The_Shadow,
Thank you for the good info.. I've been shooting and reloading the 9X25 for almost two years however I have mainly used XTP bullets.
it was yesterday that I experienced my first bullet setback and a few ftf's due to headspacing.  The setbacks occurred with Zero 115gr fmjs.

Looks like the ogive extends a bit farther than most which is killing my neck tension.

Unfortunately I have several hundred of these loaded up so I hate to pull them.  They are currently seated to 1.259 and I'm going to use my kinetic puller to get them out to 1.262 then try a bit more taper crimp.. I'll do this on a few then shoot them. If setback occurs again I'm pulling the entire lot.

I'm waiting on a knurling tool to arrive and may try that if load these bullets again or just stick with XTP's.

What bullet(s) do you have the best luck with in your Dillon? 

I was too and finally found one post last night where I guy said shoulder.

thanks for the reply.

I think it makes a great feral hog cartridge.. it's what I do with mine:
http://75.143.104.64/pigs/firepig.png

Shot my 40 super today along with a 9X25 Dillon and 460 Rowland.. Love them all..
Let a couple buddies shoot them for their first time. One voted for the 40 Super, the other 460 Rowland but my fav is the 9X25..

Guys,
First post so go easy..

I am tired of searching and going to make an assumption the Dillon headspaces off the shoulder and not the case mouth?

Someone set me straight.

thanks

pop a cap