Clark, on my travels, I picked up some CCI Quite .22 lr with a segmented hp.. They are 710 fps. I believe the had a faster load, but these were great for town pests.. The only time I ever saw these loads, and don't remember where I got 'em..
I can't go more than 1/2 gr powder with a 24" barrel and keep the escapement gas subsonic.
I chambered a 6mmRem today for hunting Oct. I don't know if I am can build another really long barrelled 22 in 2015, but I will in 2016.
I lost a big rat to wimpy ammo yesterday and a crow only gave up a feather this morning. But i got a small rat a few minutes ago.
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway The man who makes no mistakes does not usually make anything.-- Edward John Phelps