My IC-7300 has an internal antenna tuner that can handle a SWR of up to 3:1.
The other day I noticed that a frequency I was transmitting on (the 40m FT8 frequency FWIW) has an SWR of 1.5 (was my first time running FT8 on 40 meters). I expected that because the antenna itself is tuned for best 40m SWR in the phone region, which I use more often.
If I turn on the IC-7300's antenna tuner it can, unsurprisingly, knock that back to 1:1. But should I bother doing that? From what I've read, a SWR of 1.5 isn't that bad. What are the cons of using the internal tuner when I "don't have to"? And is 1.5 a "don't have to" or is that far enough from 1:1 that it's a good idea?