I bought the Pa Pellet. This is my first flintlock. I got the camo/nickel version. I love the gun. I shoot loose 777 in her, Goex 4f to prime. Fast ignition, very few misses once I learned a thing or two. First of all, don't load no 150 grains of anything in this gun. You are wasting your money and threatening the integrity of the gun. I doubt that all the powder will burn in the barrel anyway. I shoot 80 gr. 777 2f and a 295 gr. Powerbelt. She goes off like a cannon and really shoots flat. I think 80 gr. 777 equals about 92 gr. of BP. No need for more powder IMO. It had a stiff trigger. It would actually hurt your finger to pull it even one time. I removed the lock and adjusted the sear till the catch was just enough to cover the tip of the pin in the notch. Real nice now, not too much hair trigger either. I polished the pin a little with steel wool and lubed the works with synthetic grease. What a world of difference a little tinkering will do.I found the frizzen was not swinging open completely so I removed it and polished the ends to make a little more tolerance in the journal and greased it. She has lightening fast lock time now. She is designed to shoot Pellets but a waste to do so IMO. You have to dump a trickle of loose in to fill the channel to the t-hole to shoot Pellets. Easier to just use loose and be done with it. If you can tinker a little with things, I highly recommend this gun. Good for the money.
Oh also,
The ignition is fast, like centerfire, if you do your part. A flint needs adjusted often, that's just the nature of the beast. If you wipe the flint and frizzen with alcohol after each shot, you should have no problem. You can buy the little individually wrapped alcohol wipes at the store, they are good to take hunting in your bag. Stay away from sawed agates,they don't last too long. A good English flint or Amber French is the best way to go. The only thing that affects my lock time is quality of spark, now that I have fine tuned it a little.
What folks don't understand is that a flintlock needs paid attention to. As long as you keep her clean and adjusted, they are very reliable and rarely misfire. Oh yea, by all means you could try the Pellets, it is designed for them. There is a flash funnel in the breech plug that you have to fill with loose powder though. A couple of pushes of the pan primer dumped down the barrel should do it. I just premeasure and fill prescription bottles with charges of loose powder to avoid measuring in the field. I never bothered with the Pellets.