Originally Posted by
Gm54-120
1) A 5/32 flash CHANNEL works fine in a variety of plugs even at higher pressure.
2) The anvils are not pushed back out of the cup so head space is fine.
3) Leak appears to be from between the anvil and cup which leads me to believe the cup is expanding just enough to allow some blowby.
4) I would like to see a Win209 primer shot from the same plug with the same load. The Win209 cup may be slightly larger OD and/or slightly tougher than the STS primer's cup.
If i can shoot loads all day that break 30Kpsi with a Win209 or Fed209A in a Savage plug and with my NULA using CCI 209s, i cant imagine its the ID of the flash channel and a sub 22kpsi load.
Scott, I think you have solved the problem... knowing Ron and his experience - I believe there is no way that he had a restricted 'flash channel' and the .032 'flash hole' is perfect. His powder load and bullet weight really should not have caused excessive blow back or pressure. I never voted in the poll but if your suggestion were added to the poll it would get my vote. Your explanation would also account for the metal discoloration under the rim of the battery cup.
I did not mic it - but I just dropped a STS primer in an Omega BP primer hole - it is quite loose... Remington's have a battery cup diameter of 0.240 while W209's are 0.242. Euro primers (Cheddite-Fiocchi-Rio's) run a little fatter at 0.243/0.244.
Nice job Sherlock!