I'm pretty new to reloading, and just shot my first 100 rounds of cast bullets in .45 ACP. The bullets are 230gr RN from Missouri Bullets - I've heard nothing but good from them so I don't doubt their quality. Accuracy was decent when I took the time to aim right, though I'm not a bullseye shooter by any means - might have been hitting a bit low. I was mainly shooting to check that the COL was good for reliable feeding, the crimp was right to prevent setback (one of the main complaints I've had with factory ammo was very noticeable setback after only one chambering) and that the Lee Factory Crimp die wasn't sizing the bullets down enough to prevent a good seal in the barrel. They fed 100%, went bang every time and the barrel cleaned up fine with no residual, so I think they sealed just fine, too.
However, before I cleaned the barrel I did see what looked like very small wisps of lead - maybe 1/4" long - inside the bore. This is my first time shooting cast bullets in a pistol, so I have no idea whether some lead shaving is normal as the bullet hits the rifling or what. None of the lead was stuck on to the barrel, a scrub with a rem oiled brush got it clean, but I thought I'd check to see if anything's amiss.
It did occur to me that I had perhaps not flared the case enough, and had gotten some shavings when seating the bullets without realizing. I loaded up another hundred with a touch more of a flare, will probably get a chance to try it this weekend.
Any advice and experience would be hot - as I say, everything shot fine so I'm not worried, just want to improve my reloading if it's necessary.