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View Full Version : Cast Boolit weight and Rossi 92 twist rate .357



MediumCore358
06-01-2015, 02:47 AM
Srry if this has been asked before but I'm wondering how the Rossi 92 in 357 handles certain bullet weights. I like Lee products Based on their availability affordability quality. Thinking about collecting and using some molds, I'd like to have a light medium and heavy mold for .357, is the 105grain swc bullet too light even if I keep the velocity down? What about the 125 grain RFN? I currently have the 158 grain swc gas check even t:wink:hough the 158 grain RN has better ballistics and feeding. Look forward to your response. Thanks!

LoopSoosStroop
06-01-2015, 06:54 AM
The Rossi 92 twist rate is really slow (1 in 30"), ideal for cast boolits.

158's work really well, but almost nothing will lead with that twist, you could go much lower safely.

I shoot 158 Lee boolits in mine.

cajun shooter
06-01-2015, 09:25 AM
You may want to look at the Molds that are made for Lever action rifles used in the Cowboy action classes, like SASS.
I have owned several Rossi rifles and they all perform great when used with the proper components. The 357 Rossi rifles are very accurate with bullets from 130-170 range. Several mold makers like RCBS, which has a 140gr. and 158 gr. cowboy 38 style bullets for lever action rifles. Lyman has a few cowboy bullets and Tom at Accurate has several designs.
I know these molds are more than the cost of the Lee molds but they will also give you better style bullets that are designed for your lever action rifle.
I would also look into the lubes made by forum member Lars under the name of White Label. Later David

plainsman456
06-01-2015, 11:05 AM
The brother in law had one and it would eat the 158swc all day long.
These were without gas checks,we tried some round nose but the damage done with the swc is what sold the show.

The lube i use for all of my cast loading is 2500+,never have to change out the lube.

Jupiter7
06-01-2015, 11:16 AM
I've run thousands of the 358-156(mine cast 155gr). Nary an issue, accurate enough for short range hunting and plinking.

fecmech
06-01-2015, 02:11 PM
When run at magnum velocities (1500-1700 fps) I've had no trouble with accuracy with bullets in the 120-170 gr range. The Lyman "Keith" 358429 which is a very long bullet will hold 3-4 moa @ 100 yds out of both my Rossi's at 1650 fps. If I try and shoot that bullet with .38 level loads in the 1100-1300 fps range it won't group under a foot at 100 yds. For lower velocity target and plinking the Lee 125 RF, Lee 120TC and the Lee 158 TLSWC are very accurate and my goto bullets in the Rossi's. It all depends on the accuracy level you want. If 3-4" 50 yd groups make you happy pretty much anything works in the Rossi's. If you want that level at 100 yds the shorter and lighter bullets make that easier to achieve.

A pause for the COZ
06-01-2015, 11:26 PM
Well..... If you want to make your friends look silly as you pop clay pigeon after clay pigeon off the berm at 100 yards with out missing.

Try the LEE 125gr rnfp in 38 special cases, ahead of 5gr of Herco or 4 gr of Unique.

Most accurate load i have shot from my M92 bar none.

This was at 100 yards with a Scout scope. Sand bagged on the bench.

http://i33.photobucket.com/albums/d66/Kelly2215/100_8371.jpg

Pretty much other than heavy hunting loads. This is about the only load I shoot in it now.

http://i33.photobucket.com/albums/d66/Kelly2215/100_8334.jpg

The 38 special cases do not feed too well from my M92. But for some reason the same load in 357 mag cases does not shoot quite as well. They shoot well, just not this well.
So i put up with feeding them one at a time by hand.
I use the same load in 357 mag cases when shooting good is well enough and feed reliability count in the fun.

MediumCore358
06-01-2015, 11:51 PM
Thanks for the info guys. I think I'm gonna get the Lee 125 gr. RNFP first.