Yes. 23 with the grams and tti springs and 22 with fact followers. I have 11 mags, 2 with grams. No need to put them in all mags. Only use them when needed. Most of the time 1rnd doesn't matter.
I could not get the grams springs to work. Use the tti springs that came with the basepads. Works perfectly. You have to slightly modify the follower. Sell the new grams springs to your buddies that shoot limited or open.
You need to cut it. I wrap the outer around me then mark it with about 1 1/2-2" gap. Then install the buckle. This gives room for the inner belt to get smaller as it will bunch in the gap. Hopefully that makes sense.