I have 2 -10 rounders for sale (Kwik Klip long action). PM if interested.
I have HS on a 22-250 and it's good, but pricey. I find the release button too small, and I have to load the 10 round mags with the ammo near the front, the four rounder works good though. Don't know where to get extra mags anymore.
The K Klip works good too, little lesser quality.
The best is the factory system, but no 10 rounders for them.