[isuace]

I didn't want to thread jack the other thread that is going on about failure to fires but I had a very similar experience today.
I was shooting 9mm reloads from my Sig P6. I had several (~10-12 out of 150 or so) that failed to fire, and when I dropped the mag and tried to eject the round the gun was so bound up I had a heck of a time getting them out. When they finally did come out I saw that the primer was dimpled.
I put some of these back in to try again and roughly 50% fired, the rest did not.
On some of these it does not look like the primer is flush, on others it is.
I am using Missouri Bullet 125gn 9mm bullets. Overall length on most is just over the OAL listed in Hodgdons at 1.125"...most of mine are right around 1.130".
When I got home I started experimenting and I pulled the barrel out of my P6. Winchester white box ammo drops right into the chamber so that the end of the case is flush with the end of the chamber. My reloads do not drop right in, in fact they stick out a mm or two. I was able to get them to drop in flush with little force if I cranked the OAL down to less than 1.10".

Where should I go from here? It seems that the bullet shape is what is causing me headaches with these bullets, they are a "fuller" cone shape than the WWB ammo. I am currently using the starting load of 3.6gm of Titegroup. Will I be ok pressure wise if I seat the bullets lower, or will I need to decrease my powder charge?

Thanks for any advice.

[Galil5.56]

Looking at the bullet you mentioned, it's very long full diameter shank and short ogive would lead me to say go deeper. Many times you will have to let the bullets shape and diameter dictate seating depth. For instance, because of how a Lee TL 124 TC bullet is designed, I have to seat it at around 1.070" so that it fits the chambers well in my pistols. If you work up carefully, and go with the longest OAL that allows good functioning, I think you will be fine. FWIW, I do not use propellants as fast as you are using, and find Unique and WW231 about ideal for 124/125 grain cast bullets in 9mm.

[evan price]

I would recommend 4.0 of titegroup personally.

Seat them down so that the edge of the driving band is just above the case mouth.

I had a similar problem with some oddball 9mm 125gr in my P6, however at 1.100 they fit fine.

[robctwo]

I ran 100 rounds of Missouri 125 gr RN 9mm through my Baer today. OAL 1.1, 4.1 Universal. Very nice loads, not quite as accurate as the Precision 125 gr TC, but a lot cheaper.I've had to load a lot of stuff shorter before I got my BarSto barrel on my BHP reamed out. It was short and tight. Start at bottom end of the load data and work up if you need to be shorter than the listed OAL.

[rbernie]

Missouri bullets have no step-down from the driving band to the start of the ogive. They work best seated a bit short, in my experience.

I load 'em to 1.1" and that works well for me with 4gr of Unique.

[isuace]

Thanks guys! I was a bit worried about what I was going to do, but I'm feeling alot better about it all now. Ill just seat them at 1.1" with 3.6gr to start, and work my loads up.
I appreciate everyones' replies.