If a guy wanted to build wildcat 7mm06 type with:
.284"neck length,
30deg.shoulder,
.450" shoulder dia.

is it as easy as necking down some 06 brass to the correct length and fire forming in the new chamber,
or do we need more of a ghost shoulder?

Wouldn't it be easier to simply by a 280 Remington? The only possible difference might be the shoulder angle. I'm not sure if the 280 is 30 degree or not.

I have a 280PDK 280 rem case. .28" neck, .458" 40 deg shoulder. If you draw up that case. Since you are reducing the shoulder dia from a 280AI and going with only a 30 deg I'm not sure you will gain anything over an AI. Use a 280 case and build a gibbs. Neck would be close to .28 shoulder 35 and .453. If you want give me your email and I'll send you a copy of my 280PDK and the Gibbs.

Your original question. Just neck down the 06 enough to form a ghost shoulder and fireforem. You will need something to headspace on.

Here is a rough sketch of the 280 cases. The black is a 280Rem, the red your proposal, the blue is a 280AI and the green is the Gibbs. I don't understand the design to use a 06 case and end up with a shorter neck and less capacity than the 280AI.

Ramrod340, Image is very helpful.
it not all about just extra capacity for me, I like just enough/sufficient neck lengths(1 cal.or fraction more) and I dont like shoulders greater than 30deg.

If I were to use 338-06 brass ,that should give me enough difference to form a large enough ghost shoulder for my 7mm or even maybe sufficient for a.30cal version do you think?

try this

http://www.z-hat.com/Hawk%20Forming.htm

I think these have a 28 deg shoulder. He chambers up one for me and I asked for the standard 280 neck, so I simply fireform 280 brass and skip the shoulder step.

Which is right close to the 280 RCBS, no?

quote:

it not all about just extra capacity for me, I like just enough/sufficient neck lengths(1 cal.or fraction more) and I dont like shoulders greater than 30deg

Can't say I can understand your logic. Everyone is welcome to spend their time and $$ to build anything they want. To me what you have is a 280RCBS (30 deg shoulder) built on an 06 case to shorten the neck.
http://www.clymertool.com/cgi-bin/reamer.cgi. Look under Ackley improved rimless.
Use a 280RCBS reamer. Dies are available simply use 06 brass run it in the sizing die and fireform.

If you build it, 30-06 brass will give enough shoulder to headspace on. You could get 280 brass and run the 30-06 expander ball through it once, then back down to 280 and heat treat the neck to get the proper cal stamp on the brass. Just a thought.

Thanks for all the help. Sometimes we want to do things just for alittle personal satisfaction,that does not make full economic sense,or reasoning sense to anyone else.or at least explore the idea.
Funny enough, one thing can lead to another,while looking at the Zhat site, i came across the 358 hawk. it really apeals to me,and thats strange cause im generally not a whelen fan.

quote:

Originally posted by brianbo:
Wouldn't it be easier to simply by a 280 Remington? The only possible difference might be the shoulder angle. I'm not sure if the 280 is 30 degree or not.

Your right and the 30-06 head to shoulder is 1.948 vs. the 280's 1.999 so it couldn't be chambered in a 30-06. So the 06 would actually have less capacity unless you really blow it out.

quote:

while looking at the Zhat site, i came across the 358 hawk

If you like the hawk the 350 howell would be an option as well.
http://www.hunting-rifles.com/casecomp.html

358 Hawk, Good choice! You can use '06 brass found anywhere. Not so for the Howell cartridge.

I remember seeing a 338/06 in Fred's capable hands being turned into a 338 Hawk many years ago.

quote:

358 Hawk, Good choice! You can use '06 brass found anywhere. Not so for the Howell cartridge

There is no reason in the world that you couldn't use 06 or Whelen brass to make Howell. Sure the neck would be .1" shorter but so what(people suggest all the time to use 338 brass to make 358 norma that leave necks .07" shorter yep never have to trim) . In a normal 3.4" (howell COL is posted as 3.335") magazine you could seat a 225 or 250 and still have a minimum of .325" of bullet in the case. Even using 06 brass the Howell would give you more net capacity than the Hawk.

This drawing is for a 338. a 358 250 would be almost the same a 225 .358 bullet base would move forward. The Howell neck goes to the same point as a 66 Sako. But, gives you no more net capacity than the 06 or 280 brass. Yes the 30-06 and 30-06AI should be 338-06.