Quote Originally Posted by air-tech View Post
...I still have a monster muzzle weight for the 52, in my desperate attempt to make it shoot more accurately. It was in .177 and with lightweight pellets, loaded for fun, I would often get some going supersonic!!

I dont belive to the effect of "muzzlestuffs" of any kind...never found real advantages using such things on springers.
The 48/52 can be accurate only using the right pellet, choosing among:
- HN Baracuda match;
- JSB Exact Heavy;
- CP Heavy (if you find the right die nbr).
Need to check if your barrel like the 4.51 0r 4.52 more, the max velocity should be in the range 870-900.
My 52 with a JM Monolith spring and some internal works shots JSBH @ 890-900 fps and prints 1-1,5" groups @ 50yds consistently.