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Vandikar1
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Posted: April 04 2017 at 8:30pm | IP Logged Quote Vandikar1

I've done a ton of 380 auto and my load seems to have a problem in my friends .380 Beretta. It tends to fail to cycle and load the next round from time to time. It works in his wife's 380, and both of mine. So I suspect the gun is the problem not the bullet.

None the less he's asked me to make a "beefier" 380 load. Please no comments on that one.

So I pulled out an old load guide and found a .380 load using 2.7 grains of Tightgroup in an FMJ. Seems a little high, but not unreasonable but here's where it gets funny. It says to take the OAL to .900 inch. that is really really short compared to any 380 ive either ever made or even bought.

Has anyone ever had a .380 that short?   Any chance there is a (*gulp) error in the lyman guide? or is .9 reasonable. It seems to cycle into my .380 fine. Not sure I want to fire the thing before I here comments.

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STCM(SW)
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Posted: April 04 2017 at 10:16pm | IP Logged Quote STCM(SW)

All the 380 acp I loaded are .980 and feed ok in my FEG61 PPK clone using 3.2 gr of WW231 and a 95 gr fmj.
Don't know what to tell you.
Maybe the pistol has a like for different rounds.

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The_Shadow
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Posted: April 05 2017 at 6:10am | IP Logged Quote The_Shadow

With the Hollow Points from my Ruger LCP, I load them to
0.9480"
They don't have the tip like an FMJ

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joed
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Posted: April 05 2017 at 3:47pm | IP Logged Quote joed

Part of the reason I don't like loading autos.   What works in my gun
may not work for someone else.   

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RT58
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Posted: April 05 2017 at 4:12pm | IP Logged Quote RT58

"Any chance there is a (*gulp) error in the lyman guide?"
No error, I checked several Lyman manuals and they all give the same .900" OAL.

"It says to take the OAL to .900 inch."
It says they took theirs to .900", not that you are supposed to. The bullet they are using is from Sierra and has a short conical point with a meplat. If your bullet is a long round nose and you seat it to that depth, you may be in for a surprise. If you're using that Sierra bullet you should be good to go. Sierra seats it to .960" and their data is based on that depth, but they don't list any loads using Tightgroup.

The fact that your friends .380 won't cycle your load doesn't necessarily mean it needs beefed up, it may just need the OAL tweaked.
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Vandikar1
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Posted: April 05 2017 at 6:50pm | IP Logged Quote Vandikar1

I'm building up a load around a .380 auto 95 grain FMJ out of Montana Bullet.

Not trusting the .9" I already knew i wasnt going to start there.

My intention is to take it start 2.7gr of Tightgroup at an OAL of .96 and slowly ramp up to 3.1gr chronoing the loads till I can come in at around 1000 fps.

Question: What is a meplat? Is that shorthand for metal plate ie Jacketed? Or something else?

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dahlin
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Posted: April 06 2017 at 5:05am | IP Logged Quote dahlin

You need to take a look in the back of your reloading manual there is a section called Glossary they give a very good description. If you don't have at least one manual you should get one.
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RT58
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Posted: April 06 2017 at 6:59am | IP Logged Quote RT58

"Meplat" is French and means "flat". It is used to describe a flat area on the nose of a bullet. I guess the English language doesn't have enough room for it's own word, so we borrowed one and embellished it a little.
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