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303 British - 174-180 grain loads

Warning!!

The load data presented here was safe in the test rifle and is presented for informational purposes only.
Use extreme caution, working up in small increments.
If in doubt as to the load's integrity, STOP !
I can assume no responsibility for improper or careless use.

180 Grain Speer Round Nose (.311)
OAL - 3.075 inches
Winchester Cases - CCI Primers

174 & 180 grain bullets have a proven track record, and are effective moose and deer medicine. Since the 215 grain bullet has been discontinued by Remington and CIL, the 174/180 grain bullet is the largest commercially available component manufactured in North America.

Powder
Minimum
Maximum
IMR4350
42.0 grains
MV - 2011 fps
46.0 grains
MV - 2251 fps
IMR4320
37.0 grains
MV - 2038 fps
41.0 grains
MV - 2232 fps
H4350
42.0 grains
MV - 2170 fps
46.0 grains
MV - 2294 fps
Win 760
(magnum primer)
41.5 grains
MV - 2133 fps
45.5 grains
MV - 2301 fps