hi
I wonder how fast a 30 caliber in linotype could be used without using gas chec?
Danny

If it's from a GC design mould, you need the GC. Otherwise, you get fliers.

If you have a PB mould, 1600 fps is the generally accepted upper limit. With coaxing and luck, you might be able to push that up to 1800.

ive pushed plain base bullets cast from 5050lino ww to 2000 fps in a good barrel without leading Just make sure your bullet fits your gun and you use good lube. Ive done lynotpye to 23oo fps