458 Lott 730 grain

[Natenator]

Hi all,

New here but not to reloading and not to cast boolits, just cast boolits with modern powders. I ordered some Matt's Bullets 730 grain .458 gas checked hard cast for use in 458 Lott. Looking for recommended guidelines for starting charges and appropriate powders. I did search the forum but did not find what I was looking for.

Powders on hand are: IMR 3031, H4895, H4198, BLC2, H335, IMR 4064. Powders in my area of Ohio I can find are most IMR, Hodgdon and Alliant powders. I don't have the Quick loads program. Goal is velocity with accuracy for maximum penetration and impact (knock down). Especially needing maximum penetration for solid bone. Obviously I will need to work up my own load for my own rifle CZ550 American Safari, but I need a starting point and perhaps data that someone has worked within. Any help or direction would be appreciated.

Also will be working up a load for hard cast gas checked Lyman 550 grain (forget mould number but discontinued). Same powders, same inquiry.

First post so...about me. I live in central Ohio and am in law enforcement. On my 20th year of that. Shoulda been a firefighter.

Nate

[leadhead 500]

Welcome to the forum, the only person that I can think of on here that’s loaded the big lead in the 458 Lott is ( Ironduke ). I checked and he hasn’t been active for a couple months. You might send him a message on here and wait for him to reply back.

[Tatume]

In 2007 I did some testing for a commercial caster using a 458 Win Mag Ruger No. 1. The bullets were 720 grain WFNGC loaded to 1700 fps in Winchester cases. Powders used were IMR 4895, 4198 & 3031. Recoil was severe. If you want to know more, PM me.

[Natenator]

Thanks to both. PM sent Tatume

[725]

Welcome aboard. I have done some work with Ruger #1 .458 WM bored out to .458 Lott. Have shot a few 500 monolith solids but only at various book loads. More than enough for me. Even factory .458 WM's were such recoil producers, I looked for a way to tame it all down. Reviewing my notes, I find only .458 WM 350 grainish load data which is not what you are looking for.

One, unrelated to your request, thing is how I turned it all into a real ***** cat of a shooter. Being a two piece stock, I was able to install a mercury recoil reducer tube in the rear stock. (There are a few tricks to make it work well.) Also, I shortened the rear stock and installed a soft pad. Together, they make shooting heavy loads a breeze. Your CZ is a one piece stock, but there are still ways to install a merc tube and, of course, installing a soft recoil pad is easy.

Best of luck

ps; John Ross just posted a video on him shooting a 4 bore. PM him. He seems to know about shooting the big casts.

[Natenator]

CZ has a cavity in stock for Mercury reducer. Just needs opened a bit more. Is offered standard for 505 gibbs

[44Blam]

... recoil was severe ...

Seems to me that it has knock down capability at both ends!

[chuckbuster]

I wonder how much an Ohio NOn-Resident License Tyrannosaur license is?

[Natenator]

I wonder how much an Ohio NOn-Resident License Tyrannosaur license is?

Haha. Brontosaurus.

[Tatume]

The legal minimum cartridge is the 577 Tyrannosaur!

https://en.wikipedia.org/wiki/.577_Tyrannosaur

[Winger Ed.]

The legal minimum cartridge is the 577 Tyrannosaur!]

Wow. Looks like you'd need the load data for .50BMG for that thing.

[leadhead 500]

I have shot the Lyman 462560 in a Ruger M77 458 Winchester magnum with a full bore load and it is about all you want ahold of out of sandbags from the bench

[Natenator]

I have shot the Lyman 462560 in a Ruger M77 458 Winchester magnum with a full bore load and it is about all you want ahold of out of sandbags from the bench

I have that bullet coming as well for use in the Lott. Do you remember or have the load available for it? I need a starting load with appropriate powders.

[leadhead 500]

Sent you a message on the Lyman

[44Blam]

The legal minimum cartridge is the 577 Tyrannosaur!

https://en.wikipedia.org/wiki/.577_Tyrannosaur

Bullet mass/type Velocity Energy
750 gr (49 g) Monolithic Solid 2,480 ft/s (760 m/s) 10,240 ft⋅lbf (13,880 J)

My lord - 10,240 ft-lb...

[leadhead 500]

You better own a wheel weight factory if you cast the 730 grain, that’s 9.5 bullets to a pound of lead

[Mr_Sheesh]

I suspect we're in "It's worse to SEND this than to receive it, almost" territory with some of these rounds, unless it's in a pintle-mounted weapon form?

[Natenator]

I suspect we're in "It's worse to SEND this than to receive it, almost" territory with some of these rounds, unless it's in a pintle-mounted weapon form?

Well, a .50 bmg at 20 lbs on one platform, 750 grain bullet at 3000 fps wasn't bad to me. I'm at at a 10lb rifle 730 grain bullet with likely under 2000 fps. I think I'll be okay. I've shot the Win Mag several times and recoil, while stiff wasn't uncomfortable for me. I'm 6' 240 and powerlift...if mass type makes a difference.

[lar45]

Hello and welcome to the forum.
Did you get some load data? I have quickload and could run some numbers if you want, but I'll need the bullet length and loaded length.
Glenn.

[Natenator]

Thank you Glenn. I will PM you probably Friday about it? No data yet. Even JD Jones didn't really have any ideas for me yet except quick loads.