Hey Seimisane,
Hawk Bullets may have a heavier .40 cal bullet for you to try if those light weight 180g or 200 g bullets don't group well for you. Check this out.
http://www.hawkbullets.com/muzzlebullets.htm
Can you imagine a 235g 40 cal bullet. Many shooters will be drooling over these bullets matched up with MMP or Harvester sabots.
Also, I have been waiting for harvester to post info on their site re their new 40 cal bullet / sabots. Just read today that somebody called them and was told it would be a few more weeks yet.
James