H450

[rcs33]

Anyone have any experience with H450? I got hold of some a few years ago and had never opened it. Now that I'm running low on H4831 (with no availability anywhere) I've decided to broaden my horizons.

 

[Orange Dust]

I used to shoot it in a .270 with 130's. Don't remember the primer or load but it was fast.

 

[Another Casual]

Edit: I misread the title. From looking around last production run was in the area of 2001.

 

[Seabeeken]

It is a ball powder used in 50 BMG and was discontinued years ago. It is the best powder I ever used in my 270 with 140 gr. Amazing accuracy!
Treat it like gold.

 

[Orange Dust]

It is a ball powder used in 50 BMG and was discontinued years ago. It is the best powder I ever used in my 270 with 140 gr. Amazing accuracy!
Treat it like gold.

I was thinking for sure it was surplus 20MM powder, but you might be right. Been awhile. Was Mil surplus for sure just like all the old Hodgdon powders. It was good stuff.

 

[cape cove]

I use this in my 270 Weatherby mag. Great powder with the 130-150 gr bullets for accuracy and velocity. The lots I have would seem to have a burn rate between H4831 and IMR 7828, but beware the burn rates between lots in this powder can vary by as much as 4-5 grs. One of the reasons it was discontinued ( I read at the time) was due to this.

 

[rcs33]

I'm putting it in a 340 wthby with 250g swift a-frames

 

[Seabeeken]

It is also quite temperature sensitive. Be careful if working up a max load in cold weather and shooting it in warm weather.