I thought 69* were the small primers. I read that they also had a 57*, and seem to remember them....but I don't remember much about them.
Regarding the 97*, I've read are the same ballistically as the 209P and 209STS, except the 97* had an open flash-hole.
So this brings up another question. What was the primer used in Blue Peters Target Loads, i.e. the load the followed the Blue Magics and were advertised has having a "new hotter primer". That primer was called a 209something, but I can't remember what. Some claimed it was hotter simply because it was just a Federal 209 dressed like a Remington, and supplied to Remington by Federal.
Which brings up the 209T. Wasn't that the Federal primer for the Champion II hull?
Ok the Rem 57 was the old small primer then they had a 69 that was larger most was used in the 20 28 and 410 till about 12 years ago then they went to the 209 size . A 209 can be forced in a 69 pocket[not a good idea] there is NO way you will get a 209 in a 57 pocket. All the old rem/peters paper were 57 the first plactic Power Piston were also The 209 is .242 the 69 is about .219 the 57 around .210?