.30 Newton

Hi guys.

I wondered if anyone on this forum is using the Gibbs cartridges. I'm interested in both cases and reloading data for an article I am writing.

I'm also interested in the Mashburn cartridges and info on them.

Thanks
Allan

.30 Newton

Hi

We have been in contact regarding the 6.5 Gibbs.

I'm looking for reloading data, hunting experiences as well as cases.

.30 Newton

RR, thanks for sending the cases and for the link to the reloading data.

Vapodog

6.5 Gibbs

Here are all the loads for the 6.5 Gibbs listed on www.loaddata.com.

These are from Handloader #148

6.5 Gibbs / 6.5mm Gibbs

Warning! Notes: Federal 215 primers used in all loads. Powder and ambient temperature 70 to 85 degrees F. All velocities instrumental at 10 feet to middle of screens. All loads targeted at 200 yards except cast bullet load. Rifle: M98 26-inch Shilen barrel, one-in-9-inch twist. (Handloader Issue 148)
Be Alert: Publisher cannot be responsible for errors in published load data.

Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
100 Hornady Accurate AAC-3100 61.0 3,433
Remarks: brass: FC; under two inches at 200 yds

100 Hornady IMR IMR-7828 62.0 3,330
Remarks: brass: FC; under two inches at 200 yds

100 Hornady Alliant RL-22 62.0 3,469
Remarks: brass: FC; under two inches at 200 yds

100 Hornady IMR IMR-4350 56.0 3,324
Remarks: brass: FC; under two inches at 200 yds

120 Nosler Ball. Tip Accurate AAC-3100 58.0 3,264
Remarks: brass: WW; under two inches at 200 yds

120 Remington IMR IMR-4831 58.0 3,314
Remarks: brass: FC; under three inches at 200 yds

120 Speer Alliant RL-22 59.0 3,330
Remarks: brass: WW; under one inch at 200 yds

120 Sierra Hodgdon H-450 58.0 3,250
Remarks: brass: WW; under one inch at 200 yds

120 Nosler SB IMR IMR-7828 60.0 3,270
Remarks: brass: RP; under three inches at 200 yds

125 Nosler IMR IMR-7828 59.0 3,188
Remarks: brass: WW; under one inch at 200 yds

129 Hornady IMR IMR-4831 58.0 3,099
Remarks: brass: RP; under three inches at 200 yds

129 Hornady Alliant RL-19 57.0 3,097
Remarks: brass: RP; under three inches at 200 yds

140 Sierra GK IMR IMR-7828 58.0 3,039
Remarks: brass: WW; under two inches at 200 yds

140 Sierra GK Alliant RL-22 56.0 3,018
Remarks: brass: WW; under two inches at 200 yds

140 Sierra GK Hodgdon H-870 65.0 3,063
Remarks: brass: WW; under one inch at 200 yds

140 Sierra GK IMR IMR-4350 52.0 2,960
Remarks: brass: WW; under two inches at 200 yds

140 Sierra GK Accurate AAC-3100 55.0 3,034
Remarks: brass: WW; under two inches at 200 yds

140 Sierra GK IMR IMR-4831 55.0 3,041
Remarks: brass: WW; under one inch at 200 yds

140 Sierra GK Alliant RL-19 55.0 3,027
Remarks: brass: WW; under two inches at 200 yds

140 Sierra GK Hodgdon H-5010 68.0 3,088
Remarks: brass: WW; under one inch at 200 yds; vibrated then compressed

A little sidelight.....Rocky Gibbs always measured barrel length by extending a cleaning rod to the tip of a loaded chamber from the barrel's muzzle and measuring that length.....essentially he believed the barrel length should indicate the distance a bullet traveled while in the barrel.....Thus Mr Gibbs data was taken from barrels at least 3" longer than he said!!!!!

Also, Folks with Gibbs and Ackley chambers are known to blow more smoke than a politician!!!!...so take some of this as "pucky"....start at least seven grains low and work up!

.30 Newton

Thanks, very useful info. I see the 6.5 Gibbs gets some good velocities.

Any other Gibbs shooters out there?

Vapodog

Hey .30.....lets just ask one question.....If the Gibbs, Ackleys, and other such wildcats were so darn good.....why weren't they adopted by the majors like the .35 Whelen, .25-06, .22-250 were.....

Yes Nosler adopted the .280 AI.....but it was a marketing scam more than a real performance issue!

Here's the reality.....the standard 6.5-06 will get you anyplace the 6.5 Gibbs will or the AI verson will or anything else based on the .30-06 case.....it will feed nicely and be easy to reload

If you really want more look to the .264 Magnum.....and believe me....it's also not a lot more!

Mashburn?.....nice cartridge but still the question prevails.....if it was all that good and wasn't surrounded by bullpucky, the majors would have adopted it.....

Having said all that, let me now say this.....there isn't any 6.5 cartridge that I'm aware of that is significantly better than the old plain vanilla .270 Winchester!!!!!!!

.30 Newton

Well, my favourite rifle is chambered for the .30 Newton...An old cartridge and close to obsolete now. But with modern powders it is closer to the .300 Wby than the .300 Win Mag. And this with a lot less powder. A true classic and a very well designed case. And there is also the .35 Newton, a real powerhouse.

I guess I just like old cartridges and especially the wildcats.

As for the majors, they are mostly run by the bean counters. Standard stuff sells.

Funny you should mention the .270 Win. Back in the day it was said that .256 Newton was prefered rather than the .270 Win...

Vapodog

Obviously not by many as there's a lot more folks that shelled out money for a .270 than a .256 Newton....

That said.....it wouldn't be the first time that the better cartridge lost out. The .256 Newton was a great cartridge even for today!


I worked for one of the Majors.....and can disagree with this.....and in some cases they would be better off if they were. Many real bad decisions were made by folks in the majors out of nothing more than ego!


and there's something to be said for that....have a ball!

.30 Newton

All my rifles are chambered for cartridges made before 1920, so I guess I'm a fan of the old stuff

Still looking for Gibbs cases and reloading data.

gunnermhr

6.5-06 Standard?? Can't say that I see to many of those casings sitting on the shelf at Wal-Mart. Why a 6.5 Gibbs? Why not! No 6.5 cartridge is significantly better than a 270? look at the facts, how many records do you see a 270 making at a 1000 yards? how many times have you ever even see a 270 win anything at a 1000 yards? I can't say much for a 6.5 Gibbs winning much at a 1000 yards but a 6.5-284 sure has won it's share of matches, heck has even set a record or two. That sounds pretty significant to me. The 6.5 Gibbs is more than capable and accurate enough to win and set records and long range, you just don't see it much because competitive barrel life just isn't there.

I guess if we look at how much better any cartridge is than any other we could all just buy a .22, a 30-06, and a 373 H&H, with those chamberings you can kill anything from a squirrel to a Cape Buffalo. This is a Firearms Forum, things would get pretty dull if we didn't play around with many different calibers and loadings. So Vapodog, just grab your 30-30 go sit in a dark corner and let the big dogs discuss and learn and not believe a 270 will do everything a 6.5 Gibbs or 6.5-284 will do cause it's just not true. If a good buck is standing out there at 700 yards I'll be with Ridge Runner using the 6.5 Gibbs!