Hi,
I just found out that these bullets exist, and recently purchased some. My reloading manual doesn't list them (it is about 2 years old) so I don't have any loading data for them. I tried contacting Sierra, but they are still out for the holidays. My question is can I used the data listed for the other Sierra 100 gr .257 bullets for this round? I will be shooting them through a 25-06.