300 PRC / 200 LRX / H1000 -- in Quickload

[fremont]

Using Barnes' load data for this chambering & bullet, Quickload is giving me some surprisingly low est. MVs and pressure. I used H1000 as 1) I have it and 2) Barnes lists it as the most accurate powder for this bullet. Has anybody used H1000 and the 200 LRX in the 300 PRC?

 

[slikmrc]

Did they maybe use a short case OAL and run out of room for powder?