Steve,
I'm not disagreeing with you regarding the gist of your content, but I do want to straighten out the terminology and some of the finer points.
The "30 Caliber Rule" is the way it was previously...as Jon says, all shots get plugged with a 30 Caliber gauge. The rule change REMOVED the 30 Caliber Rule.
Historically, in the past pretty near all calibers in use were 30 cal. You'd get the odd 6mm and 7mm, but they were rare enough that it didn't make sense to get plugs of different calibers. Somewhere around 2000, a proposition to change the rule to "Plug with actual caliber" was floated with the NRA. Comments were invited and in speaking with the NRA Competitions Department after it was all decided, virtually none was offered (for or against). Sad, because when I posted a question regarding the change on the old Shooters.com board, it created the longest thread ever with passionate arguements both ways.
Lesson learned: When a proposal is floated by the NRA, make your feelings known in writing right to the Competitions Dept right away.
Steve, FYI, the 35 Cal limit applies to "Any-Rifle" but there doesn't appear to be any restrictions on "Match Rifles". Funny because I had a recollection that 8mm was the maximum caliber for Highpower (I couldn't find it in the 2003 Rules.
And...don't go getting uppity on the 30 Cal folks..."Oh well, doesn't matter that much to me, I beat'em anyway"...outstanding scores have been fired with the 308, and continue to be. Jim O'Connell won the Civilian SR title not long ago shooting one...and the only 500's ever fired by the SR's were fired with the 308 (or more properly with the 7.62 NATO, since one was using M118 and the other M852).