QUOTE//In blackpowder cartridge, there was a strong trend to magnum primers for a while, then the reverse happened. Lots of folks felt like they were getting better accuracy with pistol primers. That's what I ended up doing and swaged the primer pockets of my cases to have pistol primers bottom out in them. Quite a bit of work, but you know anythings better than practicing...
Seems like it would be troublesome getting pistol or rifle or shotgun primers out of the nipples if they were held in firmly enough to secure them during the firing cycle.//QUOTE/
1858 REM. ARMY .44 CAL. PEITA
Ok, I was thinking theres a capper-remover thats like a C on removal side, its metal spingsteel, if the round sides of top of manuf. nipple was flattened like dremel or grinder to right with, then it would do same as in bp rifle and remove the 209 by grabbing both sides. as far as the overfire, the hole is only going to allow fire enough as holes dia. so a smaller dia. hole should equal out the different pressure and not blow out the charge-load. also the fff is more fast burning -more power than rifle ff powder, so the combustion shouldnt over burn just because a hotter spark. the hammer as is should very easilly pop a 209 providing its at right height.and now back to original question, as the 209 is exactly same size as taps for the 11 nipple, the new nipple would need turning from stock larger then threaded correctly then 209 hole drilled into bigger stock, and smaller hole like .025 instead of current .028 should work nicely, then the reliability of 209 without caps constantly falling off as cylinder spins. my 2 cents. jus dont have the tools to try it myself.