Home Forums Hunting & Shooting Custom Rifles & Wildcats Rechamber to Mashburn or 7-300WM

I actually have both the wby and mash and could do it for you.
Problem is im not at home right now.
The sad experience with wby accuracy I had would never allow me to recommend it to anyone.
And I dont care how its freebored.
I dont even care for the way wby the case looks.
Double radius BS is just that.BS.
Been there done that wont be repeating...ever.

To me the Mashburn is a Superior case design over the wby plus or minus a couple of grains notwithstanding...

dave

Really going over the top a bit are you? Maybe you have a 7mm WBY that doesn't shoot but I have one and it is old as hell in a Fibermark stock and it is SUBMOA with any factory Weatherby Ammo i put in it and the 150's BT come out at just under 3300 fps . It also can be quickly identified as a 7mm Weatherby by its case stamp isn't that novel? I don't have to buy a reamer,sizing die and extra cost reloading dies unless I were to build a custom 7mm wby on a 700 action.

Is some animal going to not die because of a 50fps difference in velocity?

I just can�t think of a practical reason to build a Mashburn over a 7 Weatherby.

�Because I want to� is a suitable reason for putting together a wildcat chambering when a factory cartridge that does the same thing is available, but it really doesn�t make sense from a pragmatic standpoint, due to the added cost of custom dies and what not.

I understand the "coolness and uniqueness " of a Mashburn. I just don't understand the weatherby bashing . BTW I never got anywhere near the speeds with multiple 7 Rem mags that I get with this Weatherby.

Will PM you

I dont think so.
This is after all, the Custom rifles and Wildcats board.
Why do bother to even come here?
I have not shot a factory loaded round of ammo in over 30 years.
Not about to start now
That the Wby has a BS double radius shoulder and has the name stamped on the case is about a meaning less a thing as I can think of.
The Fibermark I had would shoot 1.5 inch groups all day long and on Sunday.And in a case of this nature.A company only has one chance with me to make a good first impression.
They failed.
Epic fail.
If shooting factory ammo with a rifle where the rifliing starts part way down the barrel trips your trigger and the stock concentrates every oz. of recoil right down onto you is your thing than im happy for you.
Glad its working for ya.
I will continue to pass and have done pretty well doing so.

dave

Because I love to see that a cartridge that requires 12 trick moves to create does no better then a Factory cartridge that has been around for 60 years. Sounds like a canned response on your end and that is an epic fail. Why should I hand load when the rifle Ihave shoots sub moa every day and sunday?

Then why post on a Wildcat board.?
Sounds like a simple neck sizing shoulder bump is a bit of a technical challenge for you.
But thats ok.
If you ever need any help reloading.
Im here for you.
I have shot and reloaded for both the 7mm Wby and the 7mm Mashburn.
Im actually one of the few.
The 7mm Wby was developed by a insurance salesmen.
The 7mm Mashburn is a rifleman's cartridge developed by a true rifleman.
Since you dont handload I can understand your reluctance to accept that the Mashburn is superior to the wby in every way.
But thats ok.
I have 35 years reloading experience and im a 1000 yard bench rest shooter.
Im here for you.

dave

Done posting on this topic with those with closed minds. Sayonara

I've only worked with two wildcats in 40 + years of hand loading.


We really shouldn't turn this into a "Why wildcat?" thread but while we are at it...we might as well.

Best answer is that it's a logical extension of hand loading ammo.

Ever have a rifle that shot best with once fired brass? If so, you "wildcatted" a factory cartridge,by fitting a factory cartridge to your rifle to optimize its performance. It's unique to your rifle.

Cost of dies? Most wildcat dies cost no more than a set of Redding Comp dies,another little "trick move" to optimize your rifle's performance. As hand loaders we do it all the time. Besides, the wildcatter is paying for it out of pocket. I never let the cost of a set of dies keep me from a cartridge I really wanted,factory or otherwise.

Time forming cases? I'm stuffing hulls and shooting anyway...what difference does it make if I am forming brass or firing factory stuff or loading my formed wildcat cartridges? It's all the same thing.

The "hardest" part is forming some brass,which ain't hard. I could teach a [bleep] to form a Mashburn case. None of this is "hard",nor time consuming if you are a hard core shooter and hand loader anyway. .of course you may be the type who wants the factories to do all the voodoo/black magic stuff for you.

Another reason is that after awhile ,and exposure to nothing but factory cartridges, you are just stuffing hulls...the process gets boring if you have already worked with a lot of cartridges. Wildcatting puts a little zip back in the game.

There's also the intangible satisfaction part...ever catch a trout on a fly you tied? A Bass on a jig you poured? Ever build a raft as a kid, push it out on an unnamed pond and catch fish? Build your own bow and arrows from hardwood switches and kill squirrels with it?

.......or did you depend on some factory to do all this stuff for you?

If it weren't for wildcatters you would not have:

The entire lineup of Weatherby cartridges.

The RUM lineup.
280AI
7 Rem mag
243 Winchester
25/06
22-250
257 Roberts
260 Remington
7/08 Remington
338/06
6.5/284
6mm Remington
6.5 Creedmoor
6XC
7STW

I could go on, but the point is, none of these saw the first light of day from any factory...all were initially developed by wildcatters and later adopted by factories. So the factory load shooters can have something to play with and tell the wildcatters what wild-eyed loonies they are....

