I have 2 Mashburns with 24" barrels. I have loaded 1 with 162 gr Hornady Interlocks, 26 gr RL-25 and it chronod at 3275. Accuracy is about .6". That load was a little hot so I backed down to 24 gr and 3200+/-.
The other is a dedicated 175 gr shooter with 72 gr H1000 at 3060.
I like them both a lot.
