neck tension

UPDATE 2-5-22: Thank you everyone. Truly excellent professional responses and I very much appreciate everyone’s efforts. Here’s the resolution. I purchased Sierra 77 Matchking‘s, a redding small base sizing die with .243 and .244 bushings (and some Varget powder that was in stock which made me...

So I bought some new brass online and got it all primed up and ready to load and the first bullet I went to seat got cut up pretty good. Upon further inspection, the case mouth I.D. was reading 0.220 or 0.221. I ran one of my once fired cases through my full length sizing die and took a...

I’m trying to determine best neck tension to minimize the bullet jumping out more (or too much more). In my SCAR 17, the rounds as loaded measure .3375. So I round up to .338 which the LGS reloading expert recommended. I have a .335 bushing. In test rounds I chambered with this .003” neck...

So I know "neck tension" can be a hot debate, but I was wondering if anyone could shed some light on using a bushing vs. an expander mandrel for obtaining a desired amount of neck tension. Right now I run all of my new brass threw a 0.263" expander mandrel (shooting 6.5 creedmoor) to obtain...

I was using a Forster FL resizing die for my non-neck turned Winchester 7mm WSM brass but then decided to try neck turning just to even out the necks to get more consistency. Before the first firing after neck turning, my Forster FL resizing die gave just enough tension to hold the bullet, but...