On Thursday, November 20, 1980, a U.S. federal trademark registration was filed for ACCRA-SHOT by ANDERSON MANUFACTURING COMPANY, INC., KENT 98032. The USPTO has given the ACCRA-SHOT trademark serial number of 73286952. The current federal status of this trademark filing is CONTINUED USE NOT FILED WITHIN GRACE PERIOD, UN-REVIVABLE. The correspondent listed for ACCRA-SHOT is Keith S. Bergman of 201 Columbia Bldg., Spokane WA 99204, . The ACCRA-SHOT trademark is filed in the category of Firearm Products . The description provided to the USPTO for ACCRA-SHOT is Firing Mechanisms for Non-Cartridge Firearms.
I can remember when the ACCRA-SHOT primer adapter hit the market. I was the catalog editor (among other things) for Dixie Gun Works ... and received a few samples to photograph ... try out ...and write up for the catalog. I absolutely loved the idea of being able to use small pistol primers or small rifle primers for igniting a, then, revolutionary new "black powder substitute" - known as Pyrodex ... the new "Replica Black Powder"!
The new powder was definitely a bit harder to ignite than black powder ... that's why Hodgdon Powder Company never recommended it for use in flintlock muzzleloaders. Even with standard No. 11 caps, the shooter who shot a lot would occasionally experience a long hang fire or a total misfire. But, the hotter small pistol and small rifle primers, using the Anderson Mfg. ACCRA-SHOT, pretty much eliminated such ignition failures.
Did I use the adapters on the muzzledloaders I hunted with back then? You Bet I Did! If you look real close at the "nipple area" of that custom half-stock I built in 1983, with a pronghorn buck taken with the rifle that fall (above left) ... you'll see that shiny stainless steel ACCRA-SHOT.
One of the ACCRA-SHOT primer adapters was also installed on the very same rifle when taking the buck at right - more than 20 years after the rifle had been built. Not only did the adapter and primers put more fire in to the powder charge ... the set up was also more sure-fire during a wet weather hunt. The morning this buck was shot, it had rained most of the morning ... before this buck offered a 150 or so yard shot. Ignition was spontaneous.
Most of the time, I used either standard CCI No. 400 Small Rifle Primers ... or No. 450 Small Rifle Magnum Primers. Typically, I could get in 7 or 8 shots before primer fouling inside the adapter built to the point that it became a bit difficult to thread off the cap and get the spent primer out. But when hunting ... one or two shots were all I would normally take during a day of hunting big game. When at the range, I would keep a cleaning patch and small container of cleaning solvent close at hand. Between shots, I would dampen a patch with solvent, then lightly wipe the primer carbon from the primer seat and inside the cap ... which included the firing pin.
While I can't remember seeing the ACCRA-SHOT primer adapters for sale since the early 2000's, a company known as Warren Custom Outdoor is now offering a beefier version of a primer adapter, shown above on that same old half-stock .50 caliber rifle (now with a newer barrel). However, this adapter is built for using No.209 shot-shell primers for ignition ... and has been dubbed the Mag-Spark. The one shown here has actually been on the rifle since 2009 ... and has now been used to ignite somewhere close to 1,000 rounds!
Using a modern primer for ignition with a muzzleloader is really nothing new. Hiram Berdan (of Berdan Sharpshooters fame) patented the rifle primer in 1866, and custom rifle makers who were still building deadly accurate long-range muzzleloading target (and sniper) rifles quickly followed with ignition systems which relied on an enclosed primer for setting off the powder charge. The rifle shown directly above, incorporating a primer ignition system, was built by renown rifle smith Norman Brockway in the late 1860's.
Back in 2009, NORTH AMERICAN MUZZLELOADER HUNTING tested and reviewed the Warren Mag-Spark - but we lost that page when switching website hosting services in July 2011. So, I've decided to obtain a couple of the No. 209 primer adapters for our two Pedersoli percussion Hawken rifles, and do some additional test shooting. Watch for that review toward the end of June or the first of July.
If you've used the Mag-Spark, or the earlier ACCRA-SHOT, please use the comment section for this post to share what you liked ... or didn't like ... about using these adapters, or using a primer for muzzleloader ignition. - Toby Bridges
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Traditional Muzzleloader Hunting
This blog is made possible by Davide Pedersoli & Co., Dixie Gun Works, Traditions Firearms, Green Mountain Rifle Barrel Co., October Country, and Hodgdon/GOEX powders. The topics presented here will be devoted entirely to shooting and hunting with muzzleloading guns of pre- 1860's design.