.333 O.K.H.

[Bob Nelson 35Whelen]

View attachment 745569
Sorry. This was supposed to be attached to my post.

@DG870
Still runs a couple of hundred fps behind the Whelen with the same weight.
Bob

 

[Bob Nelson 35Whelen]

I don't recall seeing/reading any actual chronographed velocity data for the old Winchester 300 gr load for the .338 Win Mag but, I think around 2450 fps MV is feasible. Of course, that doesn't mean that the old factory load achieved the advertised muzzle velocity.

Recall that the .333 Jeffery (rimless) was renowned for its 300 gr bullet load. Kynoch listed that load at 2200 fps MV from a 28" barrel. (Velocity data from my reprint copy of the 1936 Kynoch/ICI catalog.)

.333" dia, 300 gr: sectional density = .386

.338" dia, 300 gr: sectional density = .375

.358" dia, 310 gr: sectional density = .346


View attachment 745762

source:
https://sierrabullets.com/content/load-data/rifle/338/338-winchester-magnum.pdf
https://sierrabullets.com/load-data/


Just my two cents... Cheers! Bob F.

@BFaucett
Let's see the data on a 300gn round nose instead of a nice pointy match king.
That would bring the big powder chewing, bitch slapping fire breather back down to earth.
The Whelen achieves 2,455 fps with the 310 using 12 grains less powder and less than 51,000 cup of pressure.
There fire young Watson I conclude the Whelen is a more efficient user of powder for the same results with bullets of the same design.
Bob

 

[Bob Nelson 35Whelen]

I agree, I also don't understand how they were able to get 2400fps out of a '06 case...

And did they?

I mean, I can't imagine chronographs being that plentiful back then, how did they actually determine that velocity?
Did they actually have access to a chronograph?

And if they did have access to a chronograph, once again, how did they manage to get that velocity safely?

I also agree with you on your point when you ask why aren't people doing it now with their .338-06 etc...
We have better powders now so has the only thing changed that chronographs are now so accessible?

I have been hunting, shooting and reloading now for a long time. And in that time I have heard many, many claims of what people have said about their 'pet' loads...
I'm in the camp now where unless it is shot in front of me - with my chronograph, I take it all with a grain of salt.
On more than one occasion my chronograph has hurt someone's feelings...

Elmer Keith is certainly a legend, but I'm sure like all of us he had his prejudices, his likes and his dislikes.
And like the rest of us I'm sure he wrote more favourably about the things he liked as opposed to the things he disliked.

Of course this is all just my 0.02...

Russ

@Badboymelvin
If'n y'all want chronoed proof check my post with the 310gn Woodleigh rnsp
Seeing is believing.
You have to try my Whelen on Sambar one day mate.
Pick the time and place and I will be there with it for you.
But I want it back after you try it.
It's an eye opener for those that haven't used one.
Bob