6.5 Sherman and US 869?

Much smaller kernels allow for less bulk taking up space in the case. So you can pack more charge weight into the case, which you need to meet N570 speeds. The burn temp of N568 is also lower than N570.
It sounds like N568 might be just what I need. I have a one of a kind '6.5mm LWS', which I designed and had built perhaps 30 years ago. LWS is my initials. I haven't fired it or reloaded for it in about 23 years. But now that I'm retired I want to get back to loading for it and using it. It has a 75.0 grain full to the top water capacity just as for the Sherman Long, when I use Winchester brand 270 Win. cases as my starting point, so the 6.5 Sherman Long data makes for a very good match to it.
 
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