One thing I learned is not to blindly trust their reloading data, cause the 35 Whelen load data with RL-15 is super hot.
I saw a copy of what looks to be an email from Geoff in 2008 that shows 57gn with that powder and weight projectile, and would be super hot. The subsequent Woodleigh reloading manual (2014) shows a maximum of 53gns.