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Has anybody used Win 748 for the Hornady 120gr GMX bullet? If so, what were your results? I have a BCA upper and lower with 24 inch barrel and was wondering what your FPS was? I am going to load up some and see if my gun like them.
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It is important to remember that copper or gilding metal (the "GM" of GMX) is only about 80% the density of lead. The 120 gr GMX is physically the size of a 150 grain lead core bullet, so pretty large for the Grendel. From what I have seen, most of the Hornady GMX/CX bullets need about 2000 fps to open, so the effective range would be pretty short.
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