748 meters great! Just make sure your powder measure is static free, as it does tend to be really clingy compared to stick powders. It is pretty temperature sensitive. I've had 55gr loads around 26.5 grains that showed mild pressure signs at cooler temperatures, blow primers on a really hot day (85+). I personally found best accuracy in my Colt around 24.5-25grains with 55-FMJ, but I was using military 5.56 cases. If it turns out that you like 748, but want to save some money- try military pulldown powder WC846. It's almost identical to WW-748 and costs $87 shipped for 8# of the stuff.
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