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Old 02-28-2008, 02:16 AM
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25 Gibbs

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I had recently made a 25 Gibbs Rifle and a 6,5 Gibbs. It is outstanding the performance but I have some problems with the brass I am using.
I use LC 69 30-06 brass to fire form both

I noted that that primers loose with 2 reloads . But if I use comercial brass , it doesn,t happens.

My reloads are

Nosler Part. 100 gs - IMR 4350 59 gs Federal 215 primers for the 25

Hornady 129 gs - IMR 4350 56 gs Federal 215 primers for the 6,5

Velocity are 3480 fps and 3220 fps

Presicion is excelent

Anyone have done ome experience with that excelents calibers

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Old 02-28-2008, 03:49 AM
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Raul I don't, Those don't sound like really hot loads in either case though. You may just have some soft brass and it's stretching the primer pockets. How do the primers look after firing? Really flat, do the they fall out. Are you experiencing any hard bolt lift after firing? All those symptoms are signs of high pressure. If that isn't happening then it's time to look for some other brass.
Bob from Idaho
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Old 02-28-2008, 03:59 AM
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Obviously primers are flat , because it is a warm load , but there isn't the problem I think .
In my experience LC brass are tougher than comercial and perhaps what it is happening is that the brass is harder than comercial and have less elasticity , so primers pockets strech .

For me it is difficult to obtain comercial 25-06 brass by here ,, but I think that it will be the solution .

Despite of this both are great calibers .
I have 18 big game rifles and hunted with all of them.
past month I had shot an axis deer of about 200 pounds in the back , with my 25 gibbs and nosler partition 100 gs at 3470 fps.
The buck fell down like being shot by a rocket !!

I had been reloading all calibers and record data for 25 years , and belive me that Gibbs calibers are really excellents.
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Old 02-28-2008, 04:32 AM
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It sure sounds like a couple of great cartridges. I live out here in Idaho near the spine of the Rocky mountains and we hunt a variety of big game including elk, mule deer, moose, mountain goat, mountain sheep, whitetail deer, black bear and others.

I use both an old 8mm Remington Magnum and a 280 Remington for those duties. Most of my year round hunting is varmint hunting, either coyotes or ground squirrels and rock chucks (big marmots) as that kind of stuff can be hunted year round.

Two years ago I killed an nice four point (on one side) buck that dressed out near 250 pounds (with entrails removed).

You don't much hear about The Gibbs calibers here in the US anymore, but your right they are great cartridges. I use a 243 for some of the varmint hunting I do, but recently bought one of the CZ 527 Varmint model rifles in 204 Ruger and am really impressed with both the accuracy and killing ability on coyote sized animals and smaller with these new 20 caliber cartridges.

I've been reloading now for a little over 45 years and really enjoy that aspect of shooting. Components are so easy to get here that it's hard for most of to understand how much harder and more expensive reloading is in other country's.

I load for several handguns including the 38 special/357 mag, 40 S&W, 41 Mag, 44 mag, 45 ACP and the 45 Colt. On the rifle side I load for the 204 Ruger, 243 Win, 280 Remington, 7mm Rem mag, 7mm STW, 30-06, 308, 300 Rem Ultra-mag and my old 8mm Remington Magnum.

I've been casting bullets better than 40 years for the handguns and for muzzle loaders and ran a small gunsmith business for better than 27 years. I sure love this gun and shooting forum and being able to talk to hunters and sportsman such as yourself from all over the world.

These pix will give you an Idea of where I live out here in Idaho. I live at the bottom of this canyon.

I often hunt the edges of this lake which is about six miles from my house. Here I can hunt deer, elk, bear, turkey, cougar and coyotes.

This is the Camas Prairie where I do most of my coyote calling and some deer hunting. We have both mule deer and whitetail deer here.

Sure nice talking to you Raul.
Bob from Idaho
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Old 02-28-2008, 04:57 AM
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really tou live in an oustanding place to do what we like to do !!!!!!!!

As you I am an all year hunter but in Uruguay there is less big game animals as in the States

here we hunt Fallow and Axis deer , Wild boars ,( very big ) , foxes and small animals , and some varmint during all year all.

I hd been reloading as I told you for more than 25 years and had being reloading for

5,7 Johnson,5,6 x 57; 6,5-06; 6,5 gibbs; 6,5 68 ; 6 mm Rem; 7 mm STW ; 7,65 mauser; 7mm Rem mg; 7 Wby mag; 8 x68 S; 9,3 x 62; 9,3 x 72; 22-250 ; 22 Hornet; 25-06; 25 gibbs; 30-06 ; 30-30; 32 winch spl; 35 whelen; 38-55 ; 44-40; 45-70; 218 Bee; 220 Swift; 222 Rem; 223 Rem; 243Win; 250 Savage; 257 Roberts; 257 WBY; 270 Win; 280 REm; 280 Ackley; 300 Wby; 300 Winch; 308 Norma mag; 308 Win; 338 Win mag; 351 Win self load; 358 Winch; 375-338 Mag; 375 H&H; 375 Whelen; 458 Winch; 9 Luger; 10mm Auto; 38 spl; 38 Super; 40 S&W; 44 Rem mag; 45 ACP; 45 Colt; 357 Rem mag

For all taht calibers I have info of Loads , bullets , temperature , etc and all the targets from each load .

