I know there are letter codes in the serial numbers of the SKB doubles that will let you know if the gun is ok for steel. Is there any way to tell on a used Spanish double?
The following was copied from the Spanish Gun Forum on shotgunworld.com regarding steel shot in Spanish guns:
REGARDING STEEL SHOT: PLEASE READ BELOW
Before asking the question, you should be able to do the homework and decide whether you want to take the risk or not. The decision is yours alone to make. It is your gun, fingers and face.
Because of the multitude of questions regarding this subject, I have found and I am including a link to a document that explains very well if you can use steel shot in guns proofed for steel and not proofed for steel.
http://www.chircuprodimpex.ro/produse/a ... nition.pdf
http://www.dse.vic.gov.au/CA256F310024B ... oofing.pdf
Please read and digest it. Included in the document are chapters regarding HIGH PERFORMANCE and STANDARD PERFORMANCE loads. Shot size, shot charge weight, momentum generated and shot velocity are all factors.
In short, a high performance steel shot shell should only be used in guns with the steel shot proof mark, the Fleur de Lis.
Standard steel shot shells (meeting CIP standards, not SAAMI standards. Remember the guns were proofed to CIP standards) can be used in guns not proofed for steel shot if the following conditions are met:
Pressure as published for standard shells is not exceeded
A certain shot size is not exceeded
The choke is no greater than modified
The shot velocity is not exceeded
The Momentum generated is not exceeded
The numbers are in the attached document for 12 ga and 20 ga. You will need to do the math yourself.
Read more:
http://www.shotgunworld.com/bbs/viewtopi...f#ixzz0yn1pYTNZ