My last open build, which I received last year, took exactly 8 months. If you make changes deep into process it Will add substantial time to the original quoted time line.
I've never encountered that issue with seating my bullets and I've loaded 10ns of thousands of BB.. Granted I don't use dillion dies or Lee's for seating, I use redding dies for seating !
The Lee u die will typically created that coke bottle, as long as your rounds plunk into your barrel I wouldn't be concern. Hundo gauges have tighter toleracnes then most other gauges.
I use the Lee u die to load 40 Cal never had a feeding problem.
LMTDONW, from personal experience you can not go wrong with SVI and all that have received positive feedback, just stay away from the company that starts with the letter A and ends with an I..
Call them back and tell them it's broke, they will send you replacement parts. I've never had issue with them, always responsive and they sent out replacement parts, no questioned asked.