Bingo - I suspected that you were using Hornady V-Max bullets, everybody seems to think that Hornady's reloading manual shows light loads but the reality is that Hornady bullets are shaped different than most other brands (longer shanks) and the result is that they produce higher pressures due to more of the bullet being seated in to the case.
In addition to the V-Max creating more pressure, you are using a slightly shorter COAL than Hornady recommends for the 55gr V-Max (they recommend 2.250") so you are using a bullet that has a longer shank than most other 55gr bullets and you are seating them deeper in the case than recommended - added together that results in higher than expected pressures.
Hornady recommends;
Trim-to-Length of 1.750"
Cartridge Overall Length of 2.250"
H335 Powder Charge of 20.8 to 23.2 grains
Using their recommendations in a 26" barrel and using Winchester brass they get muzzle velocities of approx. 2800 to 3100 feet per second. Those velocities would be produced by max pressures of around 31000 to 43000 PSI, 24gr would produce max pressures of around 50000 PSI with a muzzle velocity of around 3200 fps using the same barrel length and cartridge case. The SAAMI max pressure is 55000 PSI so the load wouldn't blow up the rifle but in a gas gun it's getting pretty hot.
I'd recommend getting a chronograph and verifying the muzzle velocity, try not to exceed Hornady's recommended 3100 fps (that will actually be less if your barrel is less than 26"). Increase the COAL to Hornady's recommended length, 2.250", and then reducing the powder charge weight a little. If you are using a gas gun you also have to worry about the pressure at the gas port, not just the max chamber pressure.