I’ve handloaded for many years now and at one time I religiously checked bullet runout. For those that are unsure of what bullet runout is I’ll try to explain. One thing we as shooters should desire in a rifle is everything concentric. That is from the bolt face to the muzzle/crown we want everything on the same axis. A quality gunsmith can do this and I’m sure many manufacturers can as well. But the fly in the ointment happens at the handloading table. Hence, this is why I stopped checking bullet runout. No matter what I tried I could not keep the bullet concentric to the centerline of the case. It was always off by a few thousands and sometimes as high as four-thousands. So I stopped checking it, figuring it might show up as a flyer or maybe not at all.
Today, I loaded 50 .260 Rem using new Peterson Brass. I did the normal case prep; resizing, trimming, chamfering, etc. After I finished loading the 50 rounds I thought what the heck, let’s check runout. To my amazement, when I checked it, it was less than one thousandths of an inch for every round. I’m not saying I did anything special because I didn’t, I think it speaks to the quality of Peterson Brass. Now the next check will be at the range.
https://bulletin.accurateshooter.com/2019/02/bullet-concentricity-basics-what-you-need-to-know/
Today, I loaded 50 .260 Rem using new Peterson Brass. I did the normal case prep; resizing, trimming, chamfering, etc. After I finished loading the 50 rounds I thought what the heck, let’s check runout. To my amazement, when I checked it, it was less than one thousandths of an inch for every round. I’m not saying I did anything special because I didn’t, I think it speaks to the quality of Peterson Brass. Now the next check will be at the range.
https://bulletin.accurateshooter.com/2019/02/bullet-concentricity-basics-what-you-need-to-know/