Made it home from Kennewick and wanted to check out the new XPB bullets in my rifle bores.
A little bit of review, I have been working on finding a 50 cal. bullet that I could load and shoot from my 50 cal. Knights. I first picked up some Barnes 50x275 gr. XPB bullets. I was lucky because these bullets right out of the package worked very well in my tighter Wiseman Project Rifle, but they were to loose for the rest of my Knights, they would drop right to the bottom of the bore. But, with knurling the bullet appears to fit and work well in the other Knight bores.
Saturday I was able to locate a few boxes of Barnes 50x325 grain bullets and to my surprise they are shaped like an 'X' bullet instead of the Expander as the 275 is.
Today when I got home I really wanted to try these new bullets in the Knights. The first rifle I tried was the project rifle because it was out... -
well surprise! The bullet dropped right to the bottom of the Wiseman Barrel :twisted: Oddly enough! the 325 is smaller in diameter than the 275's. I grabbed my digital mic and decided to measure them, but remember I am not the best at working a mic. The .500x275 XPB's measured .5005 and remember they are tight in the Wiseman. The .500x325 XPB - measure .4995 enough of a difference to give me a head ache! Because the 325's drop to the bottom of the bore.

Solution....knurling! - dug out my to files and ran 5 of the bullets through the files to knurl them. With the knurling they now seem to be just right.

It really does not seem much of an impression on the copper bullet but it is enough...

Hope to get out in the next few days to shoot my newly knurled bullets