458 lott 500gr, 550mag 700gr, 550mag 800gr, 600 ok 900gr.

This cartridge was designed ot fill the gap between the various .510 bore and the .585 bore cartridges with a ready supply of headstamped brass and proven feeding reliability. It was also designed to produce 600 nitro express energies and the penetration common to .510 cartridges

Companies supporting this cartridge so far are

Barrels Cut Rifle

Bullets Hawk
Bridger
GS Custom ( Said they would )

Headstamped Brass Quality Cartridge

Loaded Ammo Quality Cartridge

Reloading Dies C&H Tool and Die

Gunsmiths

We are going to do a barrel order for this cartridge anyone wanting a barrel let me know.

Barrels so far
RNS
ED HUBEL
ROBGUNBUILDER
MRLEXMA

RNS

I just got off the phone with Dave Manson from Manson reamers. He reviewed my case drawing and he will provide the reamers and go no go guage. After I send him some cartridge samples he will complete the throating. RNS