Loaded 9mm too long

[buenhec]

I accidentally loaded 500 rounds at 1.18 instead of 1.14. They still guage well and fit in the mags and chambers. Could I run into any pressure problems or should I just use them up.

I used 4.1 of VV N320 with 124g berrys.

Thanks

 

[GotCoffee]

Why take the chance. Its not hard or too time consuming to set them at the right depth. Just seat them where they are supposed to be. Dont take any chances or short cuts. This is an EASY FIX.

 

[1SOW]

If that's for your Shadow, you may be close to max COL.

How much seat does that leave?

Should shoot ok, but I too think why have 500 rds that you aren't happy with.

What speed were you getting from the 1.14? I'm trying to work up a load with 124gr Precision Delta fmjs.

 

[jmorris]

At 1.18” the ammo won’t fit in some magazines. Glocks for instance won’t run much over 1.16”. Some 9mm magazines were originally designed for 38 super, so you could be OK. If you do find that you have magazine clearance issues I would just set your bullet seating die to the proper depth and run them through again.

 

[jmorris]

Also, at 4.1 of 320 your close to (or in some cases over) max so I would leave them as long as I could. If this is your first batch (assuming it could be because of the seating issue) I would load some lighter loads first as a trial before messing with what you already have, just to be safe.

Official
http://www.vihtavuori-lapua.com/pdfs...-Data-2006.pdf

N320
124 FMJ/FP Hornady min 3.9gr 1017fps / max 4.3gr 1096fps
124 RN Rainier min 3.8gr 1000fps / max 4.1gr 1069fps
124 FMJ-RN Lapua min 3.4gr 951fps / 4.0gr 1070fps

 

[Zak Smith]

The load should be fine at 1.14". 4.1gr isn't close to max.

ETA: just saw jmorris' post. When I shot this load, it was not close to max in my guns.

 

[Silverado6x6]

I had the same problem with some .45acp JHP that I loaded up years ago for a Glock, I tried to load up a mag for a Sig P220 and found that they were about .040 too long, so I just sent them all through the seater again, unless you have crimped a cannulure its not such a big deal, I could though say it may be for the wee caliber like the .380.

 

[Walkalong]

I agree with Zak. If they will load in the mag and chamber, shoot them. It should be a pleasent load.

 

[NCsmitty]

If the bullets are not being jammed into the rifling, and fits the pistol, shoot away.

NCsmitty

 

[Mal H]

No one has asked this yet, so I will:

How in the world did you get to a 500 count without knowing something was wrong?

It's a good practice to check OAL at intervals while loading large batches. I like to give every 50th one a quick mic looksee to be sure the seater hasn't moved, or there isn't any gunk building up in the seater cavity. It does happen.

But if even the first one is 1.18" instead of the 1.14" you wanted - well, something has to be changed in your routine.

Since you said, "They still guage well and fit in the mags and chambers.", I wouldn't bother seating them deeper since I assume they are already taper crimped since you'll end up with a small ring of lead to be removed. Just shoot one or two to see how they are, and then shoot the remainder if all is well.