357mag OAL with semi wadcutters

[MEHavey]

okay, you have a geometry problem w/ the SWC ledge and no OAL refinements will fix it.
The `92-type actions (if that's what you're dealing with) are very unforgiving w/ SWC's much over 38Special length.
again see: https://thefiringline.com/forums/showpost.php?p=5089628&postcount=10


... and the `73s don't like ANYthing 1.6"-ish & beyond. (never clear the magazine tube)


.

 

[OlympicViking]

I seat my ACME 158 gr SWCs to the crimp groove, and the COAL comes out to 1.610". They chamber just fine in my 686, so I've never cared. As others have echoed, it sounds like a different bullet profile would help.

 

[Jim Watson]

There is no shortage of RNFP - Round Nose Flat Point - cast bullets meant for use in tube magazines. Shoot the SWCs in a revolver.

 

[Jesse Heywood]

Case got stuck going from the tubular magazine to the chamber with lever fully open. When you mention "chambering an empty, sized case" you mean brass and bullet seated with no powder and primer correct? I see no bulges and the case slid into a Lyman ammo checker easily. Will check diameters of case tomorrow though.

An empty case is the just the brass. However, you have just defined the problem as being in the cartridge handling before the round is chambered. The SWC will not work in your gun. You need a different bullet. For that I recommend following the advice of those who know more about lever action guns.

 

[RecoilRob]

If your 92 will feed 38 SWC's....there's nothing to prevent you from trimming down the 357 cases until they'll feed. Only problem then is you have odd-ball brass and published data will be assuming full capacity cases so you'll need to reduce the charge weights a bit.

This is one of the neat aspects of 'rolling your own'....never say never and if you really want to use that bullet...you likely can.

 

[Cannibul]

There's one Lyman SWC that was designed to crimp in the crimp grove in .38 SPL brass for use in .357 cylinders. If you crimp in the groove with .357 brass it will be too long.

 

[larry7293]

There's one Lyman SWC that was designed to crimp in the crimp grove in .38 SPL brass for use in .357 cylinders. If you crimp in the groove with .357 brass it will be too long.

thanks
Waiting to hear back from seller. No explanation yet.

 

[Jim Watson]

Yes, Lyman-Thompson 358156, Skeeter Skelton's favorite. That would give some OAL control but he would still be stuck with the SWC shoulder which lever actions do not do well with.

 

[Sunray]

SAAMI max OAL for .357 is 1.590". That 7 thou matters. The bullet would stick out of a revolver cylinder too.

 

[Cannibul]

Yes, Lyman-Thompson 358156, Skeeter Skelton's favorite. That would give some OAL control but he would still be stuck with the SWC shoulder which lever actions do not do well with.

Thanks Jim, I thought that was the one but wasn't sure enough to post it. I have that mold too.

 

[larry7293]

There's one Lyman SWC that was designed to crimp in the crimp grove in .38 SPL brass for use in .357 cylinders. If you crimp in the groove with .357 brass it will be too long.

Maybe my problem. I left messages with seller about this, but they have not responded

 

[MEHavey]

whose bullet is this (website/url?),
and what/model rifle is being used?

 

[larry7293]

whose bullet is this (website/url?),
and what/model rifle is being used?

Henry big boy. RMR

 

[Shaq]

The manual for my Marlin 357 says max length is 1.590". And lever rifles work better with RNFP (Round Nose Flat Point) bullets.

 

[MEHavey]

I'll be honest... you're just not going to get a 357mag-length semi-wadcutter to function in that kind of action--regardless of OAL refinements.
It's the nature of all those tilt-feed cartridge lifter designs. (straight lift elevators on the '73s are another story altogether)

I strongly suggest you get RMR's truncated cone and call it a day.
https://rmrbullets.com/shop/bullets...cky-mountain-thundercast-tcfn/?v=7516fd43adaa

 

[Walkalong]

SAAMI max OAL for .357 is 1.590". That 7 thou matters. The bullet would stick out of a revolver cylinder too.

Some maybe, but none of mine. I shoot a similar coated 158 Gr SWC where the OAL when properly crimped is 1.600 to 1.605. It doesn't stick out of the cylinder on multiple .357 revolvers.

 

[larry7293]

There's one Lyman SWC that was designed to crimp in the crimp grove in .38 SPL brass for use in .357 cylinders. If you crimp in the groove with .357 brass it will be too long.

Elmer Keith style bullet!!!