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powder for 12g 28 and 32 gram slug"s


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AS is not suitable for slug loading it's too fast just because it's a 32 gram powder don't mean you can load solid slugs with it .

 

Lead shot has fluiditity ,a solid slug does not ,use a proven powder designed with the correct load for SLUG not Shot

 

There is plenty of load data for American powders on the web for slug loads use one of them

 

Deershooter

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Actually, it is generally regarded that a slug is kinder on a barrel than shot and the real reason slightly slower powders are used is to get more velocity over what shot could be driven too.

Another consideration is the mass of a large cast slug.

Too fast a peak pressure powder can obturate the soft slug too much.

I have had balls turn to cylinders etcetera.

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Actually, it is generally regarded that a slug is kinder on a barrel than shot and the real reason slightly slower powders are used is to get more velocity over what shot could be driven too.

Another consideration is the mass of a large cast slug.

Too fast a peak pressure powder can obturate the soft slug too much.

I have had balls turn to cylinders etcetera.

+1

My general understanding also is pressure is less with a solid slug as sideway forces are less.

 

Also the op is not trying to make them to kill wild boar or other large or potentially dangerous animal but for practical target shooting so maximum velocity, energy and recoil are probably not required but a quick second shot may be.

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I would go with Deershooters explanation. My understanding is that this is why you get higher pressures with steel, lack of compressability.

Like I said my knowledge is only from general observation of load data over the years as I have never had the need to shoot slugs.

For example from the gualandi data tables and picking a powder which has both a slug and lead shot load of same weight in 12ga and case closure I.e rex32 show the lead shot load as 1.65/1.70gm and the slug load as 1.85gm so if the slug naturally generates higher pressure would you not expect the powder dose to be less for the slug? But sadly they list no velocity or pressure but one assumes they must be within cip for the pressure.

 

My normal self preservation method would apply either work the load up or use the services of the proof house to be 100% safe.

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+1

My general understanding also is pressure is less with a solid slug as sideway forces are less.

 

Also the op is not trying to make them to kill wild boar or other large or potentially dangerous animal but for practical target shooting so maximum velocity, energy and recoil are probably not required but a quick second shot may be.

There just for steel plates and paper out to 100 yards accuracy is needed for the paper punching part

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