bangers Posted August 3 Report Share Posted August 3 Hi All. I have question about chamber length, I've been using 67mm cartridges with no issues, but I've just bought some 70mm, so before I use them on the metalwork under the barrel release catch is says 12-70. So 12 must be the gauge is the 70 the length of the chamber? It's a lamber sporter. Cheers Quote Link to comment Share on other sites More sharing options...
TIGHTCHOKE Posted August 3 Report Share Posted August 3 Yes. Quote Link to comment Share on other sites More sharing options...
scarecrow243 Posted August 3 Report Share Posted August 3 70mm or 2 3/4 cartridges are fine Quote Link to comment Share on other sites More sharing options...
bangers Posted August 3 Author Report Share Posted August 3 👍👍 thank you Quote Link to comment Share on other sites More sharing options...
enfieldspares Posted August 3 Report Share Posted August 3 Yes. But bear in mind that a petal folded crimp closed 70mm cartridge will fit quite comfortably into a 65mm chamber as, as you will know, that 70mm or 2 3/4" is the length of the cartridge case before it is "closed" after it has been loaded by the application of either a roll crimp or a petal folded crimp becomes foreshortened. Quote Link to comment Share on other sites More sharing options...
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