• If you are being asked to change your password, and unsure how to do it, follow these instructions. Click here

338 Win Mag, IMR 445

msilbernagel

Active Member
Joined
Feb 14, 2021
Messages
27
Location
Clark County, Washington
Hello Everyone,

I'm working with my son-in-law to work up a load for a 338 Win Mag, with Hornady 200gr SST bullets.

Naturally, finding the power you'd like can be challenging - but I do have an unopened 8lb container of IMR 4451,

Challenge is - Neither Hogdon nor Hornady offer information on loads using that powder, though the H4350 and IMR 4350 seem like good choices in their load data.

Scanning forums and previous posts I find little that seems definitive. So - here's my question:

How close are H4350 and IMR 4451? A few have mentioned using IMR 4451 as a replacement but weren't clear on exactly how close it comes.

From what I have read, and lacking hard data, I am inclined to do ladder tests using the H4350 min/max, work up to Max watching for pressure signs, and monitoring velocity with the magneto speed. Thoughts / comments on this notion?

Any favorite loads using that bullet or something close?

This doesn't seem like a popular / common enough cartridge.. so good load data seems scarce.

Thank you

Mark
 

Recent Posts

Top