The 1903 need/must/should have the bores slugged,but I've had three and all shot very well the 160gr Hornady bullet at 2300fps.

I started at UNCC in 1975.I'll be in the Charlotte area by the end of the week.I noticed you also attended the Vintage Cup,I went to the first 4 in NY. I will be rejoining the Carolina's Chapter this week....Small world!