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Low and Left is very common,

You are in the lower end of the load data, Speer shows Bulseye 250 gr lswc at 6.3 to 7.0, i couldn't find the data for 255 gr, most bulseye data is for lighter loads.

You can kick it up to 6.5 gr and see what that does, it should definately raise your poi, whether it moves it to the right is up for grabs.

After that I would go up in 0.1 or 0.2 gr increments, carefully watching pressure (although you can load the rugers fairly stout)

You might also considering changing powders, if you cannot get it perfect. For punching paper I have had good success with unique in the 45 vaquero

Let us Know how it turns out   JM
 
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