This may be a little dated for your post but I just got off the phone with Hodgdon and they have just completed testing for the IMR8208XBR in .243
Here's what they sent me:
55gr NOSBT 40.0-43.0
58gr VMax 39.0-42.3
60gr SEI HP 37.0-40.2
62gr BARVG 35.0-39.0
65gr VMax 37.0-41.0
70gr SPRHP 35.0-38.6
75gr HDYHP 34.5-37.8
80gr SEIBTSP 34.0-38.0
Hope that helps some. I have been looking for about a week and found no hard information.
gun)
