Seems to me, the European load ran around 2,350fps - perhaps 2,450fps, around the same as the "original" smokeless .22 Hornet data ran.

I still maintain, with cast bullets and TB loads, it's an incredible little grouse rifle.

My current .17Ackley Hornet, with jacketed and TB, runs 1,785fps and shoots into 1/4" at 50 yards.

With .22 cal and cast, it should run around 1,400fps at most, but likely in the 900fps to 1,000fps range. Like a rimfire, but CF and capable of more if/when desired.