None that I know of, it's only been within the last few years Marlins quality has been terrible. I wouldn't buy anything Marlin has produced in the last three or four years, the last Marlin I purchased for my grandson was produced in 2012 and the bore was quite a bit over sized. In theory the minimum grove diameter of a 30/30 barrel measured from the top of the lands to the top of the opposing lands should measure .300", the minimum bore diameter should be .308". The rifle I gave my grandson was a full .002" oversize, many of the barrels on the rifles being produced today have oversize bores, I have a 30 caliber bore gauge that I can check a 308, 30/06, 30/30 etc, it's a Scott A. Duff bore gauge, I started using because I had a Savage model classic 114 that would only shoot heavy bullets (180gr and heavier) I discovered the barrel was over sized only after using the gauge. Very few barrels will gauge minimum diameter because the tooling used is just a tad over sized to enable the machinest to cut several bores before discarding the cutter/reamer!! William