You want to avoid handloading, my friend, but you're going to have to, sooner or later. When I got into shooting, there were mountains of WW2 .303 cluttering up the landscape and very nice 8x57 was available at a nickel a pop. Austrian 8x50R was 4 cents a round. 6.5 Carcano was 6 cents (even in Canada) for Boxer-primed Winchester-Western stuff, you could get 11mm Mannlicher for $3 a hundred and many others. Even .43 Mauser was $3.65 a vox of 20, NONM primed, smokeless load, Dominion brand.
ALL gone now.
The supply of GP-11 will NOT last forever.
The only two companies that make it are Norma Projektilfabrik A/S in Sweden and Prvi Partizan in Serbia. The one is shockingly expensive, the other seemingly unavailable.
TRADEX (up at the top of this page) stocks brand-new Boxer-primed brass, the round uses any .30-calibre slug, any medium-range powder and standard Large Rifle primers. It is easy to oad and quick, too. And you have the satisfaction of turning out ammo that makes YOUR rifle shoot like a champ while everyone else is happy to shoot into 2 minutes.
Give it a think.
And do enjoy! That's what this whole sport is all about.