There have been breakbarrels, sidelevers
, underlevers and even one overlever target rifle; but the 311 is the only bolt-action.
While I say the breakbarrels cannot compete with underlevers and sidelevers as far as long-range accuracy goes, there are some exceptions.
The breakbarrel uses the pivoting barrel as the cocking lever, while the underlever and sidelever both have separate levers to cock the mainspring, leaving the barrel fixed.
Breakbarrels are subject to some very different problems than underlevers and sidelevers, which have either a sliding compression chamber or some kind of loading tap into which the pellet is loaded, Only a very few underlever rifles load like a breakbarrel.
Usually, there isn't much you can do about seating pellets with a gun that has a sliding compression chamber, which may be found on both sidelever and underlever guns, because there just isn't enough room to work in.