I have a complicated question. I am building a rifle for the upcoming Ohio deer season and have decided that the .450BM most likely fits what I'm looking for. I'm a lefty so I'm looking at rebarreling a Savage 110 in 06 which gives me plenty of length and is available in left. The barrel will be threaded for a suppressor which is currently awaiting release from jail. I found a company called Outlaw State Bullets that makes a 500gr jacketed .458 hunting bullet that they will swage down to .452.
So-I'm looking for anyone with suggestions on powders or with experience in loading something similar in their BM. I know some people have had success with trail boss but I don't think that there is enough space to get around my 1000-1050fps target. suggestions?