Originally Posted by
curator
One of the keys to getting the .32-20/310 cadet rifles to shot accurately without leading is using the correct diameter (.319-.322) heeled boolits cast of ACWW alloy at about BHN12-15. CBE in "Straila" makes the best .310 cadet moulds for the money. Slug your rifle first. Another tip is using the "wax gas-check" or a 1/8" dental wax wad under the boolit. Shooting smokeless powder means the breech pressure is not sufficient to obturate the boolit enough to seal powder gas blow by until the slug is 2 or 3 inches down the bore. This is the source of the "leading." The wax wad fixes this problem. Some years ago, Ross Siefried wrote an extensive article on getting the .310 Cadet and the .32-20 conversions to soot accurately. Copies of this article are probably out there in cyberland.
MY go-to load for the .310 Cadet and the .32-20/310 cadet hybrid is 4.5 to 5.0 grains of unique, a 1/8 inch wax wad under the 120 grain CBR .310/322" heeled boolit lubed with Lee liquid Alox. This load shoots to the sights on the Cadet rifles out to 300 yards which is all the distance I have to shoot locally. Plenty of information out there on the web about doing this. Some of it is actually true!