240 gibbs

[tooth doc]

Tooth,
I'm not sure where I saw it, but gun writer Wayne Van Zoll wrote an article some years ago with some load data for the 240 Gibbs. I'll see if I can find it if you're interested.

definitely interested. thanks for the offer!

 

[tooth doc]

definitely interested. thanks for the offer!

actually it looks like member Sable tireur sent that link. and a bunch of load data just previous to your post. thanks

 

[sable tireur]

.

 

[Gary in MD]

I find my memory fails again. LOL
The article from Wayne that I was referring to was on the 240 Hawk, a similar round to the Gibbs, made from 30-06 brass necked down with the shoulder angle changed. The article was in the 2003 Deer and Big Game rifles. He achieved some impressive velocities, I think his rifle had a 28" barrel done by Charlie Sisk.
Sorry for the confusion,
Gary

 

[tooth doc]

I find my memory fails again. LOL
The article from Wayne that I was referring to was on the 240 Hawk, a similar round to the Gibbs, made from 30-06 brass necked down with the shoulder angle changed. The article was in the 2003 Deer and Big Game rifles. He achieved some impressive velocities, I think his rifle had a 28" barrel done by Charlie Sisk.
Sorry for the confusion,
Gary
View attachment 453452
View attachment 453453
View attachment 453454

hey Gary. I am there with you! my time was was not wasted here as I learned something new! I thought I at least had a passing acquantance with most wildcats, nope, not this one. thanks and keep up the fight. never give in!

 

[just_jon]

All loads tested in a 26-inch pressure barrel. *Fire-forming load

LOADS FOR THE .240 GIBBS *

Bullet/Weight Powder Primer Case Starting Maximum
Load Load
(gr.) (gr)

55-gr. Nosier Winchester CCI-250 LC-63 54.0 60.0
BT 760

60-gr. Sierra Hodgdon Fed. LC-63 44.0 50.0
HP Varget 215

70-gr. Hornady Vihtavuori Rem. R - P 50.0 55.0
Spire Point N-550 9.5M

75-gr. Sierra IMR CCI-250 R - P 50.0 57.0
HP 4007SSC

85-gr. Barnes Accurate Win. LC-63 47.0 53.0
XBT 2700 LRM

87-gr. Hornady Hodgdon CCI-250 Various 50.0 57.0
Spire Pt.* H4831SC

100-gr. Nosler Alliant Fed. LC-63 53.0 57.0
Partition RI-19 215

105-gr. RamShot Win. LC-63 43.0 51.0
Barnes Hunter LRM

105-gr. Speer Vihtavuori Rem. LC-63 44.0 51.0
Spitzer SP N-550 9.5M

Bullet/Weight Velocity
(fps)

55-gr. Nosier 4.310
BT

60-gr. Sierra 3,900
HP

70-gr. Hornady 3,875
Spire Point

75-gr. Sierra 3,725
HP

85-gr. Barnes 3,500
XBT

87-gr. Hornady 3,400
Spire Pt.*

100-gr. Nosler 3,400
Partition

105-gr. 3,140
Barnes

105-gr. Speer 3,350
Spitzer SP

https://www.thefreelibrary.com/The+.240+Gibbs+vintage+sizzle:+this+legendary+6mm+wildcat+is+still...-a0220097564

View attachment 453385

Article by Wayne van Zwoll:

https://gunsmagazine.com/guns/rifles/hunting-with-gibbs/

Enjoy!

Velocity numbers are very close to what I'm getting in a 26" 6mm Rem. The 240 Gibbs data shows 150 fps faster with the 55 grains and equal for the 70 grainers.

 

[sable tireur]

The Hawk cartridges were somewhat successful due to the fact that they used the .30-06 cases which at the time everyone had access to.

