As has been pointed out by many, CIL Dominion brand ammunition was top of the line. Their 'Copper point expanding,' center fire bullet was great. On moose size animals I think it was superior to Nosler (after they were invented.) It seemed to maintain more of its original weight and it opened up beautifully. A man I know who once shot a lot of grizzly bears used Dominion ammo in 30-06 with the Copper Point expanding and swore by them.
I have also had some experience with the Dominion rim fire, as all the decorations below are all mine. However, it may take someone as old as "Bearhunter" says he is to know about the old Dominion Marksman program.
The three Winchester patches in the upper right were a celebration of Winchester in 1967, their 100th anniversary.
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I think IVI made some agreement to use the CIL term, Imperial, when they took over, but that was as far as the comparison goes. I had a box of 'Imerial IVI,' for 243 that claimed on the box the velocity was 3200 FPS with the 100 grain bullet. I fired 5 through a Oehler 33, with my Ruger 77. The high was 2602, with a low of 2473, for 2540 average with a 125 spread.
Five minutes later, without moving the rifle from the bench, I shot 5 of my handloads, 100 grain Siera and XX grains of Norma 205. The high was 3112, the low 3069, for a 3094 average with a spread of 43 FPS. Need more be said!