You can usually measure DC inrush on these clamp meters that packs " AC inrush feature", which is useally spec'ed for AC use-cases.
Though have no idea what kind of accuracy you actually obtain when using "inrush" on DC usecases..
Mostly the higher-end Fluke clamp meters, that I recall also mention DC on the inrush.. fx Fluke 345PQ
I purchased a cheap welder so I could fiddle with fast & high amp/current bursts, both on stand alone clamp meters with inrush, and on AC&DC clamp meters for scope.
It's a welder from China, its self-contained construction makes it easy to test with and gives more than one amp-burst.
Gives me control over the pre-burst 0-10ms & the main-burst 1-80ms alongside an adjustable 0.5 to 2.5sec delay.
price was around 22 US (incl. 25% VAT & delivery) so relatively little for a unit that also contains battery, which needs to be shipped under special-goods category
Quite fascinating when handheld, as you can both feel & see this current wiggle effect when the burst takes place. (got a specific name this effect, cant recall it)
Tested with an AC+DC clamp meter with inrush feature (AC) from a few years back (HT208D) its often sold under names like Kaiweets/Habotest/GVDA etc.. its a 1000A AC/DC clamp meter that costs a fraction of the Fluke variants, at around 35 to 40US incl. VAT & delivery.
- it goes without saying that the Amass connector used here below' aint rated for these amps, more like a fraction - and will to an extent bottleneck - but it is very brief pulses, and as long as I don't make too fast continuously burst the heat buildup is tolerable in both the connector and the rigid solid cobber wire when monitor the temp on thermal camera.
There are likely way better approaches to doing such tests while having millisecond control over these stacked bursts at hundreds of amps, but for me, it's important that it is small, portable, and easy to store away when not used - alongside being relatively cheap, as it's solely curiosity that drives the interests and a learn a little.
preheatburst6ms/mainburst33ms..