.358 cast in 9mm?

[BigAlofPa.]

I have some .358 coated cast 124 grain i ordered for my 357. Im thinking about trying some in 9mm. Would the bigger diameter cause pressure issues? I will start at the starting data.

[Outpost75]

If they chamber and you can extract loaded rounds without de-bulleting, they will be OK.

[BigAlofPa.]

Awesome thanks. I'll load some dummy rounds and plunk test. Then chamber and check extraction. I have 2 9mm's that have tight chambers they will tell the tale.

[Conditor22]

or you can size them down to what you want

[jaysouth]

It all depends on how big your .358s are, and the size of your 9mms throat. Measure the bullets and slug your chamber/throat/bore.

[BigAlofPa.]

Ok they passed the plunk test and extraction test. They measure at .358. They are Bayou coated 124 grain rn. My 115 grain 9mm from them measure at .357. My 2 tight chambered guns are my PT92 and my Walther ppx. Those i could not run without using a lee FCD.

[pworley1]

358 lubed is what shoots best in my 9's.

[tazman]

Depending on the particular firearm(Beretta), I have used boolits as large as .360. Usually I run .357 but .358 should work fine.
As others have said, make up a few and check to see if they chamber.

[Tom W.]

My Ruger LC9S Pro likes the t/c 124 Lee cast and sized to.358,but my CZ 75 SP01 doesn't. .357 it likes. However, I bought a Lee 125 r/f .358 mold and the CZ likes them cast to .358, as does the Ruger.
The Glocks that I had would shoot anything......

[BigAlofPa.]

I'll load up 50 and run some through ea. Shoot off the bench and see how they group. Going to use Alliant sport pistol. I have 8 9's to test them in. Besides my little kel-tec pf 9. I should try some for my carbine to then later.

[tazman]

Sounds like a plan to me.
Also a good day at the range.

[GhostHawk]

I have 2 9mm's that prefer .359's, .357 and smaller keyhole and shotgun pattern.

.359's as cast worked. The rest of my 9mm's tend to get .358's. I've been lucky and have not yet aquired a tight one.

Fit is king.

[asmith80]

Let us know how the Sport Pistol works. I've heard good things about that powder and I'm almost out of Bullseye, so I'm on the lookout for another powder

[BigAlofPa.]

I been happy with it. I bought a pound to try it. Then another for some other calibers. Last trip to my LGS picked up an 8lb jug. Data is sparse on it. Alliant has some on there site. But it's only max loads. Speers newest book has some with starting -max loads. I noticed the data runs close to tite group. For loads that there is no data i been loading according to TG data. It's been working good. No over pressure loads. I still need to run some through the chrono then.

[JBinMN]

I been happy with it. I bought a pound to try it. Then another for some other calibers. Last trip to my LGS picked up an 8lb jug. Data is sparse on it. Alliant has some on there site. But it's only max loads. Speers newest book has some with starting -max loads. I noticed the data runs close to tite group. For loads that there is no data i been loading according to TG data. It's been working good. No over pressure loads. I still need to run some through the chrono then.

You could always call/contact Alliant & ask them what to use for Start loads.
https://www.alliantpowder.com/questions/default.aspx

Or,

To use the Max. loads to find Start loads, simply subtract 10% of the Max for the Start load, or if you are real cautious, 15% from the Max. list load & Start from there.

Example: Max. listed grains = 6.0 grains, then subtract 10% (.6 grains) or 15% (.9 grains) from the 6.0 grains, getting 10% Start load of 5.4 grains, or 15% Start load of 5.1 grains.

G'Luck!
:)

P.S. - I understand this is for mostly pistol 9mm, but it would be a good idea to use that chrony if you have one , as well as try shooting some one at a time ( particularly for the carbine 9mm) to make sure there are no squibs due to underpressure, but I doubt there will be at even 15% below Max.. That 10%-15% has been a recommendation for finding Start loads for many powders from the Max listing for a long time.

[BigAlofPa.]

Ok im back from my testing very happy. Decent groups for me shaking lol. Ran my 1911 9mm, Canik tp9sf , Tri-star C-100 and Ruger SR9. The SR 9 was way off to the left. I was like what?? Here the rear sight was was way left. Adjusted it had a few bullseyes. Yes next outing taking the chrono along. I did some plinking at cans last week with the Sport pistol last week in 45 acp 230 grain cast. Did real well. Loaded with 3.9 grains of SP. For the 124 grain .358 boolets.

[tazman]

Excellent.

[Rizzo]

Something to consider is that when you seat a .358" bullet in the 9 mm case, there is a possibility the the bullet will get "swaged" down to a lesser diameter.
If .358" is what is desired because your barrel slugging indicated that, then you could be having this problem.

Best way to tell is to pull a bullet after seating it and measure it with a micrometer (or caliper).
This is because the 9mm case is somewhat tapered.
One method that overcomes this "swaging" issue is to use a 38 S&W expander in your 9mm die.
A lot of casters use that method.

The 38 S&W expander will expand the case deeper than the 9 mm counter part.
You use the 38 S&W expander in your 9mm die.
The part can be ordered separate without having to buy a whole 38 S&W die.
It costs about $5.00 if I recall.

[Kenstone]

Ok they passed the plunk test and extraction test. They measure at .358. They are Bayou coated 124 grain rn. My 115 grain 9mm from them measure at .357. My 2 tight chambered guns are my PT92 and my Walther ppx. Those i could not run without using a lee FCD.

That's good news
But know that if you are not using a bigger expander, the case is probably re-sizing the bullet smaller than 0.358".
Pulling a bullet from the dummy rounds and measuring will confirm or not whether this is happening.
jmo,
:mrgreen:
Edit: sorry for the echo of Rizzo's post [smilie=b:

[BigAlofPa.]

Yeah i'll pull one from the dummy rounds then. I do use a powder through expanding die. I can always set it deeper too.

[Kenstone]

Yeah i'll pull one from the dummy rounds then. I do use a powder through expanding die. I can always set it deeper too.
Deeper will only flare the case more, not expand it any bigger

If it's a Lee expanding die, just buy this $3 bigger/longer expander for 38S&W, it's a direct swap:
https://leeprecision.com/pm-expan-plg-38-s-w.html
Lee has shipped them to me free (pd shipping)
Here too:
https://www.titanreloading.com/lee-se1699-pm-exp-plug-38-sw?search=SE1699
:mrgreen:

[BigAlofPa.]

Pulled some im good. The Hi-tek coating was even still in tact. Yeah on the 38 expander. I need to adjust mine. I had some slivers from when i loaded some 38spec and 357.

[mto7464]

I have been using sport pistol for about a month. Meters well. Shoots well, whats not to like. Charges run a little more then titegroup to get the same velocities without the heat of TG. Burns fairly clean too.

[BigAlofPa.]

Yes i like how it burns clean. Nice not having soot on the casings and gun.

[Jack Stanley]

Not a problem , I've loaded .359" for some pistols .

Jack