The CF bullets actually expand before the petals release. When the bullet doesn't have enough velocity to shear the petals it makes a perfect mushroom. It's actually pretty cool, I've seen it in some testing way back.

Yeah but they are listed as fracturing/frangible so I would need to research legality of them. I'm pretty sure most states with the expandable regulation go by LISTED operation of a bullet.

Super, Yes but it DOES say "or COMMISSION REGULATION" , however that is addressing the conformation of the projectile, IE round ball, Minnie ball maxi ball or saboted bullets, which were all illegal to use in the past. It is not addressing the prohibition of the use of a bullet that is not made to expand on contact, that is the context of the regulation addressing projectiles for muzzle loaders. Think about it, why would they allow non expanding projectiles for flintlocks and not for center fire guns? Yes, it could have been made clearer for those who do not have experience in applying the law and the regulations. Anyway, I'm done, my intent was to make it clearer, which apparently didn't happen. BTW, I am not addressing the particular projectile that caused the question, I am not familiar with it and I won't guess about it.

Like I said, I sent an email off to the PGC after reading this post. I would like to see if they respond and if so I will post it here.

I am sure they will answer, did you ask if non expanding bullets were legal in flintlock season or did you ask about a specific bullet?

Oldtimr I actually cut and pasted the post with the regs as written in the game laws and the hunting digest (that you get with your license). I asked for clarification as to why the ML section states 'any projectile can be used".
We'll see what they say.

That should work.

Here is my letter - their response, my reply and their second response:
Please read below the contents of a forum post. I would like a clear definition of the law as it pertains to projectiles for big game.
The general regulations state that the projectile must be either all lead or designe to expand on contact.
But, the muzzleloader regulations state that any single projectile can be used.

I believe the muzzleloader requirement should be reworded to state that any single projectile can be used provide it is constructed of all lead and/or designed to expand on contact as stated in the general regulations.

Please advisse so I can clarify this with my fellow forum members.

2322. Prohibited devices and methods.

(a) General rule.--Except as otherwise provided in this title or commission regulation, no person shall hunt, kill or take or attempt, aid, abet, assist or conspire to hunt, kill or take any big game, except wild turkey, with any of the following devices or methods:

(1) Any device other than a centerfire or muzzle-loading firearm or bow and arrow.

(2) Any automatic or semiautomatic firearm, except that any semiautomatic firearm modified to permit one shell in the chamber and no more than four shells in a magazine may be used by a person who suffered an amputation or lost the total use of one or both hands.

(3) Any firearm propelling more than one projectile per discharge.

(4) Any projectile which is not all lead or which is not designed to expand on contact.
(5) When any big game is swimming.

(6) By any other method or device which is not specifically authorized or permitted by this title or commission regulation.
Flintlock Muzzleloader Season: Only single-barrel long-guns .44 caliber or larger, or hanguns .50 caliber or larger with a flintlock ignition system. The firearm must be an original or reproduction of a gun used prior to 1800, with iron, open "V" or notched sights (fiber-optic inserts are permitted). A flintlock ignition system consists of a hammer containing a naturally-occurring stone which is spring-propelled onto an iron or steel frizzen, which, in turn, creates sparks to ignite a gunpowder.Flintlock muzzleloader hunters may use "any single projectile," including sabots, and mini and maxi balls

Antlerless Muzzleloader Season: Only single-barrel muzzleloading long-guns .44 caliber or larger, or muzzleloading handguns .50 caliber, including in-line and percussion sporting arms. Use of scopes and other lawful sighting devices is permitted. Fiber optic inserts may be used.

REPLY:Simple answer: Yes, muzzleloading projectiles must be all lead or designed to expand on impact.

Section 2322 (a)(4) is applicable to all big game, except for wild turkey. This includes muzzleloader deer seasons. The Commission can of course establish regulations to the contrary, but current regulations do not direct this result.
We’re not sure where you are getting the “any single projectile” text from. The current regulations in Section 141.43 requires “single-projectile ammunition”, but does not provide any contradiction to the statutory projectile requirements. The same is true for the current digest.

MY REPLY :Mr Howell
Thank you for your prompt reply. The 'any single projectile' comes out of the PGC laws and regulations. I cut and pasted here:
Flintlock Muzzleloader Season: Only single-barrel long-guns .44 caliber or larger, or hanguns .50 caliber or larger with a flintlock ignition system. The firearm must be an original or reproduction of a gun used prior to 1800, with iron, open "V" or notched sights (fiber-optic inserts are permitted). A flintlock ignition system consists of a hammer containing a naturally-occurring stone which is spring-propelled onto an iron or steel frizzen, which, in turn, creates sparks to ignite a gunpowder. Flintlock muzzleloader hunters may use "any single projectile," including sabots, and mini and maxi balls.

THEIR SECOND REPLY:Thanks. I’ll pass that along to appropriate staff.

This answer still stands:Yes, muzzleloading projectiles must be all lead or designed to expand on impact.

Thanks for getting that Bronko. Means we can't use the XP at this time even though it causes as much, if not MORE internal damage (where there is a high fluid concentration) as most any expanding type bullet I have used in the past and doesn't cause anywhere near the meat damage entering or exiting. But like most all newer technologies in arms and ammo, it takes Government officials a while to catch up and get educated.

Hey Super Hunt guy, i think we all knew you were talking about minimum calibers and not bullet weights...