Estimate chamber pressure and muzzle velocity for the 280 Remington with the free,
in-browser MyLoads internal ballistics simulator. The figures below are illustrative
estimates from a physics model — not a recommended load. Always cross-check a current
published loading manual.
280 Remington reference
Maximum average pressure (MAP)
60,000 psi
Nominal case capacity
67.0 gr H₂O
Groove / bullet diameter
0.284 in (7.21 mm)
Example simulation illustrative
Bullet
Hornady 0.284 150 gr ELD-X
Powder
IMR 4350
Charge
46.5 gr
Barrel
22 in
Muzzle velocity
2,576 fps
Peak chamber pressure (interval, ±10% burn rate)
37,712 – 46,424 – 56,052 psi
nominal is 77% MAP (60,000 psi)
Illustrative example — every figure is an estimate; always confirm your load against a current published manual before loading.
Popular 280 Remington powders
Powders and bullets handloaders commonly use for the 280 Remington, drawn from public discussion and listed most common first. They appear as the Popular group in the calculator's pickers. This is not a load recommendation — always check your load against a current published manual.
Hodgdon H4831SC
IMR 4350
Alliant RL-19
Hodgdon H4350
IMR 4831
Alliant RL-22
Hodgdon H1000
IMR 7828
Alliant RL-17
Hodgdon Varget
Vihtavuori N560
Alliant RL-26
Popular 280 Remington bullets
Nosler Partition 7mm 160 gr Spitzer
Nosler AccuBond 7mm 140 gr Spitzer
Hornady 0.284 162 gr ELD-X
Nosler AccuBond 7mm 160 gr Spitzer
Berger 7 MM 168 gr VLD Hunting
Nosler Ballistic Tip Hunting 7mm 150 gr Spitzer (Red Tip)
Barnes .284 140 gr TTSX BT
Sierra 7mm 284 Caliber (.284) 160 gr SBT GameKing
Nosler AccuBond Long Range 7mm 168 gr Spitzer
Nosler Ballistic Tip Hunting 7mm 140 gr Spitzer (Red Tip)
Nosler AccuBond 7mm 150 gr Spitzer
Sierra 7mm 284 Caliber (.284) 150 gr SBT GameKing
Hornady 0.284 150 gr ELD-X
Use MyLoads as a 280 Remington velocity and pressure calculator: it estimates
muzzle velocity, muzzle energy and the full chamber-pressure curve for your own powder,
charge and barrel length, compared against the reference facts above.