dumb question 300win in a 300wby?

C

Cujo03

Member
Rating - 0%
0   0   0
Location
Southern Alberta
Know a guy that claims he shoots 300 win mag shell in his wby mag gun. Its goota be dangerous but i'm not sure. He says the cases are screwed after 1 firing though. Anyone else hear this?
 
Don't be anywhere near that idiot when he shoots. Tell him he's a fool, and not to do it. If he still does it, well then it's his face that he's going to blow off, not yours.
 
It can be done because the 300 Win case is shorter than the 300 Wby. The belt is the same on both cases, so that controls the headspace. That is how the 300 Wby used to be made before there was factory ammo, but using 300 H&H brass.

Wildcatters do this kind of stuff all the time. :eek: :D

Firing the 300 Win in the Wby will just fireform the 300 Win out to fit the 300 Wby chamber. The fired case will be too short for 300 Wby, and certainly look goofy, with only a very short, if any, neck above the radiused shoulder.

Ted
 
Last edited:
Ummm, got a question on the same line of thought then......
Can you fireform 250 Savage brass from 22-250 rounds & 280 Rem brass from 270 Win rounds & is it really dangerous?
 
kombi1976 said:
Ummm, got a question on the same line of thought then......
Can you fireform 250 Savage brass from 22-250 rounds & 280 Rem brass from 270 Win rounds & is it really dangerous?
Click to expand...


Wouldn't you just neck up new brass?
 
kombi1976 said:
Ummm, got a question on the same line of thought then......
Can you fireform 250 Savage brass from 22-250 rounds & 280 Rem brass from 270 Win rounds & is it really dangerous?
Click to expand...

Those two cartridges do not have belts to control headspace, so it would be dangerous to do so. :eek:

However you would could neck them up to a larger caliber first and then resize them in your full length sizing die until the bolt or lever just barely closes on the case (called a crush fit), and you would have a safe firing situation.:cool:

I have done exactly that to make 250 Savage brass from 22-250. Necked it up by running the brass over the expander in my 270 dies and then resized until the lever would just barely close on the resized case.

You could neck 270 brass up to 30 cal and then resize until it just barely closed in the 280 chamber to accomplish the same thing.

As Amphibious has just said, it is a lot simpler to just use new brass, but if you had scads of brass you weren't using you could ceratinly make those two cartridges this way.

Ted
 
Last edited:
Why not? said:
As Amphibious has just said, it is a lot simpler to just use new brass, but if you had scads of brass you weren't using you could ceratinly make those two cartridges this way.

Ted
Click to expand...
Just askin, I guess.:redface:
You hear some interesting storiea round the traps though.:confused:
 
Woudn't firing the .300 Win in the Wby chamber cause rapid throat erosion from gas blow-by?
 
Kombi, Ted gave a good discription of fireforming non belted cases. This is a standard procedure for wildcats but don't attempt it unless you understand exactly whats going on. If proper headspace is not obtained on the first fireing it can lead to very bad stuff!
 
Can a WM be fired in a WBY chamber? Yes - Once!!!!!

Unless the moons align on that special day told from ages gone by, the likely hood of the WM bullet lining up with the bore is not all that good.

So you have an unsupported front 1/3 of the case and the potential for the bullet to be aiming somewhere other then down the bore. All this pushed around by a very happy 65000psi of 'exploding' gunpowder.

Ummmmm, at least in Russian Roulette you have a 1 in 6 chance.

See if your buddy is willing to have you tape the event for Funniest Vids or his wake.

Jerry

PS, if you fireformed the WM case WITHOUT a bullet at low pressures, the shoulder/neck would blow out to fill the chamber. Probably now a 42cal case with a very short curvy neck. That assumes the front end doesn't leave the rear part of the case.
 
Last edited:
mysticplayer said:
Can a WM be fired in a WBY chamber? Yes - Once!!!!!

Unless the moons align on that special day told from ages gone by, the likely hood of the WM bullet lining up with the bore is not all that good.

So you have an unsupported front 1/3 of the case and the potential for the bullet to be aiming somewhere other then down the bore.
Click to expand...

Not quite the case ;) you have described here, Jerry.

Although it is short, a loaded 300 Win mag in a 300 Wby chamber has the case neck firmly positioned in the chamber neck. Consequently the bullet is properly aligned, even if the moons may not be. :p

Ted
 
FWIW, I have done this numerous times. It works well enough that one could use it in a pinch but I would stop well short of recommending the practice. Regards, Bill.
 
Yikes,
That reminds me of a fellow I knew who inadvertantly got a .303 british mixxed with his .300 win mag ammo and fired it out his Parker Hale .:eek: :eek: How he did not realize it when he loaded I'll never know. Anyways he ended up with a good blast of gas in the face, lucky he was wearing glasses. The bolt then had to be openned with a mallet and out came a case that looked more like a .45-70 than a .303 with 2 splits near the head. I have the case still and use it for a teaching aid in CORE courses (what not to do). Fortunately the rifle survived. I hate to guess what kind of pressures may have been generated stuff a .311 pill down a .308 hole!!
 
mysticplayer said:
I stand corrected but talk about alot of unsupported brass.

Jerry
Click to expand...

Yah, about like fireforming 25-35 to 25-35 Ackely, which sometimes results in split necks, but is not dangerous.

Please understand, I am not saying this is something I would normally do, however if it was all that was available, and I really needed to use it, I would certainly not be fearful to do so. Actually knew a guy who ended up shooting 308 Norma in his 300 Win one fall because he ended up with the wrong ammo. Similar situation, but it worked.

Actually, Jerry, I think some of your wildcats have quite a bit of unsupported brass before forming don't they?

Ted
 
Last edited:
You must log in or register to reply here.
Back
Top Bottom