I got a chance to fire some recent ammunition purchases over the Chrony, so here's the results.  All data was for 10 shots, temperature about 85 to 90 degrees.

20 inch 1/7 Colt:

55 fmj Rem UMC(L223R3)  3047 fps/ ES 282
55 fmj IMI (lot 00264/D)    3048 fps/ ES 62
Q3131A(lot VE21)               3218 fps/ ES 52

IMI M855(lot 00207/D)       3085 fps/ ES 50

WWB 45 jhp                            3379 fps/ ES 94


16 inch 1/10 Ruger:

55 Rem                                   2920 fps/ ES 150
IMI 223(lot 00264/D)          2925 fps/ ES 114
Q3131A(lot VE21)                3059 fps/ ES 91

IMI M855(lot 00207/D)        2979 fps/ ES 53

WWB 45 jhp                              3220 fps/ ES 59

The IMI from Wideners(lot 00264/D) shoots much more uniformly than Rem UMC!  Both are light loads.

The ones in BOLD shoot very uniformly as far as velocity is considered.  I reject reloads that give high Extreme Spreads(ES) as they cause excessive vertical stringing at 200 yards and beyond.  HTH.

Paladin

Thanks for the effort.