Re: 25/06 115 VLD with Retumbo powder
If you check the Nosler site, they list the 110 g bullet getting 3267 with 59 g of retumbo in a 24" barrel. I was getting just over 3300 in my 26" barrel with about the same load. With a 115 g bullet you can expect about 80-90 fps less. I'm guessing you should be getting close to 3200 fps or more with 59.5 g of Retumbo and the 115 VLD out of a 26" barrel. Your drops will confirm whatever getting.
With RL17, I was getting just about 3510 with the 110 and 3405 with the 115 Ballistic silvertip.