revolver?
bountyhunter
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If you get misfires with a stock mainspring, there are two possible reasons:
1) Somebody ground the end off the strain screw (that's why I never grind them).
2) Somebody bent the mainspring slightly more curve to reduce spring force.
A new strain screw and mainspring will fix your gun.
1) Somebody ground the end off the strain screw (that's why I never grind them).
2) Somebody bent the mainspring slightly more curve to reduce spring force.
A new strain screw and mainspring will fix your gun.
OP
HAWKEYE10
Member
Thanks Bounty Hunter. I looked at the main spring
and then compared it to another gun I have, and it
was bent. I put a good factory spring in it. Went to
the range today and it didn't miss a lick. I haven't
had that gun but a few weeks and ghanging the rebound
spring and mis fires happened at once. Thanks for the
good advice. Don
and then compared it to another gun I have, and it
was bent. I put a good factory spring in it. Went to
the range today and it didn't miss a lick. I haven't
had that gun but a few weeks and ghanging the rebound
spring and mis fires happened at once. Thanks for the
good advice. Don
