RELOADING THE .303 WITH SOUTH AFRICAN POWDERS

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   I have no 1 mk 4 Lee Enfield with a 21 inch 2 groove barrel. My loads with South African propellant powder S355 are as follows.Load no 1:   40.5 grain  S355 South African powder behind a 180 grain Sierra Pro Hunter bullet , Large Rifle Magnum primer , PMP case and overall cartridge length  78mm.  Group at 100 meter was 1.25 inch and at 200 meter 1.5 inch. Average velocity is 2397 fps.  No sign of high pressure on case or primer.
Load no 2 : 41.5 grain S355 South African powder behind a 180 grain Sierra Pro Hunter bullet , Large Rifle Magnum primer , PMP case and overall cartridge length 78 mm. Group at 100 meter was 1.0 inch and at 200 meter 1.5 inch. Average velocity is 2472 fps and again no sign of high pressure on the case or primer.
This is super for me and I suggest you start at lower loads and work up slowly to my velocities. 

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SAKKIE Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: November 18 2019 Location: Upington South Status: Offline Points: 9	Post Options Post Reply Quote SAKKIE Report Post Thanks(0) Quote Reply Topic: RELOADING THE .303 WITH SOUTH AFRICAN POWDERS Posted: November 18 2019 at 3:08am
	I have no 1 mk 4 Lee Enfield with a 21 inch 2 groove barrel. My loads with South African propellant powder S355 are as follows. Load no 1: 40.5 grain S355 South African powder behind a 180 grain Sierra Pro Hunter bullet , Large Rifle Magnum primer , PMP case and overall cartridge length 78mm. Group at 100 meter was 1.25 inch and at 200 meter 1.5 inch. Average velocity is 2397 fps. No sign of high pressure on case or primer. Load no 2 : 41.5 grain S355 South African powder behind a 180 grain Sierra Pro Hunter bullet , Large Rifle Magnum primer , PMP case and overall cartridge length 78 mm. Group at 100 meter was 1.0 inch and at 200 meter 1.5 inch. Average velocity is 2472 fps and again no sign of high pressure on the case or primer. This is super for me and I suggest you start at lower loads and work up slowly to my velocities.
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philtno Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: May 04 2019 Location: Blenheim, NZ Status: Offline Points: 245	Post Options Post Reply Quote philtno Report Post Thanks(0) Quote Reply Posted: November 20 2019 at 12:21pm
	Hi and welcome. Any idea about what that SA powder could be related to?? I mean, what could it be similar to by Hodgdon or IMR or Alliant?? Cheers Philtno

SAKKIE Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: November 18 2019 Location: Upington South Status: Offline Points: 9	Post Options Post Reply Quote SAKKIE Report Post Thanks(1) Quote Reply Posted: November 20 2019 at 10:25pm
	Good Morning Philtno, According to a South African site S355 is nearest similar to Norma 203B . However the Norma is somewhat slower. It is wise to start about 5% lower and work it up. