Rossi 92 "Puma" - Lessons learned
by J.P. Withers
Hopefully I'm not re-inventing the wheel here but I thought I'd pass along some experience gained from working on the like-new Rossi “Puma” copy of the Winchester 92 SRC I picked up a while back. This carbine is chambered for .38 special/.357 magnum.
First,
Marauder's webpage is a great resource, just saying in case you haven't already found it.
1) Make sure you pin the hammer spring before attempting to remove the hammer screw. If you don't do this you can still get the screw out but you will bung-up the threads (embarrassed shrug).
2) As others have said, the magic word for this rifle is "SPRINGS"! I would never have believed how great the impact of the ejector spring is to the overall functioning of this rifle. I thought the hammer spring would have a big impact but was very surprised about the ejector spring.
The original (heavy) ejector spring made the rifle pull, chamber, and eject everything I fed it (including some step nosed LSWC rounds) but made the lever action so heavy I had to put a leather wrap on the lever to keep from bruising the back of my index finger. Looking at the rifle you'd think the resistance was coming from the locking bolts... it doesn't, it's totally the ejector spring inside the bolt.
(Safety tip, DO NOT MESS WITH THE LOCKING BOLTS they set the headspace for the rifle)
A much lighter aftermarket ejector spring made the rifle cycle as slickly as you can imagine. It also caused my particular rifle to have trouble cycling the longer .357 rounds and also have random trouble ejecting any type of rounds. (EDIT: found a burr on the bolt face that was causing the trouble, the spring is, in fact, just fine for the rifle).
I don't personally recommend this, but if you intend to try the "cut and expand" method on your springs (see
Bull Schmitt's instructions about 1/2 way down the page here...) Bull Schmitt's Instructionsthen have extra ejector springs handy -BEFORE- you start experimenting or you'll sit idle for a while - while you get new ones. WEAR SAFETY GLASSES when working with springs!
The original hammer spring is too damn heavy. Don't bother messing with it, just buy a replacement at Brownells.
If you feel the need to remove the cartridge guides, inspect the left one (with the swivel on it) carefully before re-installing. If the swivel pin drops down even a tiny bit the part will NOT seat back in correctly (even though it looks like it's in place it acts like it is shimmed out) and NOTHING will feed. I spent about an hour of frustration before I figured that one out.
Morgan Astorbilt made a very good suggestion about thinning the extractor just a bit to reduce the resistance it creates just before the bolt finishes closing. In my particular case I like that last solid "click" as it slams home so I didn't modify that at all on my gun.
Guess that's about it for now.
JP
EDIT: more to the adventure. Let me tell you about the wonder of White Lithium Grease! Most of this rifle works fine with your favorite oil but if you take some white lithium grease and put a thin film all over the locking bolts (especially the front where they "lock" the bolt forward), the sides of the bolt, and the swivel pin for the hammer, you will suddenly have the slickest 92 you ever imagined. My 92 now cycles as smoothly as it did with the "too light" ejector spring.
Final Edit 7/3/2006 - Post shooting range testing. Took the 92 to the range and the final verdict is 5 stars and two thumbs up! I ran 20 cowboy .38 special RNFP and 20 cowboy .357 RNFP through it as fast as I could with nary a hiccup. Then I put 20 full power .357 mag JSP then followed with 20 full power .357 JHP. I had one JHP round catch slightly on the edge of the chamber but a gentle shake and it dropped right into place and we were off and running again. Cycles smooth as a baby's bottom and kicks those shells right out of the way when it's done with 'em. Accurate as hell too especially considering how fast I was shooting.