Ive had a batch of #3045 Interlocks in 165gn BTSP for a few months now and just got around to reloading them. First thing I noticed is that the ogive shape on my newer batch has changed from the last batch. The new batch measure approx. 0.600 - 0.604 (yes I measured them all ) from the base of the bullet to the ogive, but the one I kept for measuring distance to my lands on the old batch of bullets was 0.624! A 20thou difference.
Anyway, I loaded up a batch of 20 having come to terms that I would have to probably recheck the accuracy compared to my last batch of rounds, I set the first completed round to a Comparator OAL to 2.225" then cracked on and seated the other 19. Only to find when I looked at each finished round there was an obvious gap to the cannelure from the mouth of the case on some, whilst others were set deeper into the mouth.
After a bit of investigation, it turned out that the overly large lead tip on the bullet was in some cases getting caught by the bullet seater die pin (RCBS dies), and in other cases there wasn't a problem, so I was getting variations of up to 43thou on my finished rounds.
I must say I am pretty disappointed with the quality of this batch, anyone had similar problems with Hornady Rounds?.