H1000/2217 is more temp stable than 2225.
2225 in my 7 mm rem mag had 5 inches of vertical difference in group centres at 1000 yrds from cold ammo to hot ammo.
If you need the extra velocity that 2225 can give, and you still have the accuracy you desire at that extra velocity, then store your 2225 powered ammo in your pocket, this averages its temp and your poi.
Now i just use 73 grains of 2217.
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