Anyone have any???Thanks ahead ,Huntz

I have not tried the Bergers but I am getting promising results with R26 and 140 gr. BTSP Hornadays. I started with Alliants data for the 150s and stopped at 61.5 grains for 3100 fps. I thought that was plenty as it beat some of my previous 130 gr. loads for velocity. I went up to 62 gr. with no traditional pressure signs. But for some reason R26 doesn't show pressure signs until your really up there. I suspect that peak pressure occurs further down the barrel and is a less sharp curve or spike than non progressive powders. But this is all speculation and the only evidence that may supports this is the barrel gets hotter at the muzzle first vs the breech first for non progressive powders.