I got these on Gunbroker the other day and am looking forward to shooting my first 22 Svg HP/5.6X52R.
It was good timing. S&B USA just imported a bunch of 70gr SP ammo. I ordered 5 boxes from Bud's. They were the cheapest, shipped.
I'll try 60gr Nosler PT .224 bullets for my first reloads. I believe these have a 1-10 twist and will stabilize the .227 70gr Hornady's, should Hornady ever make any again.