There are a couple of outfits in the states that offer what you are looking for, the only one I can recall is Ultramax. Unfortunately I have never seen their line available in Canada. I shoot lead handloads in my .32 spl for cowboy side matches. The two best loads I have found are 16 grs of SR4759 and 20 grs. of Alliant RL-7 behind a RCBS RNFP GC bullet. I am pretty sure those would work reasonably well in a .30-30 although the rifling twist rate is a lot quicker in the .30-30 than the .32 spl.