Amazon product ASIN 0983159807
Rifleman the world over have seen articles about Hawk Cartridges, Z-Hat Custom Inc., and Fred Zeglin. Fred has gathered years of pressure testing and shooting into a manual format that makes it easy for any reloader to form and fire Hawk Cartridge. Many years have passed since Dave Scovill of Wolfe Publishing wrote about the 375 Hawk/Scovill and Fred Zeglin introduced the rest of the Hawk line of wildcats through his company Z-Hat Custom. These cartridges were featured in later Wayne van Zwoll articles in several publications. They have also appeared in books, including the popular "Cartridges of the World" by Frank Barnes. Hawk Cartridges have proven to have staying power; that is the best test of a successful wildcat cartridge. This collection of data includes some new material and new cartridges in the Hawk line-up. The intention is to provide information that time has shown to be valuable to shooters of Hawk Cartridges. There is no other resource for Hawk Cartridges that meets the needs of Wildcatters, Reloaders, and Shooters everywhere.

There are 11 Hawk wildcat improved cartridges in calibers: 6mm, .257, 6.5mm, .270, 7mm, .308, 8mm, .338, .358, .375, and even the .411- all based on an improved .30-06 case.



And don't forget another favorite of mine, the .240 Weatherby Magnum!

 

[tooth doc]

The Hawk cartridges were somewhat successful due to the fact that they used the .30-06 cases which at the time everyone had access to.

Amazon product ASIN 0983159807
Rifleman the world over have seen articles about Hawk Cartridges, Z-Hat Custom Inc., and Fred Zeglin. Fred has gathered years of pressure testing and shooting into a manual format that makes it easy for any reloader to form and fire Hawk Cartridge. Many years have passed since Dave Scovill of Wolfe Publishing wrote about the 375 Hawk/Scovill and Fred Zeglin introduced the rest of the Hawk line of wildcats through his company Z-Hat Custom. These cartridges were featured in later Wayne van Zwoll articles in several publications. They have also appeared in books, including the popular "Cartridges of the World" by Frank Barnes. Hawk Cartridges have proven to have staying power; that is the best test of a successful wildcat cartridge. This collection of data includes some new material and new cartridges in the Hawk line-up. The intention is to provide information that time has shown to be valuable to shooters of Hawk Cartridges. There is no other resource for Hawk Cartridges that meets the needs of Wildcatters, Reloaders, and Shooters everywhere.

There are 11 Hawk wildcat improved cartridges in calibers: 6mm, .257, 6.5mm, .270, 7mm, .308, 8mm, .338, .358, .375, and even the .411- all based on an improved .30-06 case.



And don't forget another. favorite of mine, the .240 Weatherby Magnum!

I just ordered the book! thanks

The Hawk cartridges were somewhat successful due to the fact that they used the .30-06 cases which at the time everyone had access to.

Amazon product ASIN 0983159807
Rifleman the world over have seen articles about Hawk Cartridges, Z-Hat Custom Inc., and Fred Zeglin. Fred has gathered years of pressure testing and shooting into a manual format that makes it easy for any reloader to form and fire Hawk Cartridge. Many years have passed since Dave Scovill of Wolfe Publishing wrote about the 375 Hawk/Scovill and Fred Zeglin introduced the rest of the Hawk line of wildcats through his company Z-Hat Custom. These cartridges were featured in later Wayne van Zwoll articles in several publications. They have also appeared in books, including the popular "Cartridges of the World" by Frank Barnes. Hawk Cartridges have proven to have staying power; that is the best test of a successful wildcat cartridge. This collection of data includes some new material and new cartridges in the Hawk line-up. The intention is to provide information that time has shown to be valuable to shooters of Hawk Cartridges. There is no other resource for Hawk Cartridges that meets the needs of Wildcatters, Reloaders, and Shooters everywhere.

There are 11 Hawk wildcat improved cartridges in calibers: 6mm, .257, 6.5mm, .270, 7mm, .308, 8mm, .338, .358, .375, and even the .411- all based on an improved .30-06 case.



And don't forget another favorite of mine, the .240 Weatherby Magnum!

just ordered the book