9mm and 158 gr. cast

[Hondo 60]

I wonder why Lyman dropped that bullet in their 49th edition?

Was there something unsafe about that?

 

[floydster]

Measureing the Lyman bullet 358311, it is .0754 long.
The Lee TL-358-158-SWC is .0665 long.
From the base of both bullets to the front driving band is .0427, -+ .02,
the difference in lenght is .089, the Lyman being longer.

So both bullets would have to be set back in the case the same?
I set the Lee bullet just back far enough in the case to clear the rifling in the 75 CZ, this is were I got the OAL.
I will not shoot these rounds, however I wonder how many guys in the early years ( before Lyman dropped the load data for this bullet) had problems, this is very interesting indeed!!

Thoughts?
Thanks, Floyd

 

[918v]

So both bullets would have to be set back in the case the same?

Yes, the base of either bullet would be seated to the same depth inside the case, but the Lyman would be at a longer OAL.

If you want to shoot heavies in the 9mm, get something you can load closer to the max OAL to get the most case volume you can. Or ream your chamber throat to allow you to seat this bullet further out.

 

[floydster]

918v,
Thanks for your input, but I don't think I'm going to pursue this load any farther.
Your help is much appreciated
Floydster

 

[rcmodel]

I wonder how many guys in the early years, before Lyman dropped the load data for this bullet) had problems?

Probably nobody had problems.

Because my early Lyman manuals do not list a 158 SWC 9mm load.

They were using mold number #358311, which is a 158 RN.
Which could be seated further out without hitting the rifling.

rc

 

[floydster]

rc,
Altho the bullet profiles are different, the distance from the rear of the bullets and the front driving bands are the same, hench the 358311 Lyman bullet would still be a problem in the short leade CZ.
Thanks, Floyd

 

[1SOW]

I shoot a 75B with the tight chamber, and that bullet is pushing the envelope.

A very light load (almost squib level) with a SLOWER powder with only 'ONE' bullet in the mag would make for an interesting test shot.

Does it clear your slide stop when feeding?

Sure would be interesting to see chrono data on your load.

Keep us posted

 

[fecmech]

the 358311 Lyman bullet would still be a problem in the short leade CZ.

That is probably why I had no problems with my H&G 158 RN in the 9 MM. Bullet OAL is .700 and base to the front drive band is .374. At the time I worked up my load I had some RCBS 147's and I had no more bullet in the case with my 158 then the rcbs had with 147. I never showed any pressure signs but the load was not outstanding in any way so I abandoned it. The truncated cone designs of 120-125 grs by Lee,RCBS and Lyman are the accuracy champs in the 9MM. They can be successfully run at 1200 fps+ safely and with excellent accuracy. I have a K-38 revolver that shoots 158's@900 fps with precision, so that's what I use them in.

 

[Clark]

918v
Member

__________________
WANTED:

I'm wanted. $200 reward. Call your nearest police station and report me.

$200?
What?
That's a stray cat reward!
Your posts are smarter than Detective Brenda Westcott when the Shizz was gunned down.