Mark,
The hw50 has much more potential as a hunting tool than a 30 which is a basic small starter rifle.
The 50 IIRC put out around 10 - 11 ft lbs but could be tuned to imporve on this slightly.
The 50 is a well made, accurate and solid rifle made to the same standards as its bigger brothers, If not a record trigger fitted then the 50 has the Perfekt (sp) trigger unit which is very good and more than useable!
These sometimes come up for sale at very reasonable costs second hand as i believe many people think the 50 is not up to its bigger brothers in terms of build and performance.
Unfortunately there do not seem to be that many of them about so you may have to wait to find a nice 2nd hand version??
michael