RE: 209 primers - too hot or not?
I could never understand why inlines need 209 primer ignition. Since the path for the flame is straight, it seems like a regular old percussion cap would be plenty. I've been thinking about switching to the brass 209 sized holders that use a small rifle/pistol primer.
But for an answer to the question, I've used regular 209 primes and the new milder (Winchester T-7 & Remington) primers & can't really see any difference in accuracy or cleaning.