I bought Hodgdon's H4831 [surplus] in paper bags for $1.00/lb when I first started reloading. The CIL primers, I have about 3000 of them left in standard LR and the Magnum version. Cleanest primer ever made....never clean primer pockets when you use them. To illustrate how well they still work, I have an accuracy load in one 270 that utilizes the CIL 8½ Standard primer. Still performs like it did 35 years ago. Leaving primed brass for a while. done that all my life, never a worry. Eagleye.
I still have some of the old surplus H4831 that we once group purchased, in a fifty pound keg.
I last tried the old powder on Aug. 20, 1991, in my favourite Sako 270.
60 grains, with a 130 grain Herters, flat base bullet.
Five shots averaged 3078, over the Oehler, with an extreme spread of 33.
I then loaded 60 grains of Hodgdon's newly manufactured powder, with the same bullets. Average was 2960, and es of 45.
I am going to redo the test, as soon as I get my chronograph.
And, Eagleye, did you ever use RWS primers? I thought they were really clean, as I never even started cleaning pockets while I was using RWS, or the old CIL that you mention.
In recent years I saw the results of a lab test on primers, and the standard RWS, I don't think they ever made a magnum, tested out to have more fire power than any other primer tested, including all the magnums!