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#6646734 - 07/02/12 New 7mm Wildcat
TMR Offline
Campfire Regular

Registered: 11/18/06
Posts: 280
Loc: Western Washington
Thanks to Dober and Bob, I played with the 7 Mashburn a little and it helped develop my new wildcat 7mm. There were a couple things I didn't like about a straight 7/300WM, mainly the short neck. A RUM case gave to much case capacity and wouldn't work well with "extreme" powders, 375 Ruger case was a pain to neck and form.

I found that there was a fairly common relationship between neck length, bullet diameter and shoulder angle on the recent "accuracy" cartridges. I new what the Mashburn and 7 Rem Mag would run for velocity when I changed the throat angle and length for the VLD bullets. So I applied all this info to my design based on the readily available 300WM case. The design gives a few grains capacity over the Mashburn, and like the Mashburn, is very forgiving to load for. The result was, a 180 Berger at 3200fps in a 27" barrel. So far the test batch of brass has been loaded 9 times and the primer pockets are still tight. Now I can put the "real" rifle together with our new stock design and continue "testing" during hunting season!

Do I think its better than a Mashburn? Still torn on that one. The Mashburn has history, nostalgia, and panache. This is just another option that gives a little boost. I will continue to build both!

Here are some pics of the 7mm Rogue on the left vs a 7 Rem Mag on the right.

Accuracy


Test Rifle

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#6646750 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
ironeagle_84 Offline
Campfire 'Bwana

Registered: 08/31/08
Posts: 10443
Loc: grants pass, oregon
i like it! nice looking set up too.
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30-06 till i die, the greatest round ever!

I carry a gun because a cop is too heavy!

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#6646791 - 07/02/12 Re: New 7mm Wildcat [Re: ironeagle_84]
hillbillybear Online   content
Campfire Kahuna

Registered: 12/31/02
Posts: 23848
Loc: Western NC
Its a 7mm Mashburn Improved. grin


Nice looking cartridge and rifle. cool
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Member: Clan of the Turdlike People.

Courage is Fear that has said its Prayers

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#6646849 - 07/02/12 Re: New 7mm Wildcat [Re: hillbillybear]
TMR Offline
Campfire Regular

Registered: 11/18/06
Posts: 280
Loc: Western Washington
Originally Posted By: hillbillybear
Its a 7mm Mashburn Improved. grin


Nice looking cartridge and rifle. cool



Slightly different shoulder angle, neck length and body taper. So I guess it could be a Mashburn Improved.

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#6646862 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
Tanner Offline
Campfire 'Bwana

Registered: 03/01/11
Posts: 10373
Loc: High Country Colorado
I want one!

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#6646876 - 07/02/12 Re: New 7mm Wildcat [Re: Tanner]
Heeler Offline
Campfire Regular

Registered: 02/03/09
Posts: 728
Loc: Cass Co, MO
That looks really sweet!

Have you by chance tried it with any other bullets or set it up to be an "exclusive" for VLDs?
_________________________
He went over yonder way

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#6646902 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
roundoak Offline
Campfire Tracker

Registered: 12/25/09
Posts: 5895
Loc: Badger State
I admire your ingenuity.
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Your Welcome At My Fire Anytime




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#6646914 - 07/02/12 Re: New 7mm Wildcat [Re: Heeler]
Danny1788 Offline
Campfire Regular

Registered: 03/29/11
Posts: 366
Loc: Central Coast, CA
Travis whats the stock look like? any pics of them?

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#6646924 - 07/02/12 Re: New 7mm Wildcat [Re: roundoak]
TMR Offline
Campfire Regular

Registered: 11/18/06
Posts: 280
Loc: Western Washington
I haven't run it with any lighter bullets yet. I will now that I know it works well with the 180's, I'll run some 160's through it. I would project around 3300 with the 160 class bullets.

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#6646927 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
TMR Offline
Campfire Regular

Registered: 11/18/06
Posts: 280
Loc: Western Washington
Still waiting on the new stock...it is a joint project with Manner's. Should have it in the next week or so hopefully

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#6646941 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
Danny1788 Offline
Campfire Regular

Registered: 03/29/11
Posts: 366
Loc: Central Coast, CA
would it be along the same lines as the grey bull?

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#6646952 - 07/02/12 Re: New 7mm Wildcat [Re: Danny1788]
Ebby Online   content
Campfire Ranger

Registered: 02/02/07
Posts: 2416
Loc: Middle TN
What are you going to sell me the "Test Rifle" for? Really sweet. I'd like one. Should be a long range hammer at those speeds.

