I put an HS precision system in my BDL 22-250. Have 4's and a 10 round mags for it. Have to load the 10 rounders near the front for them to feed %100, 4 rounders can be loaded wherever.
Have another one in a SPSss 270wsm, the small mag only holds 2, but the big mag holds 7.
My only complaint with HS is the release button is a little small for gloves, but I see they make a GenII set, so maybe they addressed that. Not a cheap way to go, factory DM set-up and cutting the stock would be the cheapest.
I have a couple LongAction Kwik Klip set-ups too. They are ok for non-magnums, and a little touchy for belted cases. I have LA 4 & 10 rounders for them, but not sure what they make in short action.
Hard to beat the factory set-up, just no large magazines.