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I fall on the side you will be fine.
That does ASSSUME tht you indeed id the same powder.
Factory loads to the lowest common denominator (old guns if they exist).
When a gun will take a 150% proof load and no issues then it takes an extraordinary screw up to push one over the edge (grease the bullet or leave grease in the barrel per the 1903 low serial controversy)
And you can do the same thing with any load (screw up)
So yes, if you can truly ID the powder then not an issue.
You will find they are below the max also (test it with a chrono and see!)
I have yet to see one meet the advertised.
The nonsense about the same gun is just that. That data in the re-load d manuals is there to ensure you know what your plus or minus performance is.
Obviously you are almost certainly going to shoot it in a different gun with a different barrel length and a different chamber, in factory or re-loads, sheese.
It is not there to ensure you have to shoot that same gun or risk death ir dismemberment
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