Bob, I understand the draw of the wildcat. I've made my one of my own, the 6mm Stuver (6mm-6.5x55 blown out with minimal body taper and a 40 degree shoulder). But I won't for a minute tell anyone that it makes sense, or that anyone should chamber it over a readily available round, or even a semi-common wildcat such as the 6mm Ackley. Because it doesn't do anything special.

A bunch of those rounds you mentioned actually filled some sort of niche, however small, and were not directly copying a round already available from the factory. If they were, it was because they offered some other sort of benefit, such as the ability to fit VLD type bullets nicely in a short action (6.5 Creedmoor).

I'm just not real sure what the 7mm Mashburn does better than the 7 Weatherby. I've read Hagel's stuff, and read on here for years about the Mashburn. It's seems to me that the reason the Mashburn is still being chambered is that it's proponents want a wildcat for the sake of owning a wildcat, and will look for any small advantage (real or imagined) and run with it. Taking something that's relatively simple and making it complicated. So is the wildcatter/rifle looney way!

I have nothing against the Mashburn. I have nothing against wildcats. I just think we should all be realistic with ourselves and realize that the vast majority of the differences we are seeing between these rounds exists solely between our ears.

Then why post on a Wildcat board.?
Sounds like a simple neck sizing shoulder bump is a bit of a technical challenge for you.

Yep sounds like too much work and the case stamp doesn't match ask me why
Never have found that to be a problem and I think we are back to the technical challenge part for you.I did offer my help.
But thats ok.
If you ever need any help reloading.
see comment below
I have,didnt think much of it.
Im here for you.
I have shot and reloaded for both the 7mm Wby and the 7mm Mashburn.
Do you need special recognition for that:
No not at all.When I go into a chat room on a subject I know very little about ,like you in this instance.I generally keep my pie hole shut and try to learn something.Unlike you.
Im actually one of the few.
WOW aren't you special
Well thank you very much.All complements accepted.
The 7mm Wby was developed by a insurance salesmen.
So what do you do for a living?
Im a quality auditor for one of the largest corporations in the world.
The 7mm Mashburn is a rifleman's cartridge developed by a true rifleman.
BFD
Actually it is a BFD.If you had even a basic understanding of case design you would be able to understand that.But you dont.
Since you dont handload I can understand your reluctance to accept that the Mashburn is superior to the wby in every way.
DOn't need to hand load my 7mm WBY other rounds i do because they get shot more
This is a wildcat chat board.We handload here.
But thats ok.
I have 35 years reloading experience and im a 1000 yard bench rest shooter.
Thats fantastic
Well thank you very much.All complements accepted.
Im here for you.
You come across as a total pompous ass. There is zero chance we would ever be civil with each other.
Too bad thats your loss.And even now if you asked for advise or help.Im here for you.

Done posting on this topic with those with closed minds. Sayonara

Sayonara dude.
Dont go away mad.
Just go away.
If the panties are a bit to tight just re-ajust and consider it a learning experience

dave

its like groundhog day.

U R welcome.
Sounds like a plan.
Im thinking a harder bullet would be a good thing on an elk.
The Bergers seem to work fine on deer sized game.
dave

SS M70?

pg you are right...there is a huge amount of overlap ballistically with or without the wildcat. I for one could never understand the 280AI niche.

But when I built the Mashburn I wasn't trying to fill any gap;I was itching to build something and had already been through 7 Rem Mags numbering in the teens,the 7mm Dakota,the 7mm STW, several 280's etc etc.

The Weatherby was not going to do it...I don't like the rifles, the freebore,nor the Norma brass.I had just come off bad brass experiences with Dakota stuff made by Norma,which also made me want to stay away from things like the LRM and other makers of boutique cartridges and brass)

Besides, I have built a couple of 7 Rem Mags based on long throats on H&H magazines that, literally, used 7mm Weatherby data for a slight uptick in velocities.So there was no appeal there, and still isn't.

The Mashburn was the only 7mm magnum that appealed to me at all. I have all the parts sitting over here in the form of a M70 Classic 7 RM,Borden RR ,and Brux tube.....I am on the cusp of doing a second one.


But fill a gap? Nope There are no gaps anymore

Besides I have always been a Page/Hagel fan. I was curious if the old wildcat performed up to what they said,wanted to find out for myself rather than speculate, That's my nature. It does.

Quality Auditor ...LOL that explains it all.

Yes it does, we have to get it right.
Every time.
I thought you were done posting on this topic?
Guess not.

dave

Bob,

Why no like for the "freebore?" What's the negatives?

One of the main components of achieving VERY accurate rifles is to get the bullet started straight in the barrel. A lot depends on the chamber, and if the chamber enters the bore perfectly straight. Excessive Freebore allows and encourages the bullet to get started crooked in the bore. How much excessive freebore degrades accuracy is a matter of trial and error.

Hint: for the guys that want freebore in their custom rifles, design the reamer with 0.0003-0.0005 over bullet dia. throat, which will go a long ways in keeping the bullet aligned with the bore.