Does anyone know of a co that makes a 25 acp breech plug conversion for a knight disc extreme?has any of you ever shot a sierra 45 70 bullet in a 50 cal? what sabot did you use?

Greetings. Welcome to the forum. 45/70 bullets are great in MLers. Bryce Towsley recommends them in the closing chapter he wrote in "Rifle Bullets for the Hunter, A Definitive Study". As for sabots, you need an MMP "Orange" HPH.458 sabot, here:

http://www.mmpsabots.com/

Chap Gleason