357 Sig case prep

StickShaker · Dec 23, 2016

If it chambers, fits in the magazine, and feeds I wouldn't worry about it. The 1.140 is listed for the 124 flat nose so the RN bullet may be seated close/exactly to the correct flat nose depth even though it's measuring 1.180. I don't see any reference to a 124 RN in the Hornady book but if you knew the length of the flat nose you could calculate it against the length of your RN.

BUFF7MM · Dec 23, 2016

StickShaker said:
If it chambers, fits in the magazine, and feeds I wouldn't worry about it. The 1.140 is listed for the 124 flat nose so the RN bullet may be seated close/exactly to the correct flat nose depth even though it's measuring 1.180.

That's kind of what I figured but I figure there are more seasoned reloaders than me here and like I said before the only dumb question is the one not asked.

thanks for the input. :thumbsup:

StickShaker · Dec 23, 2016

Buff7mm said:
That's kind of what I figured but I figure there are more seasoned reloaders than me here and like I said before the only dumb question is the one not asked. thanks for the input.

The RN is closer to the lands though but I don't know what effect that could have on the pressure. Touching I think yes, but .020? :shrug:

BUFF7MM · Dec 23, 2016

StickShaker said:
The RN is closer to the lands though but I don't know what effect that could have on the pressure. Touching yes, but .020?

I don't think it will but I definately don't want it into the lands, I'll pressure up with the crimp.

85MikeTPI · Dec 24, 2016

Anyone trying RN 357sig has never loaded 357sig before. I've said befor and I'll say again, FN or HP or deal with he pain

BUFF7MM · Dec 24, 2016

85MikeTPI said:
Anyone trying RN 357sig has never loaded 357sig before. I've said befor and I'll say again, FN or HP or deal with he pain

I've just this evening loaded some 124 RN's over some Universal, a few different loadings, seated them @ 1.185. They feed fine in my Glock 20 with the Lone Wolf barrel. Range report in a week or so.

atblis · Dec 24, 2016

85MikeTPI said:
Anyone trying RN 357sig has never loaded 357sig before. I've said befor and I'll say again, FN or HP or deal with he pain

115 FMJs work just fine.

Glock 20 with a conversion barrel.

Compared to 9x19

atblis · Dec 25, 2016

Buff7mm said:
Ok so my stuff arrived today and I've semi set up everything, but I need to ask the brain trust a question about COAL. I've got some FMJRN 124 grain basically 9mm bullets that I'd like to shoot in this also and from all I've been reading the max COAL should be 1.14, I seated one of these at that length and its teetering on the ogive for that bullet. I seated one at 1.18 and it passes the plunk test in the Lone Wolf barrel, I actually could get away with 1.20 but that's right against the lands. Question is does anybody think I'll have any trouble pressure or other wise loading these out to the 1.18 length? I've got flat points inbound for this so I'm just wanting to have something to blast until the others arrive.
Below is what I've got 1.14 and 1.18 respectively.

You can go much longer than that. In fact, I've loaded 115 FMJs to 1.28" OAL, and they feed out of the mags (Glock 20 with LW barrel) and pass the plunk test. This gives you more room for powder by the way. :party29:

I think 357 SIG loaded long is a better option than 9x25 Dillon and will do most of what it does with common brass and dies, and arguably a stronger case. Problem is now that there isn't real load data with measured pressures. At most you'll find "I did this and my gun didn't blow up".

Anyways, IMO the best part of a 10mm converted to 357 SIG is that you can load long and use regular old 9mm bullets. The 90 gr HP bullets are fun too.

StickShaker · Dec 26, 2016

Hey Buff, someone wants to trade a box of Sig for other ammo in the classifieds.

BUFF7MM · Dec 26, 2016

StickShaker said:
Hey Buff, someone wants to trade a box of Sig for other ammo in the classifieds.

Thanks, I'll PM them but I don't think I've got anything I could trade except the .22's, and I need to dig to see if I've got any mini mags.

BUFF7MM · Dec 28, 2016

Buff7mm said:
I've just this evening loaded some 124 RN's over some Universal, a few different loadings, seated them @ 1.185. They feed fine in my Glock 20 with the Lone Wolf barrel. Range report in a week or so.

85MikeTPI said:
Anyone trying RN 357sig has never loaded 357sig before. I've said befor and I'll say again, FN or HP or deal with he pain

Ran 50 of the 124's out of the G20 with the Lone Wolf conversion barrel today, I had a couple FTF's but I think that was from having a #20 aftermarket recoil spring in it. When I changed back to the factory #17'er I had no more FTF's. The switch was made around the 20 round mark.
Picture showing a 1.14 and a 1.185 seated 124, all I fired were seated to 1.185 over various charges of Universal 5.2-6.2 grain loads.

StickShaker · Dec 29, 2016

Buff7mm said:
Ran 50 of the 124's out of the G20 with the Lone Wolf conversion barrel today, I had a couple FTF's but I think that was from having a #20 aftermarket recoil spring in it. When I changed back to the factory #17'er I had no more FTF's. The switch was made around the 20 round mark.
Picture showing a 1.14 and a 1.185 seated 124, all I fired were seated to 1.185 over various mystery charges of Universal 5.2-6.2 grain loads.

Was that an accurate correction? :lol:

BUFF7MM · Dec 29, 2016

StickShaker said:
Was that an accurate correction?

Well let's just say I got to check for pressure with min/max loads, but that was about it. :lol2:

It was all in good fun, but damn cold. :thumbsup:

StickShaker · Dec 29, 2016

I can relate. I use empty factory ammo boxes and just mark the first case in the row with a sharpie. Haven't had a catastrophe yet but I'm always thinking about it. :ohnoes:

4570inMD · Dec 29, 2016

StickShaker said:
...Haven't had a catastrophe yet but I'm always thinking about it.

I can 'help'; you do not even have to ask -- just ask Buff or j8064. LOL

StickShaker · Dec 29, 2016

4570inMD said:
I can 'help'; you do not even have to ask -- just ask Buff or j8064. LOL

I think the fun you guys seem to have would be worth a catastrophe or two. :thumbsup:

BUFF7MM · Dec 29, 2016

StickShaker said:
I think the fun you guys seem to have would be worth a catastrophe or two.

I wish you could have seen the look on 4570's face, priceless to say the least.

StickShaker · Dec 29, 2016

Buff7mm said:
I wish you could have seen the look on 4570's face, priceless to say the least.

Sounds like a photographed reenactment is in order. And maybe a little neck wringing.

usa259 · Dec 29, 2016

Say, What is the concern with lubing the case?

Pinecone · Dec 30, 2016

usa259 said:
Say, What is the concern with lubing the case?

If you don't lube, you can stick a case in the die.

If you do lube, you have to remove the lube. I just tumble the loaded rounds in corn cob for about 15 - 20 minutes.

357 Sig case prep

The #1 community for Gun Owners of the Northeast

Member Benefits:

Active Member

☠Buff➐㎣☠

Active Member

☠Buff➐㎣☠

Ultimate Member

☠Buff➐㎣☠

Ultimate Member

Ultimate Member

Active Member

☠Buff➐㎣☠

☠Buff➐㎣☠

Attachments

Active Member

☠Buff➐㎣☠

Active Member

Western MD Hooligan #007

Active Member

☠Buff➐㎣☠

Active Member

Active Member

Ultimate Member

Users who are viewing this thread

Log in

Forum statistics