Nipple Question...

Altered Ego · December 9, 2011, 07:02 PM

I just received a pack of Treso replacement nipples for my Ruger Old Army and there is a significant difference in the flash channel diameters between the old ones I'm replacing and the new Treso ones. The old ones have a .046" diameter opening and the new Treso ones are less than .040" (My drill bits sizes only go down to .040"). I'm wanting to make sure these replacement nipples have the correct flash channel diameter. Any help would be appreciated.

Andy Griffith · December 9, 2011, 07:38 PM

I'm not certain on the Rugers, but on the Uberti and Pietta Treso replacements they are smaller, but more importantly- the flash hole at the base of the nipple is much smaller.

Fingers McGee · December 9, 2011, 11:41 PM

Altered Ego,

The reason for the smaller orifice is to reduce blowback that has a tendency to blow expended caps off the nipples. The smaller diameter orifice is correct.

Altered Ego · December 10, 2011, 01:24 AM

Thanks for the replies!

Rifleman1776 · December 10, 2011, 09:48 AM

Not only that, a smaller exit hole concentrates the fire (reportedly) giving better ignition. Treso is the standard for most serious ml shooters. I'm confident you will get good service from them.

December 9, 2011, 07:02 PM	#1
Altered Ego Member Join Date: December 24, 2008 Posts: 22	Nipple Question... I just received a pack of Treso replacement nipples for my Ruger Old Army and there is a significant difference in the flash channel diameters between the old ones I'm replacing and the new Treso ones. The old ones have a .046" diameter opening and the new Treso ones are less than .040" (My drill bits sizes only go down to .040"). I'm wanting to make sure these replacement nipples have the correct flash channel diameter. Any help would be appreciated.

December 9, 2011, 07:38 PM	#2
Andy Griffith Senior Member Join Date: May 14, 2009 Location: Macon Co. NC Posts: 591	I'm not certain on the Rugers, but on the Uberti and Pietta Treso replacements they are smaller, but more importantly- the flash hole at the base of the nipple is much smaller. __________________ Barney Fife: "Nip it, nip it, nip it!" Andy Griffith:"Oh now Barn'...."

December 9, 2011, 11:41 PM	#3
Fingers McGee Senior Member Join Date: March 19, 2008 Location: High & Dry in Missouri Ozarks Posts: 2,113	Altered Ego, The reason for the smaller orifice is to reduce blowback that has a tendency to blow expended caps off the nipples. The smaller diameter orifice is correct. __________________ Fingers (Show Me MO smoke) McGee - AKA Man of Many Colts - Alter ego of Diabolical Ken; SASS Regulator 28564-L-TG; Rangemaster and stage writer extraordinaire; Frontiersman, Pistoleer, NRA Endowment Life, NMLRA, SAF, CCRKBA, STORM 327, SV115; Charter member, Central Ozarks Western Shooters Cynic: A blackguard whose faulty vision see things as they are, not as they should be. Ambrose Bierce

December 10, 2011, 01:24 AM	#4
Altered Ego Member Join Date: December 24, 2008 Posts: 22	Thanks for the replies!

December 10, 2011, 09:48 AM	#5
Rifleman1776 Senior Member Join Date: April 25, 2010 Location: Arkansas Posts: 3,309	Not only that, a smaller exit hole concentrates the fire (reportedly) giving better ignition. Treso is the standard for most serious ml shooters. I'm confident you will get good service from them.