Re: What should you pay for a MN 44 with a bright bore?
The biggest problem with M-N is the variations in bore size.
Most exceed 0.310 inches and many are as big as 0.314 inches. The only bullets that fall in this range are 303 British bullets at 0.312 inches. There also are a limited choice of bullet styles: FMJ and hunting bullets. But indeed there are both 175 and 150 grain choices in 303 British (Enfield) bullets. The standard choice is 175 grain but I suppose 150 grain bullets should be tried.
But if your M-N is on the larger size it may never shoot well (???). Only by slugging the barrel and making your own bullet of the correct size will you ever be able to maximize the accuracy of these oversized bore M-N rifles.
At least that has been my experience and that of others here who guided me down this 7.62 x 54R reloading path.