Need info regarding bbl fitting

[Don Strelioff]

Would it be possible to fit bbl’s stamped no 1 onto a 1 1/2 size action

[B. Dudley]

There is no interchangeability between frame sizes.

[Don Strelioff]

Originally Posted by Brian Dudley

There is no interchangeability between frame sizes.

Thanks for the info . So much for that plan

[Bill Murphy]

#1 and #1/2 frame barrels can be interchanged, in my experience.

[Dean Romig]

Page 45 of the Serailization book tells us that the only difference between the 1-frame dimensions and the 1 1/2-frame is the firing pin separation being 1/16” different... meaning the pin strike might be 1/32” off center... which is probably negligible.

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[B. Dudley]

Originally Posted by Dean Romig

Page 45 of the Serailization book tells us that the only difference between the 1-frame dimensions and the 1 1/2-frame is the firing pin separation being 1/16” different... meaning the pin strike might be 1/32” off center... which is probably negligible.

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I recall seeing one of those ridiculous gunsmithing competition shows where one group cobbed together a Parker hammer gun using different frame sizes for the barrels and frame. In firing the gun, they dealt with light strikes and misfires about 50% of the time. Not quite negligible.

[Dean Romig]

Apples and oranges. Too many variables there. We know the difference to be exactly 1/16”/2=1/32” so I’m more inclined to believe it very well could be negligible.

The only to know for sure is to try it.





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[B. Dudley]

I cannot believe what you are suggesting...

[Dean Romig]

Originally Posted by Brian Dudley

I cannot believe what you are suggesting...

If it were dangerous I certainly wouldn't suggest it. The only thing it might be "dangerous" to would be somebody's wallet.





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[Big D]

I embarrassed myself years ago by snapping a set of M21 20 gauge barrels on a 12 gauge M21 frame. The hammer strike was off center enough that the gun didn't fire. One grouse was very happy/lucky