When I once did some searching on the BP vs Pyrodex subject, I found an interesting site which included videos of a series of ground tests of a rocket deployment:

http://www.pratthobbies.com/info_pages/pyrodex/pyrotest.htm

It seems like the key with Pyrodex is to keep it contained while burning for a longer span of time -- they had to wrap their plastic ejection canister in 3 layers of electrical tape to get a decent deployment.

Nevertheless, I'm sticking with BP for the foreseeable future. particularly since I'm new to high-power.....I've made the trek over to Blunderbuss to get some -- as soon as I asked for 4F, the owner said "Rocketeer, eh?".

75 GRAINS ?? What is that?! One of those Wimpy Girly Guns?! 😯
We have always used 110 grains 8)
And If there aint a big fog bank, after you fire, how do you get any protection from the enemy?

Actually, I shot 100+ grains of Pyrodex and I couldn't get my gun sighted in. Remington suggested I go a lot lower, and I started at 70 and ended up at 75. VERY accurate. BTW, I looked at my bullets - they are 450 grain -- but the 75 grains of Pyrodex was accurate. It is counterintuitive to cut back on Pyrodex, but that is what I did and it made a lot of difference.

I use 777 in 50 grain pre cast pellets for my inline (junk, don't light well), 4F in my pistol and KY Long rifle, Pyrex in my Thompsons. I have a lot of powders sitting in field boxes. 😀 I haven't been brave enough to try and shoot my real ones - 3 band Enfield & Percussion cap musket.

Anyway. We digress.

Did you get what you wanted yet Scott????? BAHAHAHAHA

That you are using?

Thanks for this tip. I'm going to test it out. I have the Quickburst e-matches made from their kit. Curious to see if these will light up Pyrodex.