Reloading problems with 40 S&W

[Lipe1970]

.376 on the 9mm and none on the .223, got it.

 

[LiveLife]

I use .375" taper crimp for .355" sized jacketed/plated bullets.

 

[Lipe1970]

Using Berry's 115g round nose on the 9mm and hornady 55grain on the .223.

 

[918v]

One thing you also may wanna try in your load development is to vary the OAL in addition to to the powder charge. I have found that OAL affects accuracy in these low capacity high pressure cases. I think the best approach is to start with the minimum powder charge/maximum OAL, then shorten the OAL in .010" increments. If that does not produce the best accuracy, restore the OAL to maximum again, and up the powder charge and do over. Many of these bullets give you alot of flexibility in terms of OAL and most new pistols will feed reloably no matter what OAL you use, even as short as empty cases. While the 40 gives you prolly only .030" to play with, it is worthwhile to try.

 

[Bovice]

For .40, I like them loaded near or at maximum OAL (1.135) with a medium-high powder charge. For 9mm, the same is not true. I keep them at 1.125. The maximum OAL for a 9mm is 1.169". I've never seen a 9mm loaded that long.

Obviously there are a lot more variables at play than OAL and you will have to factor in bullet weight and profile, but that's just my experience with that one parameter.

 

[GLOOB]

With Berry's 155gr FP in 40SW, I shoot for an average of 1.125". That works in all my pistols.

 

[popper]

Perfect your loading technique for the .40 first. Move to the .223 and then the 9mm. Learn all you can from one before moving to the next.

 

[P-32]

Are you going to load the 223 for a AR?

 

[1SOW]

For 9mm: If you use plated bullets, I recommend a taper crimp (within 1/16" of the case mouth) to .375-.378". This will feed and prevent possible damage to the plating.

One test you can do if interested. Seat and taper crimp a plated bullet in an empty case to .365, another at .370, and a last one at .375.
Pull the the three bullets and carefully check the plating for indentations or damage of any kind. Doing two of each might give more reliable results.

 

[Lipe1970]

Yes, i am reloading for an ar. 40 has went well, produced about 50 and produced about 50 9mm, now need to try them out