thanks for the info. i'll slug the bore and check it out.. the TC 223 is a 14 inch .pistol grip was looking for a 3030 or 35 rem barrel that would fit it... back then also.. but that's on the back burner now. I'll try IMR 3031 since i have some allready. in the 47th Lyman book it shows Unique ( i have) 6 to 8 gr.for 14 inch. and may add a little babbit (tin, lead and animony ) or WW after i've put the lyno through it's trial runs...
Many thanks and keep in touch "THE CAT"
Time for din din Morris