Info about the ( then) new cleaner Triple 7 209 primers
( I dont know how old this info is ? )
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"There were multiple goals in the development of the Triple Se7en primer:
eliminate or at least dramatically reduce the crud ring from Triple
Se7en (as well as Pyrodex) in the majority of 209 primed muzzleloaders.
While they were at it, they sought to maintain complete reliability when
used with Triple Se7en pellets. Shotshell primers have been a known
quantity for a long time (in shotshells), but Olin-Winchester wanted to
go farther than the previous generations of 209 primers.
They took inline muzzleloaders, loaded them with Triple Se7en pellets,
projectiles, and their experimental primers and froze the entire unit to
minus 50 degrees F. Then, it had to fire T7 pellets without fail. The
also experimented with flame temperature, gas generation, and other
variables controllable by the primer energetic to get the clean ignition
yet reliable extreme performance they wanted.
Accuracy was also important. As a matter of fact, sources report that H.
P. Gregory set records just this year at the NMLRA Spring Shoot using
these new Triple Se7en primers and Triple Se7en loose powder.
How do they rate in "strength"? As this is a new chemical formulation,
it don't believe it is possible to directly compare these primers to
older generation primer mixtures. Based on noise and flame output, they
seem a bit softer than W209 shotshell primers, yet clearly stronger than
the .410 shotshell primers I compared them against. I found no issue
with these primers setting off pellets.
Are they cleaner? Without a doubt, they are radically cleaner than
standard 209 primers. To give myself something visual to easily compare,
I fired a number of standard 209 shotshell primers in Knight red Full
Plastic Jackets. Inside the spent jackets, without exception, was
greasy, black, scummy material that eventually forms hard carbon crud
inside your breechplug, or perhaps in your action.
I then fired the new Triple Se7en primers the same way. Visual
inspection of the inside of the red plastic jackets showed them bright
red and clean, looking as through a primer had never been fired through
them at all. Obviously, these new primers are not laying down anywhere
near the scummy residue that standard 209 shotshell primers do.
With the initial testing I've done so far, I can say that the Winchester
T7 primers do significantly reduce fouling build-up in muzzleloaders
that have that issue, and further reduce carbon build-up inside breech
plugs. It reduced the small, but manageable T7 "stuff" in a Knight rifle
to practically nothing, and significantly reduces internal carbon build
up in the Savage 10ML-II as well. Individual results will vary by make
of rifle, breechplug design, and specific powder charge. Try them
yourself, and you'll soon be a believer.
The Triple Se7en 209 muzzleloading primer is the most significant
advance in inline muzzleloading ignition since the 209 primer itself
first gained prominence. It is easily distinguishable from regular 209's
with its black primer face so there can be no confusion. It is, to my
knowledge, the first new priming compound designed specifically for
muzzleloading and it is a winner. The outside dimensions are virtually
identical to standard W209 primers, so it can be used in place of a
standard Winchester 209 in any muzzleloader designed for 209 primers.
IMPORTANT NOTE: DO NOT USE THESE PRIMERS WITH SMOKELESS
POWER UNDER ANY CIRCUMSTANCES. THEY CAUSE MISFIRES AND
OLIN PROHIBITS THEIR USE WITH SMOKELESS PROPELLANTS."
