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I have 2 rifles with what appear to be the same BP. Both my Accura 45 and my Win Apex 50. Neither has ever failed to fire or hang fired using BH209 and 3 different primers. CCI209, CCI209M and Win209 primers have all been 100% and spontaneous ignition.
The primer side (pocket) of the Accura 45 is almost spotless even after 20 rounds and Win209 primers. The Win Apex gets dirty quick and has a new BP. It got dirty with the original too. Obviously it is getting more blowby into the action than the 45.
A 45 with the same 100gr charge as a 50cal should generate even more pressure so i find it a bit odd considering it appears to be the same BP as the Accura 50 and Win Apex 50.
The only other thing i can think of is that i almost never exceed 100gr charges. CVA rates their guns for 100grs of loose as max. I would wager many people exceed this recommendation and get more blow back/carbon into the flash channel.
My Ovation 50 does have a vent liner although they dont call it by that name. I have fired many heavy charges with it. The BP is even totally exposed but primers are almost always spotless when i remove them. Its also has never failed to fire in any way. Primers can be a bit hard to remove though because of the firing pin system gets tight against the primer after a heavy charge.
I really do like the idea of adding the Lehigh vent liner though. It looks like a very well made product. It might be just what my Win Apex 50 needs to shoot "as cleanly" as my Accura 45.
BTW according to Dan at Ramshot .032-.036 is the optimal size for the flash hole and has anyone tried a small wrap of Teflon tape on the primer. Creating a tighter seal in that area should "in theory" help also.
Great thread too, i enjoy the technical side sometimes. Love seeing new ideas. Adding a convex liner to a concave BP makes lots of sense. Seems like the best of getting both good ignition and reducing blowby. :yeah:
The primer side (pocket) of the Accura 45 is almost spotless even after 20 rounds and Win209 primers. The Win Apex gets dirty quick and has a new BP. It got dirty with the original too. Obviously it is getting more blowby into the action than the 45.
A 45 with the same 100gr charge as a 50cal should generate even more pressure so i find it a bit odd considering it appears to be the same BP as the Accura 50 and Win Apex 50.
The only other thing i can think of is that i almost never exceed 100gr charges. CVA rates their guns for 100grs of loose as max. I would wager many people exceed this recommendation and get more blow back/carbon into the flash channel.
My Ovation 50 does have a vent liner although they dont call it by that name. I have fired many heavy charges with it. The BP is even totally exposed but primers are almost always spotless when i remove them. Its also has never failed to fire in any way. Primers can be a bit hard to remove though because of the firing pin system gets tight against the primer after a heavy charge.
I really do like the idea of adding the Lehigh vent liner though. It looks like a very well made product. It might be just what my Win Apex 50 needs to shoot "as cleanly" as my Accura 45.
BTW according to Dan at Ramshot .032-.036 is the optimal size for the flash hole and has anyone tried a small wrap of Teflon tape on the primer. Creating a tighter seal in that area should "in theory" help also.
Great thread too, i enjoy the technical side sometimes. Love seeing new ideas. Adding a convex liner to a concave BP makes lots of sense. Seems like the best of getting both good ignition and reducing blowby. :yeah: