same gun/ different barrel chamber depths?

[Field]

1. Acquired 2nd XDm9. I now have 2 XDm9 pistols.

2. Acquired 1000 MG 124g JHPs

3. Was getting load set up, a load i had used before with XDm9(1) successfully.

mg jhp 124g

4.4g tg

1.135col

http://i587.photobucket.com/albums/ss316/fieldboy1111/016-1.jpg

4. Noticed that with this bullet/seat depth setup the loaded cartridge does not properly fit the chamber of XDm9(2) while IT DOES fit chamber of XDm9(1)

new barrel, XDm9(2)

http://i587.photobucket.com/albums/ss316/fieldboy1111/015-1.jpg

old barrel, XDm9(1)

http://i587.photobucket.com/albums/ss316/fieldboy1111/014-2.jpg

My dad suggested i take a loose necked case, seat the bullet very lightly, place cartridge in chamber of XDm9(2) and push case down until the caserim met the counterbore in the barrel.

Recommended seating depth for this bullet with the new barrel is more like 1.100 or less, which happens to be very close to what the loading manual lists.

???

Edited September 1, 2010 by Field

[CGT80]

1. Acquired 2nd XDm9. I now have 2 XDm9 pistols.

2. Acquired 1000 MG 124g JHPs

3. Was getting load set up, a load i had used before with XDm9(1) successfully.

mg jhp 124g

4.4g tg

1.135col

http://i587.photobucket.com/albums/ss316/fieldboy1111/016-1.jpg

4. Noticed that with this bullet/seat depth setup the loaded cartridge does not properly fit the chamber of XDm9(2) while IT DOES fit chamber of XDm9(1)

new barrel, XDm9(2)

http://i587.photobucket.com/albums/ss316/fieldboy1111/015-1.jpg

old barrel, XDm9(1)

http://i587.photobucket.com/albums/ss316/fieldboy1111/014-2.jpg

My dad suggested i take a loose necked case, seat the bullet very lightly, place cartridge in chamber of XDm9(2) and push case down until the caserim met the counterbore in the barrel.

Recommended seating depth for this bullet with the new barrel is more like 1.100 or less, which happens to be very close to what the loading manual lists.

???

I shoot an XD 40 cal with a barsto 9mm conversion barrel that is hand fit to my gun. I had the same problem with the same bullet as you. I had to seat to 1.070 to to not engage the rifling and the base of the bullet at that depth caused the case to bulge at the bottom of the bullet. I had my gunsmith taper the rifling a bit. Now I can load as long as I want. He also opened up the chamber with a 9mm reamer. The barsto barrel was way under the size of my dillon case gage. I didn't notice any loss of accuracy, but it runs very well now. I load a 124 MG JHP to 1.125" COAL over 4.2 gr. of win 231. I shoot steel competitions with this load and gun. I am using 40 cal magazines though, not 9mm.

My mom's xd 9mm doesn't seem to like MG 124 JHP bullets set to 1.125" though. I have not barrel checked the ammo yet.

You may want to contact Springfeild or just have a local smith ream the barrel for you. It only took my smith a few minutes to do mine. You may find a different brand bullet with a slightly different profile that will work better. I didn't want to do that since MG is priced nicely and available.