Vihtavuori N135
This power is ideal for 55-77 grain bullets.  Generally, this powder takes about 1 more grains than N133 for similar pressure.  Generally. 

Vihtavuori N135
This is an extruded stick powder, like all the VV powders we have.   N135 or N530 which is slightly faster are generally the powders you want if you are going back and forth between shooting 55 grain to 77 grain bullets.  N135 would be perhaps a hair slower than Benchmark powder, and similar to H4895 in load data. 
Varmint Loads
We can see N135 is good all around powder.  Good for medium weight bullets especially, but can be used for 55 grain - 77 grain just as well.

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