Who's tried
08-01-2015, 06:22 PM
#1
Nontypical Buck
Thread Starter
Join Date: Feb 2015
Location: Illinois
Posts: 3,695
Who's tried
I was just doing a bit of research and came across this modification for Thompson Centers. Converting the 209's to small rifle primer shells. They are using a .22 hornet shell. Just prime/reprime it. I have suspected what's called "lift" for some time now with mine. I get a low shooter sometimes. Usually means that I was loose on the powder at ignition. Thinking that 209 is creating enough energy to lift the bullet/sabot a bit before the powder gains pressure. I'm wondering if this conversion has been tried by anyone here and whether or not it would provide enough flame to light up BH209?
Edit to add: After further review they actually changed the design and are now using 25 ACP shells. No trimming of the shells needed to fit.
Link to this is here if you want to read up on it all http://www.muzzleloadingbullets.com/Articles.asp?ID=272
Edit to add: After further review they actually changed the design and are now using 25 ACP shells. No trimming of the shells needed to fit.
Link to this is here if you want to read up on it all http://www.muzzleloadingbullets.com/Articles.asp?ID=272
Last edited by super_hunt54; 08-01-2015 at 06:29 PM.
08-01-2015, 06:56 PM
#2
Nontypical Buck
Join Date: Mar 2009
Location: Saxonburg Pa
Posts: 3,925
Don't waist your money on it. 209's are much easier and more accurate as well. A guy I know converted and regretted it later. Ronlaughlin likes his I'm pretty sure but I think it's a big waist of time and money.
08-01-2015, 07:06 PM
#3
Nontypical Buck
Join Date: Aug 2008
Location: Rapid City, South Dakota
Posts: 3,732
NO, no Tom, what i am using is Large Rifle Magnum primers in the special adapters that PRbullet makes, and sells. Those 25 acp brass can only take small primers, and aren't hot enough to burn Blackhorn. Large Rifle Magnum primers work good igniting Blackhorn, whereas the small primers don't.
08-01-2015, 07:22 PM
#4
Nontypical Buck
Join Date: Mar 2009
Location: Saxonburg Pa
Posts: 3,925
NO, no Tom, what i am using is Large Rifle Magnum primers in the special adapters that PRbullet makes, and sells. Those 25 acp brass can only take small primers, and aren't hot enough to burn Blackhorn. Large Rifle Magnum primers work good igniting Blackhorn, whereas the small primers don't.
08-01-2015, 07:41 PM
#5
Nontypical Buck
Thread Starter
Join Date: Feb 2015
Location: Illinois
Posts: 3,695
Ron, do those large rifle primers create as much force in your rig as the 209's do? Granted it's not a HUGE variance that I am getting sometimes but it's one that bugs my OCD! Me no likey my OCD to get bugged!
08-02-2015, 03:36 AM
#6
Nontypical Buck
Join Date: Aug 2008
Location: Rapid City, South Dakota
Posts: 3,732
What's noticeable when using the magnum large rifle primers, is the carbon build in the flame channel is less. The build in the flame channel, seems softer when using the Federal large rifle magnum primer.
Another thing noticed is that the flash hole doesn't erode, and grow larger. One of my breech plugs had over 700 shots through it, when i quit counting. The rifle primers seem to burn cleaner.
Can't say anything about the 'force'. Wouldn't know how to measure it.
Another thing noticed is that the flash hole doesn't erode, and grow larger. One of my breech plugs had over 700 shots through it, when i quit counting. The rifle primers seem to burn cleaner.
Can't say anything about the 'force'. Wouldn't know how to measure it.
08-02-2015, 04:54 AM
#7
Giant Nontypical
Join Date: Nov 2005
Posts: 6,585
Ron, the easiest way is to shoot a PRB with just the primer and chronograph the velocity.
I am not sure about this but I believe that they still use ground glass in the shotgun primers which would explain why they are hard on BP and vent liner.
I am not sure about this but I believe that they still use ground glass in the shotgun primers which would explain why they are hard on BP and vent liner.
08-02-2015, 07:35 AM
#8
Nontypical Buck
Thread Starter
Join Date: Feb 2015
Location: Illinois
Posts: 3,695
Chronograph the velocity? They shouldn't exit the barrel! Even a .209 doesn't have THAT much pressure. Maybe enough to move it up the barrel 6 inches or so but not enough to push it out of a barrel with any real measurable speed.
Ron, would you mind linking me to somewhere that makes those adapters. I have 2 spare breech plugs anyway and wouldn't mind getting one done up just to test this out.
Ron, would you mind linking me to somewhere that makes those adapters. I have 2 spare breech plugs anyway and wouldn't mind getting one done up just to test this out.
08-02-2015, 07:45 AM
#9
Giant Nontypical
Join Date: Mar 2010
Posts: 5,605
Chronograph the velocity? They shouldn't exit the barrel! Even a .209 doesn't have THAT much pressure. Maybe enough to move it up the barrel 6 inches or so but not enough to push it out of a barrel with any real measurable speed.
Ron, would you mind linking me to somewhere that makes those adapters. I have 2 spare breech plugs anyway and wouldn't mind getting one done up just to test this out.
Ron, would you mind linking me to somewhere that makes those adapters. I have 2 spare breech plugs anyway and wouldn't mind getting one done up just to test this out.
It has been done using a 32cal Green Mountain squirrel rifle.
http://www.namlhunt.com/mlprimers.html
08-02-2015, 09:30 AM
#10
Nontypical Buck
Thread Starter
Join Date: Feb 2015
Location: Illinois
Posts: 3,695
It has been done using a 32cal Green Mountain squirrel rifle.
http://www.namlhunt.com/mlprimers.html
http://www.namlhunt.com/mlprimers.html