Hi everyone. I just got a case of .452 230gr RNL. I plan on shooting all of these through my XD45 using 4.5-5.0 of bullseye. My XD won't feed any SWC so I got the RN instead. Now the problem I'm having is that the RNL bullets have a little shoulder on them and that seems to be causing me a problem. They won't chamber correctly unless I crimp right on this shoulder. I can't beleive that this tiny little shoulder would cause this to happen but I can't think of anything else that could be the problem. There's no bulging and no overcrimping. They fit nicely into the barrel if I take the barrel out but yet they get caught up while feeding.
To crimp on the edge of the shoulder I have to make the oal 1.23 or so. Any longer and it won't chamber. Any shorter and it will be trying to crimp on the nose. FMJ rounds with an oal of 1.255 feed just fine...but they don't have that shoulder either. I have read a few manuals that list the min oal differently. For instance, my Lee manual lists 4.0 grains of bullseye as the min AND max load with a min oal of 1.19. Others I've read don't list a min oal, but they list the oal as just 1.26-7 depending on where I read it with a min charge of 4.0 and a max of 5.0. Oh...and I use a fairly light crimp.
Now what I'm wondering is if I crimp on the shoulder itself, will that raise pressures even more because of where the crimp is? I would think a bit of the brass would be in front of the shoulder and cause the pressure to increase a bit more. It seems I'm very limited to what I can use for an oal here. Should I change my charge any if I'm making the oal that short? Any other suggestions?
To crimp on the edge of the shoulder I have to make the oal 1.23 or so. Any longer and it won't chamber. Any shorter and it will be trying to crimp on the nose. FMJ rounds with an oal of 1.255 feed just fine...but they don't have that shoulder either. I have read a few manuals that list the min oal differently. For instance, my Lee manual lists 4.0 grains of bullseye as the min AND max load with a min oal of 1.19. Others I've read don't list a min oal, but they list the oal as just 1.26-7 depending on where I read it with a min charge of 4.0 and a max of 5.0. Oh...and I use a fairly light crimp.
Now what I'm wondering is if I crimp on the shoulder itself, will that raise pressures even more because of where the crimp is? I would think a bit of the brass would be in front of the shoulder and cause the pressure to increase a bit more. It seems I'm very limited to what I can use for an oal here. Should I change my charge any if I'm making the oal that short? Any other suggestions?