Swiss RS50 and RS52 reloading data for FTR

[andyC]

I have recently started shooting FTR using a .308 with 155 grain bullets.
Swiss RS50 and RS52 powders have recently become available in the UK but their reloading data is very poor.
Has anyone any experience with using these powders?
AndyC

 

[PHINPAD]

Bump..

I am in the same position and would like to find out more.

My first batch of testing with TR140/RS50 has not provided the velocities I was hoping for.

My test series progressed at around 15fps for every .2gn increase up to 45.8gn's resulting in 2873fps
then at 46gn's jumped to 2934fps. There were no pressure signs and I had only loaded up to 46gn's so don't know what would have happened at 46.2 but I didn't like the sudden jump in velocity.

I was shooting SMK 2156 155 gn at coal 2.88 in new lapua brass. 32" Barrel.

Looking around the Internet I am wondering if I should give RS52 a go.
Dave