303 British - 200 grain loads

303british.com

303 British - 200 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.

200 grain Mk 9 (.313 diameter)
3.000 inches OAL
Winchester Cases, Winchester LR Primers

This data is for a 200 grain jacketed bullet that I make. It is a semi-spitzer, produced in either .313 or .314 diameter and available seasonally. To date, it has accounted for numerous moose and deer.

180 gr. Sierra - left. My 200 gr. SP - right.

Powder

Minimum

Maximum

H380

39.5 grains
MV - 2145 fps

43.5 grains
MV - 2247 fps

N150

38.5 grains
MV - 2228 fps

42.5 grains
MV - 2349 fps

H4350

42.5 grains
MV - 2169 fps

46.5 grains
MV - 2381 fps

steve@303british.com