Knight muzzleloader primer plastic question

[Wa hunter]

What is the difference between the orange and red plastic primer pockets other than price? I have been using the red ones and get a lot of blow back.  I shoot a bighorn and mountaineer.

[Crunchy]

Good question never even seen those before.  Used to use the red ones.

[Kingofthemountain83]

I believe the orange ones are for the knight disc extreme... I think... Don't know for sure... I use the red ones with a bighorn...

[Kingofthemountain83]

I believe the orange ones are for the knight disc extreme... I think... Don't know for sure... I use the red ones with a bighorn...

And you'll get blow back with anything... Even the 11's...

[ASHQUACK]

I use the red ones on my wolverine 54.

[pickardjw]

The orange is for the, "Original DISC" system.

"The Original DISC 209 Muzzleloader Primer Ignition System makes loading and shooting easier...We invented dependable DISC™ ignition in 1997...Fits the Knight Original DISC"


The red is for the updated, "Full Plastic Jacket" DISC system.

"We invented dependable DISC™ ignition in 1997—black powder shooters called it “the best ignition system on the most innovative muzzleloader of our time.” But we didn’t wait for the competition to catch up, so our DISC™ ignition evolved into the Full Plastic Jacket 209 Muzzleloader Ignition System...Fits all Knight models made since 2004, including the MHS DISC Extreme, DISC Extreme, Wolverine 209, Bighorn, TK2000, or USAK (manufactured after 2003)..."

Attached image is of the latter showing the bolt geometry that should be pretty telling.

Wonder if @Sabotloader has any cool history/facts about the differences.

[Wa hunter]

Ahhhh, that makes sense thanks for the great response Pickardjw

[lazydrifter]

If you want to get away from the blow back on your Mountaineer go to a bare primer bolt and then either shim the primer pocket on your breech plug or use a heat resistant O ring in the primer pocket.  I shoot a Disc Extreme with the O rings and I get zero blow back.