I am wanting to try 100 grain tsx in my rifle with h1000 but can not find any info on the combination there is a lot of guys saying they use it but not giving up their data. Barnes only lists 2 powders on their site. thanks
The only data I could find for 100 grain bullets and H1000 is for cup/core bullets and it lists a Min charge of 73 grains and Max charge of 78 grains. I am not endorsing this data and you are free to do what you wish, but if I were doing the loading I would use it. H1000 is a very slow burning propellant ( not fickle like some faster burners) and I really don't think you would have any trouble if you start low and work up.
I messed around with my two 257's- a rem 700 and vanguard Submoa model. I found that 72 gr of IMR7828 and RL 22 was the best with the 100tsx at 3.19 OAL.. 22 in the 700 and 7828 in the wby. I tried H1000 it wasn't as good. Wby brass, Fed 215M, Barnes 100 TSX.