Loading ammunition for Double rifles

[Hallgeir Gravråk]

I wonder how do you guys reload your ammo for use in doublerifles?
I`m thinking, the double maybe sensitive for hard loads, maximum and over loads.
I heard that the force when you shoot can twist the barrels apart.
Somebody in here that have some experience?

 

[Red Leg]

Doubles require a different approach - they are "sensitive" to every load. Maximum anything is hard on most rifles - with a double it will hasten the rifle shooting "off face" - no quite sure I understand what you mean by twisting the barrels apart. But that really isn't the point. Key is shooting a load which regulates. The original rimmed nitro loads were developed to provide a heavy bullet at moderate velocity with relatively low operating pressures (though the original cordite loads fluctuated wildly with the ambient temperatures). With modern powders, most nitro doubles regulate around 2100-2200 fps; the correct powders achieve that well within normal operating pressures. Some of the modern rifles are regulated with Hornady factory loads, and hand-loading to those specs should keep you within normal operating ranges. A be-spoke English rifle can be regulated to any load the buyer requests. A fine double is not a platform for playing around with max-pressure loads.

 

[BRICKBURN]

............... A fine double is not a platform for playing around with max-pressure loads.

That's what a bolt gun is for.

 

[sierraone]

Many members of AH are hand loaders. A lot of them based on various posts seem to always be trying to get bigger and bigger bullets to move faster and faster! Each to his own. But if I were you with consideration on reloading for your double....pay attention to Red Leg and Brickburn.

 

[Hallgeir Gravråk]

My double rifle are regulated with Norma 300 grs TXP ammo,
It`s a A-Frame bullet, loaded to 2560 fps.
My normal loads go to 2500 fps max load is at 2550 fps.

I use Norma 203B powder.

 

[Hallgeir Gravråk]

Doubles require a different approach - they are "sensitive" to every load. Maximum anything is hard on most rifles - with a double it will hasten the rifle shooting "off face" - no quite sure I understand what you mean by twisting the barrels apart. But that really isn't the point. Key is shooting a load which regulates. The original rimmed nitro loads were developed to provide a heavy bullet at moderate velocity with relatively low operating pressures (though the original cordite loads fluctuated wildly with the ambient temperatures). With modern powders, most nitro doubles regulate around 2100-2200 fps; the correct powders achieve that well within normal operating pressures. Some of the modern rifles are regulated with Hornady factory loads, and hand-loading to those specs should keep you within normal operating ranges. A be-spoke English rifle can be regulated to any load the buyer requests. A fine double is not a platform for playing around with max-pressure loads.

I mean that the rotation force from the bullet are twisting the barrels apart, if you go with maximum load and stiff bullet.

 

[HWL]

Dear Hallgeir Gravrak,...

Forget all this woodoo about regulation of double rifles!

They can be regulated to every point of impact you want, at every distance you want, with a screw driver and an allen key.

..whatever an ammunition you want to use....

 

[Hallgeir Gravråk]

Thats correct, I find out that my Krieghoff have a screw betwen the barrels in front.

 

[Opposite Pole]

Thats correct, I find out that my Krieghoff have a screw betwen the barrels in front.

In K gun it depends on the calibre, my 9.3x74R barrels are easily adjustable but the 470 ones are soldered.