Lyman 358477 (357 Magnum)

[38SPL HV]

Loaded a classic....Lyman 358477 in 357 Magnum cases.

Cases: Starline 357 Magnum
OAL: 1.510” per Lyman cast bullet data
Bullet: Lyman 358477, 155 gr as cast
Powder: 11.0 grs of 2400
Primer: CCI-500
Crimp: Lee taper crimp 5/8 turn after solid case mouth contact
Velocity: 1,030 FPS (Ruger 4 5/8 BH)
Comments: pleasant shooting with very good accuracy. A 38-44 load in 357 Magnum cases. Good working load.

Pictures:

 

[ArchAngelCD]

IMO that bullet is seated too beep into th case.

Is there reason why you didn't crimp into the supplied crimp groove? Of course I could be wrong.

 

[38SPL HV]

IMO that bullet is seated too beep into th case.

Is there reason why you didn't crimp into the supplied crimp groove? Of course I could be wrong.

I like to follow published load data to the “t”... bullet is seated 1.510” OAL per Lyman’s latest load data. 11.0 grs 2400 is starting load for this bullet. Shoots very accurately and velocity obtained with the charge indicates no excessive pressures.

 

[Rule3]

I like to follow published load data to the “t”... bullet is seated 1.510” OAL per Lyman’s latest load data. 11.0 grs 2400 is starting load for this bullet. Shoots very accurately and velocity obtained with the charge indicates no excessive pressures.

If loading to the "t" then you should have used a Mag Primer and Federal brass (trimmed to 1.280 of course.)

 

[alwslate]

You can get the same velocity with about half the powder. 5.6 grs of
Titegroup or 5.7 grs of Bullseye. Pressures are mild for the .357. I have
never seen any manual that recommends taper crimping and ignoring a
crimp groove in a cast SWC.

 

[pasound]

It is loaded too deep. It's a Keith-style bullet, and needs to be crimped on the top groove.

 

[sza]

The .357 Magnum cartridge diagram in the Lyman book shows the bullet loaded exactly as 38SPL HV as done his--crimped over the top of the front band.

 

[WR Moore]

Sigh, this has been covered in previous posts. If one has a model 27 or 28, the short cylinder prevents crimping in the crimp groove with this, and similar, bullets. The fix, circa 1930 or so, is to seat the bullet deeper, crimp over the front shoulder AND REDUCE THE MAXIMUM POWDER CHARGE.

Now, in this case, the round is being fired in a firearm with a cylinder long enough to crimp in the crimping groove, but there's nothing wrong with what is being done. The technique is different, but not wrong if done correctly. It's also one that can be used if you find yourself with bullets with no cannelure/crimp groove and only a roll crimp die.

 

[Nightowl]

Sigh, this has been covered in previous posts. If one has a model 27 or 28, the short cylinder prevents crimping in the crimp groove with this, and similar, bullets.

Sorry, but I have to disagree with this statement. Your statement does apply to 170 grain bullets, but this one runs in the 155 range, as described. I've loaded thousands of 158 grain bullets and crimped in the crimping groove. I used to mold that same bullet.

While I would not load this bullet that deep, and would use the crimping groove, that light a load probably would still be safe to use. I load up to 14 grains of 2400 with a 158 grain bullet.

 

[308 Scout]

A couple of years ago I traded for a 4-gang 358477 mold. It casts one fine little bullet! A load of 6.0 grs. of Unique averages 1020 fps out of my 4 3/4" SA's and is extremely accurate. From my 20" Rossi carbine velocities run a bit over 1200 fps. This bullet and load has become my all-around day-to-day load.

 

[cowboy4evr]

On post #5 , he mentions 5.6 grs of titegroup or 5.7grs of Bullseye powder . I'm sure this is a typo and should read 4.6 and 4.7 . Regards, Paul

 

[cowboy4evr]

38SPL HV , if that combination is working for you , then stay with it . Regards Paul

 

[4barrel]

I have that Lyman 4 cavity mold and load both ways. The Lee manual has both seating lengths. A slight roll crimp works fine. I use a Dillon and never move the crimp die when crimping in the groove or over the end --even for bnwcs or dewcs. I also have a Lyman 150 grain gas check mold for more rpms.

 

[StrawHat]

Don’t believe I ever used 477 but I did shoot a couple hundred pounds of 358156. A similar 160 grain bullet. It had two crimp grooves. Used the top when when I had magnum brass and the bottom one when i had 38 Special brass. Or sometimes had to crimp at the top band because the cylinder was too short and I did not want to bind up the revolver.

Kevin

 

[gwpercle]

358477 was the very first mould I bought to feed a 357 Blackhawk about 1971 ... and I still have and use it .
Good bullet .
Being a reader of Elmer Keith and Richard Lee not having invented the Factory Crimp Die back then I just rolled a crimp into the crimp groove and for a velocity of around 1000 fps I went with 7.0 grains of Unique . Saving the 2400 for jacketed bullets and a few more fps ...hunting loads .
The bottom line is if this load works for you and your Blackhawk ...then Keep On Keeping On .
Thanks for sharing the details .
I've come across a cast 9mm bullet , NOE 358 - 124 - TC - GC , that makes into an excellent 124 grain truncated cone 38/357 load. Gas check lets it be driven over 1000 fps but ... no crimp groove ...so I use my 9mm Luger taper crimp die to seat and crimp those bullets in 38/357 loads ...it works like a charm ! Taper crimps will hold bullets , in revolver loads , if applied correctly ...so don't be afraid to try those smooth sided bullets you might have lying around !
Gary

 

[Nevada Ed]

Hay, if the 2400 powder works for you, great.........

I usually save it for my maximum loads and will use the faster powders
for my light target loads that burn a little cleaner and also give light recoil loads
in the 984 to 1040fps area, with just 5-6 grs of powder.

 

[38SPL HV]

If loading to the "t" then you should have used a Mag Primer and Federal brass (trimmed to 1.280 of course.)

Per Alliant, do not use magnum primers with 2400. The “t” is a multiple in some cases

...didn’t have to trim down to 1.280”...checked the brand new Starline cases which I used and they are already 1.280”

 

[WR Moore]

Sorry, but I have to disagree with this statement. Your statement does apply to 170 grain bullets, but this one runs in the 155 range, as described. I've loaded thousands of 158 grain bullets and crimped in the crimping groove. I used to mold that same bullet.

My reference was more to the technique rather than the specific case. There can be a number of reasons why one might apply the technique.

 

[alwslate]

On post #5 , he mentions 5.6 grs of titegroup or 5.7grs of Bullseye powder . I'm sure this is a typo and should read 4.6 and 4.7 . Regards, Paul

No typo. These loads are well below maximum charges for the
.357 Magnum ctg. You may be confusing cowboy action data
with .357 data. Some handloaders continue to confuse Hodgdon
data which is often just reprinted Speer swaged lead bullet data
with real Alliant and Hercules data. Look at the original data
developed by the powder company and you will see that all
loads for the .357 used the Federal 200 SRP with all powders.

 

[alwslate]

Per Alliant, do not use magnum primers with 2400.

This comes from Speer not Alliant or Lyman which is the best
source of data for cast bullets. Genuine Alliant data for the .357
used Federal small rifle primers with all powders. Lyman data
used CCI small pistol magnum primers with all powders.