I sat down last night to resize some 270 Win brass and had some results that puzzle me. I measured the brass with Hornady's comparator using the C .375 bushing. It measured 2.045. I wanted to bump the shoulder back to 2.043 so I placed the die in the Forster Co-ax and screwed the die (full length bushing die) down till it touched the shellholder. I had previously lubed the case with a homebrew (90% isopropyl alcohol and 10% lanolin). Ran the case up into die (expander ball removed) and pulled it back down. Measured a cool 2.047...……
So I repeated this process with the remaining 49 cases. Exact same measurements before and after.
Why did that happen?
Luckily it was a 3 die set from Redding that included a shoulder bump die that I placed in the press and ran all of the brass down to 2.043
So I repeated this process with the remaining 49 cases. Exact same measurements before and after.
Why did that happen?
Luckily it was a 3 die set from Redding that included a shoulder bump die that I placed in the press and ran all of the brass down to 2.043