The Rock Chucker Supreme has great qualities:

Large O Ring window to accommodate the larg magnum cases of today.

Accommodates both left and right handed handloaders.

Positive spent primer retention. Primers are guided into a baby jar type container.

Can be upgraded to a progressive loader with the addition of a Piggyback 4.

Compound leverage.

Cast iron construction.

Durable powder coat finish.

Lifetime warranty

Good luck.