ronlaughlin
Check the orange text.... also if you get a chance check this busta information on the last page of this, about his development of the BP for a NEF. Just some general information..
http://www.modernmuzzleloader.com/ph...=140919#140919
Thanks Ron... I thought he was working with a regular CVA plug...
So question when the gun is closed does the knurled rim of the QPBP contact the reciever block of the gun snugly?
There is enough space so that one can put a piece of paper there, and close the action, however one cannot remove the paper with the action closed on it.
I really wish I had one to play with I would love to modify one of those plugs but i am not running out an buying a CVA....
What do you want to do to it? Mine has a vent liner installed. Two other fellas have vent liners installed in theirs.
Did you also then open the flash channel? And did you modify the head sapce? If you did what should the OAL be? Did you sink the vent liner into the plug farther than the original flash hole?
Second question... What should the OAL be on QRBP with a w209 installed to be touching the pin bushing... for that matter what should the OAL be for a regular hex head CVA plug....
First of all, that measurement would be different for each individual rifle. I don't know what it is for my rifle and the QRBP. It could be one day i will make a QRBP, and, of course, at that time i will need to know.
As for the hex head plug, i just received a note from a fella saying he couldn't close his action on one of my plugs with a W209 in place, but that it will close on a 209A. Now, i cannot measure the OAL here, because he has the plug, but i will guess for his rifle a good OAL using the W209 will be around 1.305". That is a guess. That is a guess. Another fella ordered a plug with an OAL of 1.310".
When we were making the Lehigh we had the same problem rifle to rifle so I left a .005/7 tolerance in the depth of the primer pocket to hopefully handle that and other primers. Just reading your stuff - i bet the 1.310 could be close to a universal number.
A while ago you installed vent liners in plugs for Saxman. The CVA lad got them to test in his rifle. He wrote about getting a lot of blow by. So.........thinking his rifle was some loose, i figured i would send him a plug with a little longer OAL than some. This is a guess, but the plug i sent him probably had an OAL of near 1.310" with a W209 in place. The plug isn't here, so i can't measure it.
At the time i modified his I had no way of headspacing and he had indicated that his was pretty clean to start with - so i just modified the flash channel and the added a vent liner. The vent liner tends force some of the blow back away from the flash hole. If the timing is right with the exit od the bullet it will suck the blow back right out the barrel with it.