I've had that little R3 Long for quite a few years now. I bought it from Derrick Wall
@zx10wall in 2019 (I think), and it shot well with the .22 RD Monster 25.4 grain. And of course, coming from Derrick, you know the trigger was perfect!
In order to shoot those at a good enough speed the gun was pretty much maxed out, so I did a few things.
- Added Huma reg.
- Added Huma Power Plenum
-Added Huma "barbell" hammer weight.
These mods allowed me to drop the reg pressure from about 160-165 bar down to 135 bar and lower the hammer tension quite a bit. The gun has always been very accurate and I decided to try some lightweight slugs at high speeds.
The NSA 22 grain .2165, the Daystate Howlers 22 grain, and the FX Hybrid slugs all shot lights out to over 150 yards. The Howlers were given the nod and tuned to about 990 fps.
Shortly after that, I took the gun hunting (not sure if Gerry was there?) and got three ground squirrels in about 5 minutes from 161, 172 and 172 yards. Three shots, three "helicopter tails"...
The Sightron on that came later and its one of my favorite scopes. Clear, good clicks, excellent reticle.
Interesting post...
https://www.airgunnation.com/thread...5-edgun-r5-super-magnum-slug-shootout.712462/