Home Forums Hunting & Shooting Express Rifles and Big Bores Only 458 win mag and loading lite

I shot a one gallon can of roofing tar once that was a good time.
I sold my Model 70 African to a guy who wanted a bigger deer rifle than his brother.
whelennut

Thanks a lot Ed,just when my itch for a .458 Win is gone,I open this thread up and read this.

Now the itch is back.

That's what I'm good at, giving. Attitudes, and now itches.

Ed

Thanks.....I think.

Have you used the 405 gr Rem in your .458?

458WM specs allow a very generous throat, which may cause accuracy problems with lighter (shorter) bullets. Just FYI.

No hogs killed!

Perhaps in theory.

My hunting load is 70grs+ of H-4895 with 450gr Northforks. Spring and summer we have guests and visitors and most of the time we do some shooting. It usually starts with the 308 and goes up from there, seeing as the Northforks are high $$ and have bloodied a few eyebrows I loaded up 50 300gr Barnes Originals last night over 65grs of AA-2495. 1750fps and cheap to shoot. Would probably work wonder on yard bears too!

Have a 458WM CZ that is pretty heavy on theory then. If you look at a SAAMI chamber spec the leade is funnel shaped and starts about 10 thou larger than bullet diameter... This one will get most all cast bullets or jacketed bullets lighter than 450 gns well clear of the case mouth before they begin to engrave the rifling. It will shoot an inch at 100yds with 450 TSX or 500 gn jacketed or you will be lucky to hit a pie plate at 100yds with lighter or most cast. Guess you have different chamber specs on that side of the equater.....

I have come up against this level of ignorance several times since immigrating to the US. For some reason, it is popular to assume Aussies get a different product than you do, even though they are made in the same plant and exported all round the world? I have heard it with cars, guns and even printing presses and it is extreme ignorance to suggest it.

The fact is, Aussies were using BRNO's, the forerunner of the CZ decades before it was heard of here, as Australia was a primary importer from Europe in the decades after the war. That included Tikka's, Sako's and no....there is no such thing as a Garcia Sako there, as Garcia, the importer was only a "local identity" in the USA. Aussie experience with these rifles is among the highest.

As to your claim of accuracy with lighter bullet and using SAAMI as a voice of authority. WOW.

I simply cannot recall all the .458's I have owned or used. Never ever, did one not produce sub MOA performance and half MOA performance is simply nothing to brag about as it is relatively common with this caliber.

If you have a single rifle that does not do that, and......you actually handloaded lighter for caliber bullets for it, I would be interested to know what your loads were, what bullets you used, size of the groups generated, what scope you have on the rifle, and your honest assessment of your shooting prowess to generate sub MOA groups with a cartridge this powerful.

Over to you, as I like to learn as much as anyone else.

I am aware the rifles are the same, should have put a humor icon next to that I guess. My claim for lack of accuracy is the fact that lighter bullets are well clear of the case mouth before engraving rifling which was confirmed after researching chamber minimum dimensions on the SAAMI site. Here is a link, note the leade dimension begins at .4690 (10 thou bigger than bullet diameter). 458WM Just noted good accuracy with longer bullets and terrible groups with lighter as statement of fact, not saying I am a bench rest pro. Off of a solid rest, I believe, most should be able to get those results with some practice (and maybe an extra recoil shield).
I will look up my notes as the loads referred to were worked up a few years ago and my memory is not good enough to post load info online without checking first.

Found this old post with data when working up an accurate light load for my CZ. Cast 458 Load

Can you share your loads with cast and lighter bullets in the 458 that produced such accuracy ?

Here is an old thread about the 458WM throat that mentions the 458JGS reamer. I thought this was pretty informative.
https://www.24hourcampfire.com/ubbth.../5521703/all/458_Win_Mag_Oversize_Throat

Nope.
Never shot a cast bullet and never claimed to either.
I have however, shot from 300 to 600 grain bullet weights in the .458's.

I never knew they made a 600gr for a 458

OK. Cast do behave quite differently to jacketed bullets.

Can you share your jacketed 300-400 gr bullet loads and loading techniques that yielded MOA accuracy?

My articles in the Aussie mags go back to 1985. You will find it easy to research what ever you want. I recommend you go through:
Australian shooters Journal
Sporting Shooter Magazine.
Australian Gunsports
SCI'Australian Hunter.
NSW Deerstalker
There are a few more I don't recall at the moment because of the name changes they transitioned to.
John Woods

That's a pretty strange response to a simple question.

I wrote more articles on big bore rifles in Oz than all the other writers combined. How would you like me to condense that into a response.

seriously, I'd be glad to offer some advice if you have a question? Generic language is not a question so if you will be more specific in what you want to know, I'd be glad to help.

What bullet are you interested in shooting in your .458?

Judging from my limited experience with the 458 win mag you don't have to do anything special to get them to shoot sub MOA groups at 100 yards. Just put ammo in them and have the ability to shoot them well enough.