Yoter

Ok you got me... how do you or the state consider a Bighorn as having a pivoting hammer?

Powder... forgot the length of barrel on a Bighorn - if it is 22/24 I would use T7-3f if it is 26" then T7-2f

Bullets: According to PowderBelt their all lead bullet is legal in Idaho - have got anybody in the State offices to agree with that yet though. If you were going to use a PB - I would go with the 295 for deer/ 348 for elk. But to be honest with you I would skip PB's altogether and use Bull Shop 460 grain Conical on both dere and elk. The Bull Shop is a slip fit just like putting a sabot down - but you have to find the size of your barrel and if it is a newer Bighorn - I am betting a .503 Bll shop is what you need. I also use a shot card .125x.510 under the bullet keeps the T7 from melting the lead + plus helps wipe the barrel in and out...

Caps.... first choice Dynamint Nobles 1075+ these wrok great...
sencond choice CCI #11 mag caps

If you get that bighorn approved - then my remingtons and my white ought to be legal....