The other plus with XTP is they have shot better with hotter charges than others in my Marlin, as in 25.0 H110 is the most accurate load.
This does seem to be a hot load, 24gr H110 is the max I'll load. Plenty shout enough load.
As I said, 25 shoots much better than 24 or 24.5 in my Marlin. Velocity is more uniform, and the shots cluster more than string. Primers make a difference too. CCI350 are much hotter than WLP, for example, and using 25gr with WLP seems to be less in peak pressure than 24 with 350's.
The data for H110 in 44mag and 240 XTP goes up to 25.9gr in the Hornady Contender data in the #7 manual. Even that isn't a max load. Hornady doesn't list max loads in their data, just loads up to a particular velocity category. Example: the 1750 velocity column in the T/C data for H110 lists 25.3gr, and in the 1800 column, 25.9 is listed.
The best shooting load with Nosler 240's out of my rifle is 23.1gr H110 and CCI350. Speers like 24.0gr and 350's.
