Comments on: Try Rotating Cases During Bullet Seating to Reduce Run-Out

By: James Fortune

James Fortune — Sat, 21 Jul 2018 12:31:38 +0000

I started the practice of rotating about 2 years ago. My technique is different however. I do 3 steps, split the seating and rotating into 1/3’s. It has reduced my TIR by over 50%.

I start with very straight case necks (less than 0.001″ TIR). Runout was running as high as 0.005″, now everything is basically less than 0.002″.

By: David Lawson

David Lawson — Sat, 07 Jan 2017 05:29:28 +0000

Fully seat the bullet. Then turn it 90 degrees and fully seat again.That will split any run-out by exactly half.
Turning 180 degrees will put the run-out to the other side, not split the difference

By: Walter

Walter — Wed, 10 Feb 2016 23:41:09 +0000

I’ve been rotating my ammo 180 for years but after I have allready seated the bullet on the first stroke. Does it matter that much to seat the bullet 1/2 way before you turn it 180?

By: DALE WALKER

DALE WALKER — Wed, 20 Jan 2016 01:16:23 +0000

Good info. Falls under nothing ventured-nothing gained. It works for me!

By: Tommie

Tommie — Wed, 13 Jan 2016 23:32:57 +0000

Simple, cheap (free!) and can make a measurable difference in run-out. Brilliant.