Pics of your .458WM's

The American is crap. The M77 Mark II is more refined. I guide hunters... and have more than four decades. Do you know how many times I have found M70 style safeties in the FIRE position on clients rifles while hiking and stalking game? Hundreds... I have never had an M77 move off full safe accidentally. When you are close to game or waiting on stand or action is imminent, you move the safety to "MID"... trigger locked, bolt free... from that position it is quick and quiet to go to fire. The only people complaining about Ruger's 3-Position safety are people who don't know how to use it... many people only think in terms of "on or off," that is not the whole story, or the refined beauty of the 3-Position Safety.
Too funny.
 
TOBY458,

About your Kimber Remchester, nice wood is its best feature.
Otherwise:
Pipe action for economy and ease of production.
Add-on, washer-type, primary recoil lug cleverly hidden by a non-threaded projection of the front of receiver.
Worst of all is the chambering.

I might tolerate it, for the nice wood, if it was chambered for the more powerful SAAMI .458 WIN MAG.
Better make sure it has a SAAMI .458 WIN MAG reamer run into it to extend the throat, to improve it.

Or do you want to just keep it around to poke fun at ?
That's what I do with my unimproved Ruger RSM .458 CENSORED.

View attachment 751372
@Riflecrank I did a little testing with the Kimber this afternoon. I happened to have a 458 Lott loaded out to 3.860 COAL with a 450gr TSX laying on my bench. It will easily chamber in the Kimber. Of course the magazine is way too short to cycle it, but it could be easily loaded and fired. So what does that say about the chamber on this rifle?
 
@Riflecrank I did a little testing with the Kimber this afternoon. I happened to have a 458 Lott loaded out to 3.860 COAL with a 450gr TSX laying on my bench. It will easily chamber in the Kimber. Of course the magazine is way too short to cycle it, but it could be easily loaded and fired. So what does that say about the chamber on this rifle?
It's alotta chamber.
 
@Riflecrank I did a little testing with the Kimber this afternoon. I happened to have a 458 Lott loaded out to 3.860 COAL with a 450gr TSX laying on my bench. It will easily chamber in the Kimber. Of course the magazine is way too short to cycle it, but it could be easily loaded and fired. So what does that say about the chamber on this rifle?
To me it says that you need to lengthen the magazine to take those long cases :cool:
The only issue with the Lott is that the design was stolen and has the wrong name on the cartridge, aside from that it’s fine
Gumpy
 
To me it says that you need to lengthen the magazine to take those long cases :cool:
The only issue with the Lott is that the design was stolen and has the wrong name on the cartridge, aside from that it’s fine
Gumpy
No way to do that on the Kimber. She’s maxed out at 3.6”. Which is all the power I need anyway.
 
@Riflecrank I did a little testing with the Kimber this afternoon. I happened to have a 458 Lott loaded out to 3.860 COAL with a 450gr TSX laying on my bench. It will easily chamber in the Kimber. Of course the magazine is way too short to cycle it, but it could be easily loaded and fired. So what does that say about the chamber on this rifle?
TOBY458,
That means your .458 CENSORED/2.8" Kimber chamber has a non-SAAMI chamber.
The longest load possible using 2.8" brass with that bullet, seated on the fourth/last cannelure is ~ 3.980. With 2.5" brass it is ~3.680" COL (Cartridge Overall Length = COL, not COAL),
as previously illustrated here:

a009-jpg.750880


Anyway, either a 500-gr or 450-grain TSX would be maxed out in a SAAMI .458 WIN MAG throat
with a COL of 3.780" using 2.5" brass.
And a SAAMI .458 CENSORED throat would allow a COL of less than that, 0.1585" less,
due to the shortness of throat, even though using 0.300" longer brass case.
3.622" ought to be bumping the lands with either 450-gr or 500-gr TSX,
in the SAAMI .458 CENSORED/2.8"

Variance from this must be attributed to slop of reamer wobble or throat erosion,
or a pristine chamber with a non-SAAMI reamer for the .458 CENSORED/2.8".

The old original CIP throat for the .458 CENSORED was same as on a .458 WIN MAG.
So that kind of chamber would allow for a maximum COL of 4.080" with the bullet used in your dummy.

CIP eventually changed their .458 CENSORED homologation to match that of SAAMI.
SAAMI and CIP have always been the same on the chamber specs for the .458 WIN MAG.
Unchanged since 1956 release to the gun trade.

CIP differs from SAAMI currently in allowing the .458 WIN MAG/2.5" the same higher MAP as the .458 CENSORED/2.8", with which I heartily agree.

If SAAMI allowed 62,500 psi for the .458 WIN MAG/2.5" (same as SAAMI allows for the .458 CENSORED/2.8") instead of only 60,000 psi,
there would be an MV difference of only 40 or 50 fps between the .458 WIN MAG with COL of 3.340"
and the .458 CENSORED with COL of 3.600",
in same 24" barrels.
 
Last edited:
TOBY458,
That means your .458 CENSORED/2.8" Kimber chamber has a non-SAAMI chamber.
The longest load possible using 2.8" brass with that bullet, seated on the fourth/last cannelure is ~ 3.980. With 2.5" brass it is ~3.680" COL (Cartridge Overall Length = COL, not COAL),
as previously illustrated here:

a009-jpg.750880


Anyway, either a 500-gr or 450-grain TSX would be maxed out in a SAAMI .458 WIN MAG throat
with a COL of 3.780" using 2.5" brass.
And a SAAMI .458 CENSORED throat would allow a COL of less than that, 0.1585" less,
due to the shortness of throat, even though using 0.300" longer brass case.
3.622" ought to be bumping the lands with either 450-gr or 500-gr TSX,
in the SAAMI .458 CENSORED/2.8"

Variance from this must be attributed to slop of reamer wobble or throat erosion,
or a pristine chamber with a non-SAAMI reamer for the .458 CENSORED/2.8".

The old original CIP throat for the .458 CENSORED was same as on a .458 WIN MAG.
So that kind of chamber would allow for a maximum COL of 4.080" with the bullet used in your dummy.

CIP eventually changed their .458 CENSORED homologation to match that of SAAMI.
SAAMI and CIP have always been the same on the chamber specs for the .458 WIN MAG.
Unchanged since 1956 release to the gun trade.

CIP differs from SAAMI currently in allowing the .458 WIN MAG/2.5" the same higher MAP as the .458 CENSORED/2.8", with which I heartily agree.

If SAAMI allowed 62,500 psi for the .458 WIN MAG/2.5" (same as SAAMI allows for the .458 CENSORED/2.8") instead of only 60,000 psi,
there would be an MV difference of only 40 or 50 fps between the .458 WIN MAG with COL of 3.340"
and the .458 CENSORED with COL of 3.600",
in same 24" barrels.
I’ll do some more experimenting and see how long she’ll go. Of course, this all means nothing to me if the loads won’t fit the magazine and feed through the action. The elephant I shot with the 458 Win Mag didn’t seem to complain about a 450gr at 2250 fps. So I don’t think I need more power.
 
20260312_145248.jpg

Mauser 66S in .458 Win-Mag, Zeiss 1,5-4,5x18 Diavari on EAW pivot mount.

HWL
 

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