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LoadData - .220 Weatherby Rocket in a Weatherby

.220 Weatherby Rocket in a Weatherby

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Warning! Notes: These loads were maximum in a Weatherby rifle with a 26-inch barrel, and a one-in-14-inch twist. Due to its extremely long freebore, these loads may be excessive in other rifles. This data is intended only to indicate the potential performance of the cartridge. Owners of rifles in .220 Rocket are advised to use starting loads shown in various handloading manuals for the .220 Swift and work up only if pressure signs indicate it is safe to do so. This load data was developed in Hornady .220 Swift cases after they had been fireformed to the .220 Rocket. CCI-200 primers were used in all loads with extruded powders and CCI-250 primers were used with Ball and spherical powders. Velocities represent an average of five shots measured 12 feet from the muzzle with an Oehler Model 33 Chronograph. (Handloader Issue 143)
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
70 Speer SS Alliant RL-22 Click Here 3,483
70 Speer SS Winchester W-785 Click Here 3,547
70 Speer SS Hodgdon H-450 Click Here 3,541
70 Speer SS Norma MRP Click Here 3,525
70 Speer SS Hodgdon H-4831 Click Here 3,555
70 Speer SS Alliant RL-19 Click Here 3,562
63 Sierra SS Alliant RL-22 Click Here 3,679
63 Sierra SS Winchester W-785 Click Here 3,746
63 Sierra SS Hodgdon H-450 Click Here 3,757
63 Sierra SS Norma MRP Click Here 3,697
63 Sierra SS Alliant RL-19 Click Here 3,679
63 Sierra SS Norma N-204 Click Here 3,714
63 Sierra SS IMR IMR-4350 Click Here 3,726
63 Sierra SS Hodgdon H-414 Click Here 3,748
63 Sierra SS IMR IMR-4064 Click Here 3,641
55 Sierra SP Winchester W-785 Click Here 3,922
55 Sierra SP Norma MRP Click Here 4,016
55 Sierra SP Alliant RL-19 Click Here 4,007
55 Sierra SP IMR IMR-4350 Click Here 3,992
55 Sierra SP Hodgdon H-414 Click Here 3,933
55 Sierra SP IMR IMR-4320 Click Here 3,887
55 Sierra SP IMR IMR-4064 Click Here 3,914
55 Sierra SP Norma N-202 Click Here 3,934
50 Hornady SP Norma N-204 Click Here 4,217
50 Hornady SP Hodgdon H-414 Click Here 4,223
50 Hornady SP IMR IMR-4320 Click Here 4,191
50 Hornady SP IMR IMR-4064 Click Here 4,175
50 Hornady SP Norma N-202 Click Here 4,187
50 Hornady SP IMR IMR-4895 Click Here 4,166
45 Speer SP IMR IMR-4064 Click Here 4,277
40 Sierra HP IMR IMR-4064 Click Here 4,323
70 Speer SS IMR IMR-4831 Click Here 3,588
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