Greetings Str8sh2ter,
I have two rifles built on 50 caliber GRRW barrels. These barrels are accurate as any barrel ever built. One of these rifles was used in June, 2006 to take 3rd place in the X-Stiks agg at the TMLRA State Champions.
Although I prefer a .500 size ball for 50 caliber barrels, these two barrels have a definate preference for the .495 size ball.
Best regards and good shooting,
John L. Hinnant
If you are not an NRA or NMLRA Member, why not? I am carrying your load.