Really,really good.
More accurate and powerful than CCIs.
Nice big Hollowpoint, Truncated cone feeds well.
A little louder than CCI cb's but quieter than Remington Subsonics.
They shoot to a different point of aim than regular ammo, usually about 2" low at 25yds so you'll have to dial them in.
I can't say enough good things about them.
We are talking about Remington RF ammo here, right?
How loud were they on your Norinco Shorty? I'm still waiting for mine to be delivered.
Didnt have very good luck with C-Bee's in my VTR-597. Failure to fire and feeding issues.