Nicely step up rifle. People seem to have learned a lot about the Whisper and each new build is getting now more impressive and more versatile with the use of light weight super- and heavy weight subsonic loads.
My only advice to you is to practice your loads and groups. 25 yards can give you a false impression in subsonic load testing - the real value is at 100 yards and great groups close in can suddenly open up.
And depending on what you are wanting to hunt with the light weight bullets, think about trying a pack of 125 Nosler BTs and 130 Grain Barnes X. They are really good performers at the Whisper velocities.
Finally, I have had 180 grain SSTs open up a little at subsonic velocities but I would personally confirm any claims you read on the Internet about bullet performance at low velocity.
Well done again!
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