Lee 356-125-2r

[Ed_Shot]

Just got a new 356-125-2R mold for for use in my CZ 75B. I use data from the Lyman 4th Ed. CB Handbook.

Can someone who uses RCBS 9mm-124-CN tell me the as-cast weight of the boolit and the length of the boolit. Thanks.

[sig2009]

I can only tell you the Lee 356-120gn tc. Length is .555 and they drop at 125-126 gns. I have never had a mold that casts the exact weight as stated.

[Ed_Shot]

Thanks. My 356-120-TC's drop at 122 gr and are .560 long.

[sig2009]

Thanks. My 356-120-TC's drop at 122 gr and are .560 long.

Then why did you ask?

[Ed_Shot]

I'm asking for information on RCBS 9mm-124-CN.

[sig2009]

I'm asking for information on RCBS 9mm-124-CN.

Oh. Sorry about that I didn't see the RCBS reference.

[Cherokee]

Uhhh, the 356402 is a Lyman mould. From 3/3/94 alloy, mine weigh 124 gr and are .631" long

[Ed_Shot]

Again, thanks, my 356402's drop at 122.5 gr and are .625 long. My 358242's drop at 122 gr. and are .580 long. That covers all my nominal 120 gr. slugs.

My new 356-125-2R is 126.5 gr as cast and is .565 long.

I'm trying to get some comparitive data on a same weight slug to determine OAL and load data.
The MAX COAL fir the 125-2R in my CZ 75B is 1.066. Lyman data for the RCBS 9mm-124-CN gives an OAL of 1.050. Therefore I'm trying to find the as-cast weight and length of 124-CN from a current user.

[Cherokee]

For the 356-125 2R, my weights run 126-128 gr from about 3/3/94 alloy and are .575" long. I started out using 1.063" OAL for my Briley match barrel in my 1911 but after smoothing out the chamber/rifling lead, I now use 1.08" which feeds better in my gun. Hope that helps.

[Ed_Shot]

Great, that's what I needed.

Given the following comparison should I be able to safely use the Lyman data for RCBS-124-CN to load 356-125-2R:

RCBS 9mm-124-CN
As-cast weight 126 - 128
As-cast length .575
OAL 1.050 per Lyman CB Handbook
Bullet depth inside case .275 given case length .750

Lee 356-125-2R
As-cast weight 126.5 (3/2/95 alloy)
As-cast length .565
OAL 1.055 given MAX OAL of 1.066
Bullet depth in case .260 given case length of .750

[Cherokee]

As always, start at the start level per the manual and work up in your gun. Have fun....