Barnard P Action Ball Bearing

[Killick]

Lost the ball bearing at the back of the P action bolt that sits on the firing pin sleeve shroud and is captured by the end cap.
What size is the ball bearing. I presume its stainless steel or chrome.

 

[338 Mollett]

.250

 

[hpshooter]

Most likely hardened tool steel. Seek out a bearing supply house or look on the internet for McMaster Carr or Granger for a real ball bearing ball or .250 gauge ball to replace your original. Big box hardware stores have assortments of balls but they are of unknown origin and hardness.

 

[Tricky5225]

Most likely hardened tool steel. Seek out a bearing supply house or look on the internet for McMaster Carr or Granger for a real ball bearing ball or .250 gauge ball to replace your original. Big box hardware stores have assortments of balls but they are of unknown origin and hardness.

Go down to your local bicycle shop. They should have an assortment of ball bearings that are used for wheel bearings, headsets and older bottom brackets.

 

[Killick]

Got the lowdown from John Whidden. They’re 6mm, on their way, delivered tomorrow.

 

[47WillysGuy]

Got the lowdown from John Whidden. They’re 6mm, on their way, delivered tomorrow.

Also MacMaster Carr: If John's get lost in shipping. UGH!

6mm

-0.0025mm to 0.0025mm

Hardened

50

9292K41

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[td]

5.87​

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[338 Mollett]

Got the lowdown from John Whidden. They’re 6mm, on their way, delivered tomorrow.

Interesting ! That is who I called when I lost mine a few years ago and was told .250 .

 

[Killick]

Interesting ! That is who I called when I lost mine a few years ago and was told .250 .

Not sure how critical it is as the trigger falls (dry fire) without any BB.
Installed the 6mm BB. Question: My BB is recessed @.2" under the bolt end cap. Is that where your's sits?

 

[338 Mollett]

I'm sure it is different by .007 but I never noticed any adverse effects . I will measure it after supper .

 

[clowdis]

I don't know why there would be a .250 ball bearing in a metric action. On the other hand, for what it does, I don't see why either wouldn't work.