CMV
Member
Loading some 9mm I noticed this today. Mixed HS brass, 115gr Hornady FMJ, 1.122 OAL. On some cases I see/feel the shape of the bullet base on one side of the brass only. Like when the bullet is seating it's going in on an angle & not being set straight?
Is it normal?
Is it something I should correct?
Is it something I need to worry about?
If it's something I can/should correct, how?
I'm thinking maybe I'm not opening up the case mouth enough with the expander die? If I measure before & after OD at the mouth I get .0055 difference so maybe only opening the mouth 5 & a half thou isn't enough to let the bullet get straight on its way in sometimes & it does this? All I can think of.
Anyway, these pics are of the same round. First one you can see the 'bulge' but it's hard to get a good representation in a photo. 2nd pic is same round rolled 180° & no visible bulge.
Is it normal?
Is it something I should correct?
Is it something I need to worry about?
If it's something I can/should correct, how?
I'm thinking maybe I'm not opening up the case mouth enough with the expander die? If I measure before & after OD at the mouth I get .0055 difference so maybe only opening the mouth 5 & a half thou isn't enough to let the bullet get straight on its way in sometimes & it does this? All I can think of.
Anyway, these pics are of the same round. First one you can see the 'bulge' but it's hard to get a good representation in a photo. 2nd pic is same round rolled 180° & no visible bulge.