So quick story ive been reloading for a couple years now. So have a pretty good understanding of everything.
However I just recently rebarreled from 6xc back to 6.5cm on my rifle.
The barrel before the XC was also a 6.5cm. The 6.5’s have beem chambered by two different smiths. On this second barrel a fired case is 1.5315” with a hornady D400 head space comparator. The old barrel fired case was about 1.533” on the same tool.
With this barrel I started with factory berger 140 hybrids to try them and get the lapua. I had 200 pieces of lapua from the old barrel as well. After firing the new lapua/berger I measured the 1.5315” fired case. So when resizing them I set the shoulder back to 1.529”. I took the old 200 pieces and resized them again to the new shoulder bump. However when I loaded them (old brass but resized) at the range they were extremely hard to load. So I figured maybe I didn’t really set the shoulder back far enough on the old lapua. Got home remeasured and they were 1.529”. To I tried a few unloaded pieces in my rifle. Same thing still extremely hard to chamber and lock down bolt. When I ejected the case there is a wear ring at the the case head area. So I got my die out lubed it and resized it. Re chambered and still hard to close the bolt. So I’m guessing for some reason the old brass is not getting sized at the case base/head for some reason and its too wide causing it to be tight.
Has anyone seen this and have any suggestions. The new brass fired in this rifle has no issues after resizing.
However I just recently rebarreled from 6xc back to 6.5cm on my rifle.
The barrel before the XC was also a 6.5cm. The 6.5’s have beem chambered by two different smiths. On this second barrel a fired case is 1.5315” with a hornady D400 head space comparator. The old barrel fired case was about 1.533” on the same tool.
With this barrel I started with factory berger 140 hybrids to try them and get the lapua. I had 200 pieces of lapua from the old barrel as well. After firing the new lapua/berger I measured the 1.5315” fired case. So when resizing them I set the shoulder back to 1.529”. I took the old 200 pieces and resized them again to the new shoulder bump. However when I loaded them (old brass but resized) at the range they were extremely hard to load. So I figured maybe I didn’t really set the shoulder back far enough on the old lapua. Got home remeasured and they were 1.529”. To I tried a few unloaded pieces in my rifle. Same thing still extremely hard to chamber and lock down bolt. When I ejected the case there is a wear ring at the the case head area. So I got my die out lubed it and resized it. Re chambered and still hard to close the bolt. So I’m guessing for some reason the old brass is not getting sized at the case base/head for some reason and its too wide causing it to be tight.
Has anyone seen this and have any suggestions. The new brass fired in this rifle has no issues after resizing.
