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Answered 2009-09-27 16:15:13

This goes back to the beginning of the auto 5 production in 1903. John Cockerill was a British Industrialist whose company supplied high quality steel to Fabrique Nationale (FN) which was the maker of the A-5.

The Cockerill name was first used on Browning barrels stamped "cockerill steel". The steel was a very strong quality that met the proofing requirements of guns that were shooting smokeless powder. Eventually the Cockerill name was dropped from the barrels and "special steel" was used instead.

The FN guns that were not sold to Browning in the US, uses the barrel stamp of "acier special" which means special steel in the French language.


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Identifies the barrel as suitable for modern loads.

what is the value of a browning 12 gauge shotgun Special steel field model.Serial # 01942RP112

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You risk damaging the barrels if you do.

If it has choke tubes, yes. If it is fixed choke, no. I called Browning about mine and that was the answer they gave me.

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That marking just means "Special Steel". You need to find a model name or number to determine what it might be worth.

You need to give more information. I assume it is a shotgun, but "Acier Special" just means it was made with "special steel" and we would need at least a model number to start looking for the manufacture date.

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