Tell me more about the 30 GIBBS?????

cycbb486

cycbb486

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anybody have one?????

Here about all kinds of DIFFERENT calibers but not a lot about the Gibb's cartridges....

The little I know a buddy had one and said it was a hard hitter. I am very fond of the 30-06, (info passed down from my dad as he always felt it was the cream of hunting cartridges for North American game)

Something tells me it would be neat to have one done up on my Rem 700 from 65'. Currently is in .270.....

Tell me more, tell me more........LOL

Calvin
 
Gibbs blew out the 06 case with as little taper as possible and still extract, 40 degree I think and the neck only 1/4 inch long... It's the most you can get out of a 30-06 case. Period. And it is a wildcat, you need to make ammo for it, not just fire form using an 06 case.

I would much prefer a .308 Norma Mag... or an Ackley 30-06.
 
I had a 30 Gibbs for quite some time. I could get about 2950 with a 180 grain bullet, not a huge gain over the standard 30-06.
The cases are a bit of a pain to form because the shoulder is so far forward of the standard '06
You have to make a "false" shoulder by necking up to well over 30 cal first, then forming the false shoulder to headspace on.
Theses cases sometimes are not the greatest to feed from a magazine either. I agree with Guntech's observation.
Regards, Dave.
 
I've always been interested in one as well, just haven't pursued it yet. From what I've read it will pretty much gives 300wsm/ 308 Norma/ 300 H&H performance but one main advantage is you can fit 5 or 6 in an internal mag as opposed to 3 WSM's or 4 belted mags. Plus having something a little different sounds like fun to me. I'm probably crazy though because I already have a 300 H&H and a 308 Norma haha
 
I don't have 30 Gibbs but do have a 240 and 270 Gibbs I really like them. The biggest problem is forming brass. You will have start by necking up to 35 Whelan then necking down to in a 30 Gibbs die till the bolt closes, loading then firing to fire form. You should anneal before you start, and when your done fire forming. Quality Cartridge does make brass for all the Gibbs cartridges so you may be able to buy from them and get either Irunguns or Prophet River to import it for you.
 
I built a couple and both guys were very happy after having them re-chambered to 308 Norma. The only possible reason for the Gibbs was the availability of cheap brass at the time that Gibbs developed it.
 
Eagleye said:
I had a 30 Gibbs for quite some time. I could get about 2950 with a 180 grain bullet, not a huge gain over the standard 30-06.
The cases are a bit of a pain to form because the shoulder is so far forward of the standard '06
You have to make a "false" shoulder by necking up to well over 30 cal first, then forming the false shoulder to headspace on.
Theses cases sometimes are not the greatest to feed from a magazine either. I agree with Guntech's observation.
Regards, Dave.
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My moose medicine is a 340 Gibbs. Sometimes I wish I had just rebarrelled and chambered to 338-06. All that has been said by Guntech and Eagleye has merit. Good advice. The Gibbs cases are a PITA to fire form. There are lots of other chamberings that will do just as well. Like 308Norma and 300H+H if you like expensive brass/ammo.
 
The cartridge was developed a long time ago, and some quite exaggerated claims were made. Now that many have a chronograph to check the claims, the truth has come to light. Velocity gain over the standard 06 is minimal - 50-100 fps.

I think I would go to a 280 Remington over the 30-06. Not really much difference over a 270 though. Perhaps a bit better bullet selection.
 
I am just kicking tires.....

To me the brass forming would be no worse than 220 Russian to PPC.

Neck up, size down creating false shoulder, load and fire.......

I want to stay away from a belted case. What I have heard the 30-06AI is really not much gain as compared to a 280AI. Could do 338-06 but have lots of 30 cal bullets that I could use up.

May as well stick with the trusty 06. There are a few guys in the US shooting them and doing well in the competition circles. Names slip by me at this time. Will do some searching and contact them to see which way to go reamer wise......

Thanks anyways......
 
cycbb486 said:
May as well stick with the trusty 06. There are a few guys in the US shooting them and doing well in the competition circles. Names slip by me at this time. Will do some searching and contact them to see which way to go reamer wise......
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You may be thinking of German Salazar. He used to have a public blog which was quite interesting to read. It is now by invitation only. He did some good work on primer testing.
 
I guess there is no getting a hold of Salazar. From what I have found out he has stopped shooting and his articles are nowhere to be had. Unless someone saved them at some point in time.......
 
David Henry said:
Just to clear up a point, the Gibbs shoulder is 35 degrees and the Ackley is 40 degrees. One of the nice things about either of the improved chambers is the need to trim brass is mostly eliminated. D.H.
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Hello David!

Do you have a reamer for this cartridge?
Just in case some folks are interested.

R.
 
I am not a forum sponser and don't want this to be taken as an attempt to solicit business, but to answer your question I have tooling to cut all the Gibbs chambers. That being said the Gibbs line of wildcats are not for everyone especially the novice reloader as brass preparation is quite involved to do it safely. And quite often encountered with these chambers is that their owners tend to overlook pressure sign with a lustful eye on the chronograph results. As Leeper pointed out the 30 Gibbs is over shadowed by the 308 Norma which in turn is over shadowed by the 300 Win and it is trumped by the 300 Weatherby and the 300 RUM pretty much settles the argument. So we have to accept that there is only so much velocity that can be wrung out of the 30-06 parent case, and the 30 Gibbs has accomplished that. D.H.
 
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