POI difference between M193 and M855?

[Eurodriver]

Just curious what you guys are seeing switching between the two rounds?

I have my SHTF stash of M855 (and thus all of my rifles are sighted in for M855) but recently found a great deal on M193.

Went to the range today and I had to dial both rifles' impacts *down* (I was shooting high).

That sounds right to me logically (lighter faster round, heavier, slower m855 bullet drops more) but it was around 3 MOA. That seems pretty substantial.

[Apricotshot]

YOu'd have to re-zero if your lot changed as well. No matter the M855/M193 regardless.

[RearwardAssist]

There is a good write up on TOS about the trajectory and difference when shooting m855 and m193 from a 16" barrel I will pm you the link not sure if posting it would be bad form here.

[Clint]

What range (distance) were you shooting?