Crumpler1991 Posted January 4, 2015 Report Share Posted January 4, 2015 I cant seem to find the usual steel proof mark on my browning but what does sp mean? Cheers Quote Link to comment Share on other sites More sharing options...
hoggysreels Posted January 4, 2015 Report Share Posted January 4, 2015 Try internet search "Browning shotgun markings" .. possibly SP may indicate, steel proof .. best confirming first though .. atb Quote Link to comment Share on other sites More sharing options...
Andy H Posted January 5, 2015 Report Share Posted January 5, 2015 Sp should not be on a belgian made Browning but if it was an american made or a reproof SP with a crown above it should mean special/superior proof done in a british proof house. Quote Link to comment Share on other sites More sharing options...
farmer7 Posted January 5, 2015 Report Share Posted January 5, 2015 If its SP in a circle over NP thats the Japanese nitro proof mark, I.e. from the Miroku factory. Quote Link to comment Share on other sites More sharing options...
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