Enfield Revolver light hammer strikes

Baal

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So I've got a 1930 Enfield revolver in .38 S&W. I've put a hundred rounds through it and accuracy is quite good. The timing is fine and the lock up has just a tiny bit of wiggle. I've have 12 instances of the hammer striking too lightly to fire. The firing pin protrusion is within spec. Do you think this is a main spring issue? Any ballpark ideas on how much it will cost to fix? It's a $250 gun so I don't want to spend much. Any input appreciated.
 
Clean it first, could have interference in there. Could be a mainspring, sometimes the can be tweeked to get it serviceable again.
Replacement not sure of the cost.
Be well
 
Interesting..I have 2 enfield revolvers and both firing pins are heavy hitters. I'll have a look when I get home from work and see if I have any ideas for you.
 
Take a good look at the ammo before blaming the hammer spring. Particularly if it's in spec and feels strong.

Are the primers seated deeply into the pockets? Are the rims thinner? (Unlikely but something to consider. )

Is it possibly a headspacing issue in the gun? One chamber slightly deeper than the rest?

Also maybe take it apart and see that there's nothing wrong internally and nothing in the workings.
 
The ammo is new manufacture Remington .38 S&W.

There's some back and forth play in the cylinder when not cocked. None noticeable when locked up after pressing the trigger.

The light strikes have happened in at least three of the chambers. Possibly more as I didn't take note the first several times.

Oh, and the cylinder is not original to the gun. It's been reserialed to match, with the original number (1500 higher) struck out. So possibly that's an issue.
 
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The rims on the brass measures 0.055" as per spec.
The firing pin protrusion is 0.040" (spec is 0.040" - 0.050")
The gap between recoil plate and cylinder is 0.082". Dunno if this is within spec or not.
 
I found some the specs in my Skennerton book. The gap is supposed to be .06" - .066". If my math is correct, your primer strike is .013 when it should be .029 minimum.

Are the primers seated flush or below the case head?
 
So it turns out that the gap between the recoil plate and cylinder is way out of spec. It's 0.082" and the max should be 0.066"". It has been suggested by Peter Laidler that I increase the striker protrusion from its current minimum spec of 0.040" to the maximum of 0.050" by having the "beater face" of the hammer thinned down.

I understand that Webleys with shaved cylinders can use adapters to bring them back up to original spec. I'm considering having a similar adapter made for this Enfield.
 
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