Cutting edge 458 win mag data

[Twisted]

Hello everyone I’m new to the group and hate to ask a question that’s been asked 100 times but I’m new and not really tech savvy. I just bought an unfired Winchester super express in 458 Winchester magnum made in 1981. I ordered some cutting edge 450 grain flat nose bullets and im searching for load data. What I have shows 3.310” as suggested oal and I have H322, 3031, 4064, 748, and other suggested powders. Any help appreciated. I’m going to shoot some hornady 3-350 for plinking and have data for those bullets.

 

[Brandon.Gleason]

CEB will send you load data if you email them with the request. They've provided me with probably 10 cartridges worth of data and usually within a day or two of emailing them. info@cuttingedgebullets.com

 

[Twisted]

Thank you sir. I will do that.

 

[AZDAVE]

you might also reach out to @michael458, he has done some serious testing of CEB's in the 458.

 

[Twisted]

you might also reach out to @michael458, he has done some serious testing of CEB's in the 458.

He has already reached out and gave me a lot of data to work with. Thank you for the heads up Sir.

 

[mms45]

What loads did you land on? I’m just starting my process from exactly the same spot. Picked up 75 450gr CEB solids and a m70 in 458

 

[Hyde Hunter]

I am going to run the CEB 420 Raptor on top followed by the 400 Safari Solid with 80 gr of AA2230 at 2400fps should put the hurt on.

 

[mms45]

Thanks mostly trying to find out what the best powder is, I normally load for totally different type of cartridges so I have h1000, N570, 4831. So I’m starting from zero with these lower pressure rounds.

Also why the 400 not the 450 in a 458wm

 

[Hyde Hunter]

AA2230 is a very good powder for the 458 giving higher velocity especially when loading the cartridge longer than factory, also Benchmark is a very good powder. the reason I am not using the 450 is that in my CZ55 with a 19" barrel I get the same point of impact at 25 and 50 yards and the 400 will give outstanding penetration and higher velocity than the 450. also I have some long nose preproduction 400 CEB bullets to see how they work on Buff. what rifle are you using?

 

[mms45]

M70 new make from Portugal