I just started working with the 130 AB last weekend. I loaded up to 50.5 grs of Re 22, groups were just starting to tighten up at 50.2(.672) 50.5 went into .470 there were no pressure signs and velocities at 50.5 were 2999, 2998, and 3016.
Components were Lapua brass, Fed 210 primers and the 130 gr AB seated .010 of the lands at 3.465 on a Stoney Point comparator.
In the near future I will be loading up to 52.0 to see what happens.
Hope this helps
Ignorance can be treated with education, sadly there is no cure for stupidity.