I have shot the plinker 1800 or so out of my 30 carbine barrel, 16.0/H110/SR mag primer if I remember correctly and they shot well under 1" at 50 yards. I have shot the Hornady short jacket out of my whisper with H110 but at starting or lower load , seemed like 17 or so and they shot OK. They will make pressure sooner than the 110 jacket bullets in my barrel, exposed lead up front I guess. The plinkers shot just fine out of my 30/30 14" with 10. of unique under them. The Sierra 50th anniversary pistol manual gives some fast powder loads (AA#5,7 and Blue dot) for the Whisper . BE CAREFUL ruined some of the cases trying a fire form load with the Hdy SJ 100. My old octgon 30 carbine barrel --1:14 twist I think shot the plinkers at 1850 and shot them well . I think the bullet will take more than 200 fps but it is a little finicky about loads.
I bought 500 of the remington 110 rnsp to play with out of the whisper , have any of you tried that combo?