IMO the only real way to replicate the factory ammo is to know exactly what velocity it is generating. That requires a chronograph.

There are many suitable powders for this round. IMO AA#5 is a good place to start. Maybe some if the newer powders like CFE-Pistol or AutoComp might work well but I have not tried them yet.

Velocity isn't the only consideration though. The felt recoil is important in a replica, both the amount and type of recoil. That can only be determined by you in your gun. I would also buy their bullets to load.

Good luck and keep us updated on your progress.

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