I have it in the original papers and in my computer as well

As you see my hobby is reload and hunting.

Pleas to talk with you and we are in contact
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Old 02-28-2008, 05:22 AM
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I built a 308 Norma mag in 1963 or about there and shot it for years here in Idaho. Ended up giving it to my niece's new husband for a wedding gift. He tought engineering at the University of Idaho for years and used that old 308 Norma Mag for deer and elk and finally retired and moved to Alaska where he's still using it for moose and bear. What a great cartridge.

It sounds like you really love to shoot and reload. The 8 by 68 is very simular to my 8mm Rem mag. You've found the right place to talk about reloading, hunting and shooting here. All of us on this forum like to do that and enjoy discussing what we do and shoot. Again welcome to the forum Raul.

Here's a winter shot of the canyon where I live.

Bob from Idaho
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Old 03-01-2008, 07:42 AM
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25 Gibbs

I have been doing the Gibbs thing for about two decades now and can say they are super. A problem with the primer pockets caused me to just stop shooting them until someone tipped me off about ten years ago. RWS 06 brass ended my primer pocket problem for good.
Natchez Shooters Supply is the cheapest I have found. Depending on the brass lot and the chamber reamer throat you may have to turn the case necks to get them to chamber.

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Old 03-01-2008, 02:11 PM
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Raul, I have a 240 Gibbs, and it is pressure sensitive to slight variations such as case capacity. I believe your LC 69 brass is military brass from the Lake City facility isn't it? Most military brass I have played with has thicker walls thus less case capacity. It could be causing pressures to go higher than if you were using regular commercial brass. I have experienced blown primers when changing brass. If in doubt, compare brass weights of different sources and that might help you figure out what's going on.
Good luck, Randy
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Old 03-02-2008, 01:40 PM
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Thank you all fotr your tell me your experience
Yes , RWA , there are military brass . I had used them because they are stronger than comercial . Of course that I reamed internal or external necks .
Capacity are similar than some comercial brass i can get here in Uruguay.
RWS brass is excelent . i used in my 8 x 68 and 6,5 x 68 calibers, but i can't get in 25-06 or something similar.
25 Gibbs are an excelent caliber , similar to 257 Weatherby in velocity with 24 inches barrel.

I had hunted a lot of deers with it.

I will try with soe WW 25-06 brass but I think they are too soft .
We will get in contact
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Old 03-09-2008, 04:08 AM
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Gibbs brings back old memories, I had a 240 Gibbs for afew years, then I went to the 6mm/284, that was a great round to hand load. I think the 6.5/284 would be even more practical. Today, with less rifles, I stick with factory rounds, as there are so many choices.
Born pre-war; 1939 and proud of it!
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Old 02-05-2014, 03:54 PM
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I got my first 25 Gibbs when I was 18. I will be 71 this summer. I am on my third barrel.

Your ideal of using 25-06 brass is not a good one unless you stretch the neck out to 270 caliber then neck it down with the 25 dies. I have the best luck using 30-06 brass. If you use 25-06 brass without doing something so you headspace at the top, the brass will stretch from the bottom and the top and you will be lucky to get more than 10 - 20 % of your cases fire formed right and they will not last long. I have the best luck taking a 30-06 brass and using calipers to measure how deep, neck the brass down with your 270 die to the depth of your 25 gibbs. Then neck it down with your 25 gibbs dies. This will give you a bulge in the neck at the proper headspace depth so that the brass will stretch where you want it to instead of at the bottom. If you do this you should have a 95% success rate in fire forming the brass and get reasonable life from the brass. Also these high velocity cartridges have a very short barrel life. My first barrel I got maybe 1000 rounds before it burned out. The last one I got somewhere between 500 & 600 rounds. I have started fire forming by putting 8 or 9 grains of some fast powder, like W 231, FIlling the case up with grits or walnut polishing media, and closing the case with a 22 caliber cleaning patch and shooting it. This does a fairly good job of fire forming and does not use up part of your barrel life.
I have also had better luck using slower powder like H4831SC.
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Old 02-05-2014, 05:28 PM
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Welcome to Shooters Forum, Tex.

The thread you posted to is almost 6 years old, but the information you gave was spot-on!

Hope to see more of your comments around the forum.
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