- Joined
- Dec 12, 2020
- Messages
- 1,239
- Reaction score
- 1,920
I've got an unopened jug of BH109 cause I can't get the recommended primers. Using T7 powder/primers this season. Maybe next year I'll break the seal on the BH109
I believe CVA worked with Western on the plug. Hodgdon just purchased it. Its made in Canada, not actually by Hodgdon.
Unless something just changed.................
Very well said. Great post.Thanks, I could well be mis-remembering about who worked with CVA to develop the truly excellent BH 209 breechplug. It has a deep frontal hollow to bring the powder well down into the plug, yet the same very small (.032-33") orifice to direct the hottest possible fire-jet to the powder. That deep hollow is just like the famous "Nock breech" of the later 1700s, which revolutionized shotgun ignition using BP, and allowed much shorter barrels to be used. Very soon after it came on the stage, double guns with today's 27 or 28" barrels began to be in use for shooting flying.
That deep hollow, with its conical base, also removes a lot of "heat sink" character from the breechplug, whose long threads must hold the pressure of today's powerful ML loadings. So the primer can function better in two ways, it is closer to the powder charge, plus the plug robs less of its heat. "Brissance" (primer-power) is maintained better as the fire-jet hits the powder. For BH 209, that is very important for full and consistent powder burns. I'll repeat: never use a "muzzleloader" 209 primer for BH 209. They're weaker, not stronger.
Aloha, Ka'imiloa
Enter your email address to join: