Taylors Conversion cylinder - rough cylinder pin hole

[Flinch Morningwood]

Just got my second conversion cyclinder (from Taylors) for my 1858 Pietta...and the cylinder pin hole looks really scored...like there was a burr on the drill bit and it scored it all the way down.  Fairly deep scorring, like polishing wouldn't get it out.

Is this normally how they come?  Is it purposely done to hold the lube?

I don't seem to recall my first being like this....

[Halfway Creek Charlie]

I don't recall any done this way either, but it might be a New and Improved innovation. Does it have a defined pattern, or just a scoring? Might work realy well. Who knows?

[Flint]

If it's too deeply scored, don't polish it out, if it's burred, deburr it only.  If it's spiraled, it might make a good grease groove.

Over polishing it to the bottom of the scoring would probably make it too loose a fit.

[Flinch Morningwood]

I looked at my older one at...it also had some scoring (though not as bad as the new one), so I figured this was just a by product of the production process.  Neither one of them had the regular look of the scoring being done on purpose.

I polished the cylinder pin hole, not to the bottom of the scoring but just to polish the surface and "round over" the scoring so it wouldn't gring away at the cylinder pin.  I used an appropriate size bore mop with green polishing compound on a drill and it worked pretty well.  Who knows, maybe the grooves will hold the lube better...

I also slightly chamfered the leading cylinder pin hole and polished/flattened the front and back of the cylinder on a hard black Arkansas stone...At half cock, it free spun pretty well after that (with a good coat of ballistol) with no back/front play in the cylinder.

I tend to polish the leading outside edge of the cylinder as well.  This very slight easing of the edge seems to make holstering the pistol a bit easier.  I also hit the knurling on the back plate with my hard felt wheel...not enough to loose the knurling but to take the sharp points off - they were chewing up my holsters a bit.

Yes, I am a tinkerer...

[The Avocado Kid]

Little Al,I have an 1858 Remy with an R&D conversion cylinder .45 cal. and my cylinder pin hole looks smooth,I made the purchase about two months ago and the gun is a Pietta.I made the purchase of the revolver then got the cylinder from R&D. Dusty.

[Flinch Morningwood]

Well...fired both of the conversions at the range this weekend and they worked like a charm...even with a decent load of 28 gns FF Goex and a PRS 250 Big Lube Bullet, went thru 15 rounds (3 cyliinders worth) each without cleaning and had no hang ups.


I think the scoring did help hold the Bore Butter in the cylinder pin hole...maybe they should look into that....