Brands
RPB
These are RTI's slug-capable barrels. The twist is fast enough to keep slugs stable and slow enough that they won't destabilize pellets at normal speeds
RPB barrels in .25 will be a snug fit for .251 slug.
LR
A slower twist keeps pellets stable at higher speeds and longer ranges. RTI introduced a "Long Range" barrel to fit this niche.
It began as an separate, upgradable part in early 2020 ahead of the Prophet's release. it's polygonal, with a 1:32" twist by Lothar Wlather, choked at 0.02mm (see here). It was listed alongside the Priest II, initially in 2020 for .22 as an add-on. And quietly followed up with a .25 option.
By May 2022 the LR barrel had fallen from mention on RTI's site in deference to the newer RPB barrel that emphasized slug & pellet compatiblity.
LW
As of the mid 2020s, RTI has a close relationship with Lothar Walther; every non-RPB barrel that comes on a Mora is made by LW, and so are the the RPB barrels.
CZ
CZ was the original provider of RTI barrels. The Priest hit the market with three choices of 20" CZ barrels. Eventually, there was a 24" offering, with the .25 barrel on the Prophet. The last rifle to ship with a CZ barrel was the Prophet 2 Compact.
Barrel Length
700mm | 28"
Introduced in 2024 on the Mora Sniper (with backwards compatibility to the P-platform teased).
600mm | 24"
This is the default length length for all RTI rifles since The Priest. It showed up as early as 2020 with the Prophet September (not listed) and October (listed)
Found on the Prophet 2 and P-3 Standard and Performance in .22, .25, and .30 (not .177, those carry a 510mm barrel).
500mm | 20"
Found on The Prophet 2 Compact and Priest 2 Compact (both Performance and Standard) 500mm was found on X and 510mm was found on Y
400mm | 16"
These short barrels are available as aftermarket parts in
by CZ in .22 and .25
and
Lothar Walther in .30
See also
here and
here.
These are supposedly found in the .177 variants of the Priest 2 and Prophet 2 (though not the P-3???).