Well that gets about as good as it gets. An example of a great rifle further enhanced by a full tune by a tuning house of that era. There aren't many high profile Custom Tune Houses, a few in the UK and a few in the USA. They didn't do great numbers so any is a real piece of Air Rifle development history. If they proved anything it was that the market and demand was there for "better" air rifles. Importantly money was there for those brave enough to produce "better" mousetraps, so investment was made.
To me its an important rifle in the development of Air Rifles. The 1980's being the time when air rifles really took up the momentum to the sport we now enjoy.