Louthepou, I finally had a chance to get to the range in the last week. Couldn't keep this one on the paper ... I don't think it was me or the ammo, as I didn't have the same problem with the other two Enfields I shot that day. After taking a closer look at the barrel, I don't think it was ever re-crowned after being shortend. I'll take it to my local gunsmith in a week or so and get his opinion on it.
Thanks again for your help.
Jim