View Full Version : Loading 380
I am Loading 380
I am using
700x 2.5 gr
Lee 102gr RNs mold
I am Sizing to .356 (2 manuals says .355 1 says .355-.3565)
I alox before sizing, then size, then alox again so Sizing is now .358
3 manuals says trim to .670 .675 and .677 all have max of .680
OAL was .970
Worked in LCP but not in Sig p238 (not even a primer strike)
OAL changed to .960 now P238 works.
ANY IDEAS OR DO YOU SEE ANY PROBLEMS ?
Thanks
Rockchucker
10-31-2009, 10:07 AM
I use that same mold too and seat my boolits to .980. They cycle nicely thru my Sig 232 with 3.0 of unique. I'm also sizing my boolits to.356 and using carnuba red for lube with zero leading. Very accurate little round.
paul edward
10-31-2009, 01:33 PM
Did you slug the bores?
Rockchucker
10-31-2009, 01:34 PM
Slugged at .355
No one loading for Sig p238 yet
Thanks
curator
11-01-2009, 10:27 AM
Slug your bore. Many .380ACPs have bore diameters of .358+. My Colt Mustang slugs .355 but shoots best with hard (water quenched wheel weight alloy) .358 slugs. For this pistol and my Browning 1922 (.357 bore) I head-space on the Lee 102 grain round nose boolit and don't worry about a bit of case length variance. 4 grains of Unique gives 1020 fps with good accuracy to 25 yards with this combination. Headspacing on the boolit has a very positive effect on accuracy with the .380ACP if your gun will allow it.
OAL max is .780
min is .740 for 380
At .770 I didnt even get a primer strike on the sig p238
That concerned me
At .760 I did.
I am still scratching my head on that.
Leftoverdj
11-01-2009, 09:07 PM
dcp. you can stop scratching. If OAL is too long for a given bullet, that bullet will stop against the rifling before the slide fully closes, The better pistols are designed so they cannot fire until the slide is fully closed. You pushed the bullet in enough so the slide could fully close and now your pistol will fire.
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