G29guy, you shouldn't have any problems with the 10.4 grains Blue Dot under the 175 grain cast bullets, that is my target load from my S&W1006 1220-1235 fps and Glock 29 about 1075-1100 fps. Been shooting that load since 1990...
Just be aware, be sure you are not getting any leading especially in a factory Glock barrel. I cast my own 175 gr alloy 0.401" bullets and the Zambini lube works well to prevent leading for me. I have shot some 156 gr alloy at 1400 fps with ever so slight streaks.
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