small firing pin

[ohiobenito]

i have a 7.62*39  handi rifle.  THis thing has the lightest trigger I think I've ever pulled.  The firing pin is much smaller in diameter than the one on my 45/70 handi or any of my nef shotguns.  My post asks two questions:  1.  I know about the problem shooting mil-surplus ammo,  but every so often I have to drop the hammer twice on factory ammo or reloads.  I would like another barrel for this rifle.  Does the caliber need to have a rim on the case to help with the light primer strikes?  Are there any calibers that would give me problems being matched with this smaller firing pin?
thanks guys!!

[necchi]

My experiance with this;
"but every so often I have to drop the hammer twice on factory ammo or reloads."

The guy's here help me understand this same problem, the trigger on handi's need to be pulled fully back. Even if it's a light trigger, it still needs the full travel, it has to do with the transfer bar.
Comming from a long period of Trad ML's using spring loaded "set" triggers, this was an adjustment for me. It took conscious effort to gain this, new too me, "trigger control".

[Macphoto]

I agree with the transfer bar issues and pulling the trigger fully.  There is yet another possibility.  I found that my Ruger Mini 30 would often misfire with military loadings, but was fine with commercial factory stuff.  Mil Spec primers are very hard and are designed that way to be safer with rifles like SKS that have no firing pin spring.  Just a thought that maybe since your trigger pull is so light, the hammer spring was shortened as part of a trigger job.

[quickdtoo]

Weak H&R hammer springs are a known issue even on new firearms, it wouldn't hurt to replace it, Wolff makes good springs available direct from them or Midway. Firing pin projection should be checked too, it can easily be extended a little by removing a little from the face of the hammer where it stops against the frame, pin projection should be .040"-.050" for reliable ignition on a firearms with in-spec headspace.

Tim

[ohiobenito]

thanks to all for your expert advice,  I bet I'll chock the missfire to "operator error" .     do any of you think I'd have a hard time having a 243 or 223 on this frame?.

[cwlongshot]

I have needed to "adjust" nearly all of my hammers as Tim describes. I simply make it part of my trigger job.    A couple get the new springs and hammer mods. Measure your pin protrusion..


CW

[Lon371]

thanks to all for your expert advice,  I bet I'll chock the missfire to "operator error" .     do any of you think I'd have a hard time having a 243 or 223 on this frame?.

 I am assuming it is an SB-2. If so, you can put about any barrel on it with out an issure.

LOnny