Thread: 450 bm

I was keen on the 1/16 twist as well for my Lyman Gould bullet moving along nice and slow .

Had read good things about the Gould bullet so when I saw one on trade me I got it , when it turned up the misses asked which rifle it was for I just smiled, and then COVID arrived in the country and it took awhile to get a 45/70 .

So did u have to buy 2 sizing dies for your cast bullets? .458 for the 45/70 & .453 for the 450 bushmaster? How do the cast look after the smaller sizing die?

Morning, a 452 sizing die come with the Lyman mould and I have never sized for my 45/70 , just powder coated and loaded and have had good results so far , for my 450 I have sized after powder coating and they seem to come out better then doing it before coating .

Originally Posted by Avopik

So did u have to buy 2 sizing dies for your cast bullets? .458 for the 45/70 & .453 for the 450 bushmaster? How do the cast look after the smaller sizing die?

i would have gone 45/70 but really wanted a bolt action so got a sweet little ruger

Are they Hornady subsonics the 395 gr? I’ve found & heard that Hornady seem to run their subsonics slightly over the speed of sound to provide back pressure to cycle the semi autos they are so fond of… for instance the 45/70 subs I initially bought were running at approx 1140 fps through my 18” barrelled rifle. I pulled the bullets & reduced the powder charge from 18.8 gr to 16.5 gr to get the 1,030 fps I was looking for .. Good Luck

Originally Posted by Avopik

Are they Hornady subsonics the 395 gr? I’ve found & heard that Hornady seem to run their subsonics slightly over the speed of sound to provide back pressure to cycle the semi autos they are so fond of… for instance the 45/70 subs I initially bought were running at approx 1140 fps through my 18” barrelled rifle. I pulled the bullets & reduced the powder charge from 18.8 gr to 16.5 gr to get the 1,030 fps I was looking for .. Good Luck

@Avopik Do you know what powder Hornady used for those sub loads ?

I see the Hornady subs come in small and large rifle primers , the few box’s I have brought have been one or the other.