Lee

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#6646967 - 07/02/12 Re: New 7mm Wildcat [Re: Ebby]
TMR Offline
Campfire Regular

Registered: 11/18/06
Posts: 280
Loc: Western Washington
The stock will be a vertical grip with a narrower forend, similar to the Greybull or A3, but with some ergonomic tweeks. Can't really take the credit for it. Tom asked for some suggestions and then is running with it.


Ebby, the test rifle has been with me for along time and has worn out 15-20 barrels in its lifetime. Pretty sure she will never leave! Might just change shapes and configurations a little.


Edited by TMR (07/02/12)

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#6646991 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
Ebby Online   content
Campfire Ranger

Registered: 02/02/07
Posts: 2416
Loc: Middle TN
Ha. Yeah I figured. Playing with you a little. Nice looking round. How does it compare with the STW? Obviously 300 WM parent case vs 8mm mag, but just curious about other differences.

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#6647023 - 07/02/12 Re: New 7mm Wildcat [Re: Ebby]
TMR Offline
Campfire Regular

Registered: 11/18/06
Posts: 280
Loc: Western Washington
I have burned up 8-9 STW barrels, and I have a bunch of experience with them. This one and the Mashburn do virtually the same thing with less powder. This one runs within 30fps of my STW with the same length barrel with 8gr less powder.

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#6647045 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
Danny1788 Offline
Campfire Regular

Registered: 03/29/11
Posts: 366
Loc: Central Coast, CA
Thats impressive to say the least Travis! The STW you built me is amazing wish i would have waited a little longer for you to design this one, what powder are you using in the ROGUE? But I do have to ask this, if you had a reamer with the same throat angle and everything setup for the vlds in a 7mm STW do you think the ROGUE would still compete with it or would the stw move up to RUM speeds?


Edited by Danny1788 (07/03/12)

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#6647065 - 07/02/12 Re: New 7mm Wildcat [Re: Danny1788]
TMR Offline
Campfire Regular

Registered: 11/18/06
Posts: 280
Loc: Western Washington
Using H1000 in the Rogue. It seems to work better than Retumbo and is more consistent.

My STW reamer has the same throat angle, but not length. It would speed up a little with a longer throat, but takes a much slower powder to do so. From what I found, until one goes to a 30" barrel, the 7RUM and the STW are about equal. The STW is a great round, I was just looking for something a little more efficient is all.

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#6647087 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
Danny1788 Offline
Campfire Regular

Registered: 03/29/11
Posts: 366
Loc: Central Coast, CA
I understand what your trying to do and fully agree with you 7mm ROGUE is shorter COAL than the STW and about equals its performance thats a neat round travis great work. Can't wait to see some pics of the new stock when you get some in.


Edited by Danny1788 (07/03/12)

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#6647221 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
Mark R Dobrenski Offline
Campfire Oracle

Registered: 04/19/01
Posts: 28277
Loc: Bozeman, Montana
If you have a minute put up a pic of the Rogue the Mash and the RM.

And, thx for the update.

Good work

Dober
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"True respect starts with the way you treat others, and it is earned over a lifetime of demonstrating kindness, honor and dignity"....Tony Dungy

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#6647363 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
Tanner Offline
Campfire 'Bwana

Registered: 03/01/11
Posts: 10373
Loc: High Country Colorado
TMR, are you single feeding these? If not, what's your COAL look like, and what Bottom metal are you using?

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#6647390 - 07/02/12 Re: New 7mm Wildcat [Re: Tanner]
TMR Offline
Campfire Regular

Registered: 11/18/06
Posts: 280
Loc: Western Washington
Standard BDL bottom metal. OAL is 3.65-3.7". Will just fit into a standard Remington mag box.

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#6647399 - 07/02/12 Re: New 7mm Wildcat [Re: TMR]
Tanner Offline
Campfire 'Bwana

Registered: 03/01/11
Posts: 10373
Loc: High Country Colorado
Oh, right on! That's pretty dang cool.

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#6647590 - 07/02/12 Re: New 7mm Wildcat [Re: Tanner]
Grand Online   content
Campfire Ranger

Registered: 11/14/05
Posts: 2475
Loc: Central Cal.
I get 6.1 mils of elevation at 1000 yards asl using the Litz model. Impressive.


Edited by Grand (07/02/12)
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Alcohol, Tobacco & Firearms: Should be a convenience store, not a government agency!

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#6647600 - 07/02/12 Re: New 7mm Wildcat [Re: Grand]
DayPacker Offline
Campfire Ranger

Registered: 01/16/09
Posts: 1905
Loc: Front Range, Co
Want to sell it?
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Time spent hunting is not deducted from one's lifetime.


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