I started mine with 225 TTSX and RL25 and worked up to the max load which is 98 gr RL25
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Mine is a custom rebarrel with a Brux 26" and a tight chamber. I had it reamed so that it does not have a long leade and I can load to the lands and still fit the magazine. Because of this my barrel produces too much pressure at this level with RL25 and I lost the primer pockets by the 3rd reload. Loaded a few at 96 gr and saw the faintest hint of brass flow on the case head. Now I am down to 94 gr and the velocity is still holding above 3100 fps.

Haven't really tried any other powders since I have plenty of RL25.

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