Thread: 6x45 Rem barrel

Finally fitted up the last 6mm barrel on the Sako Vixon this afternoon. I had pre machined and chambered the barrel to streamline the process but murphy thew a few curveballs as usual.





After removing the old .223 barrel and fitting the 23" blued chromolly barrel the Stug stock barrel channel needed a little more inletting to clear the slightly heavier barrel.

Then it was off to the chrono with a few test loads.
Unfortunately there was an issue with a week firing pin spring that needed sorting before we could proceed.
After a bit of fluffing around I made up a temporary spring spacer to preload the firing pin a bit more as a temporary measure until the spring is replaced.
My load for my CZ 527 of 26.5gr of H4895 and a 75gr Sierra HP shot 3020fps in it and showed a little pressure, probably due to the faster 1-10" twist so I backed it off to 3000fps with 26gr of H4895 which looked pretty good.
Loaded up 6 rounds in newly formed PMC brass with a BR-4 primer and took it to the range.
I was handicapped by a 7 power loopy and didnt have any 30mm Sako rings on hand to swap it out with something bigger so just made do. There was a light wind but not enough to use and an excuse.
1 shot to sight it with a quick adjustment followed by 5 more gave an acceptable half MOA group.
With some larger optics and a bit of time spent in brass prep and loading this one will be a tack driver.