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Which Flints Produce the Best Spark?

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I use both Black English flints and Amber French ( Honey ) flints .and find them equally effective . I have used cut Jasper flints and found them to be most excellent , of the knapped flints I think the Black flints are the best because they are less likely to break than the Honey ones and a lot less expensive than the Jasper ones . One thing I have noticed on this forum is when members post pictures of their flintlocks a majority seem to be fitted with a French flint .
 
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OK let's get ready to rumble
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The longest lasting are the grey texas chert Georgetown, best to pressure flake back sharp, best spark are white Oklahoma but are hard to resharpen . french & english about the same ok but don't last as long
 
So sad , I found Rich's flints to be the best I ever used,(twice I have been beaten on woods walks by people who had trouble with their flints and I gave them one of Rich's to use)I still have a couple of his left but will be looking for replacements.
 
I have used AGITE ones. they have worked for me. and they can be rechiped on the edge as with flint ones. they are UBER hard on the frizzens though. as I stated I have used them! not as a rule. I regularly use ENGLISH GRAY flints though as a rule.
 
In the 80's I used the sawn agate that came with the TC kit but learned quickly they had much to be desired.

I currently use commercial Gray English or home knapped chert.
 
With my Bob Roller lock, I use the sawed, polished agates, nothing else last! For my L&R and Siler locks, I am able to use the black or gray flints with success.🐮
 
I'm new-ish to flintlocks but not to muzzleloaders.

Best ignition rock I've used so far is a local stone called Padernal Chert.

I've tride English flints and a few different hand knapped flints from US sources and they work great.

But I kid you not, I've set off the main charge without any priming powder before using the above chert. Not sure if this is a common occurrence, but it hasn't happened with any other flint yet.
 
I'm new-ish to flintlocks but not to muzzleloaders.

Best ignition rock I've used so far is a local stone called Padernal Chert.

I've tride English flints and a few different hand knapped flints from US sources and they work great.

But I kid you not, I've set off the main charge without any priming powder before using the above chert. Not sure if this is a common occurrence, but it hasn't happened with any other flint yet.
It is possible for a spark to enter through the touch hole and set off the main charge, with any flint.
 
Asking that question undoubtedly will produce the most and best sparks. 😄
Actually, the best spark is achieved through a combination of good lock, properly hardened frizzen and a good rock. Decried by some but I have used German sawn flints for decades. They sparked very well for me in a Pete Allen Siler lock and did quite well in others. They also lasted a long-long time. No doubt English black are excellent, I have used them much without complaint.
 

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