moridgerunner

I have read much about enlarging the hole in the breachplug to better ignite blackhorn209. My questions are
1. Is it necessary?
2. If yes then should I own 2 breechplugs; 1 for blackhorn and 1 for everything else?
Thanks

MountainDevil54

use a #65 drill bit to give it a .035" flash hole and then keep a #32 drill bit on hand to clean the carbon out of the flash hole. Simple as it gets and will last the average shooter a life time.

Gm54-120

moridgerunner

1. Is it necessary? yes and no My Accura 45cal V1 was nearly 100% and pretty clean with Win209s. Keep the plug's channel/hole clean and you will likely be very happy.

2. No need to own 2 although i have 4 ive tested and a slightly larger flash channel and hole will ignite any powder well. IMO with the correct fitting primer a modded plug is VERY clean.

Some of us have too much time on our hands want it all including a removable vent liner and a nearly spotless breach. My range sessions sometimes go for 4+ hours so im picky.

All my Knight rifles based on DISC actions are also converted with Lehigh plugs, so its not just a Accura thing for me.

Ron's modded plugs and made from scratch plugs are very good though and very well made. I can shoot over 40 shots and never need to clean any carbon out even with so called "dirty" primers with BH209 until im done for the day. Performance in my 45cal also feels like its improved with a couple of the designs ive tried but i have no chrono data to back it up. both my 45s crack like a centerfire now though, even bystanders/friends notice that it doesnt sound like a ML.

At the very least enlarging the flash hole a tiny bit would likely make 99% of shooters happy and i highly doubt you would ever have a hangfire in the field.

ronlaughlin

You know, when i think about it, drilling a flash hole larger, kinda seems like smoking cigarettes. It leads to an earlier demise, and there is second hand smoke i.e. blow by.

Gm54-120

My old Win Apex with a OEM CVA plug that had many shots on it had a slightly larger hole. It never hangfired or FTF but was pretty dirty. I think it had eroded to about .033+ maybe but i was using a torch pic for cleaning. They are kinda rough and may have caused it to enlarge faster.

When i added one of your reduced head spaced plugs it was fine though with a .033 Lehigh vent liner.

MountainDevil54

haha no it doesnt give more blow by. all but 1 of my rifles use the .035" flash hole and they are clean. Using primers that do not fit well is what makes things dirty. I know the winchester 777s are dirty as sin in every rifle ive tried them in, thats why i no longer use them.