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I bought some Sierra 100gr hollow point from the local. They were pretty cheap $42 per 100. Just thinking of using them as a varmint load. Decided to at 42gr of AR2208 which is where I am at with HORNADY SST AND INTERLOCKS both 139gr.
They shoot fine and the point of impact is very similar to my other loads. Decided the run the magneto speed over them on the weekend and to my surprise were only doing 2680fps.? I was expecting closer to 3000fps. I tried my other loads which usually do 2740fps and got 2720fps is was only 8 or 9 degrees at best.
I guess the similar velocity explains the similar point of impact. But I was still thinking the lighter bullet with the same powder charge should be going a bit quicker. Also see Sierra load data in picture. Varget is AR2208. I am a fair way down from book velocity. Rifle is a Tikka 7mm08 lite 22inch barrel.
Thinking AR2206H might give some more velocity with the lighter bullets?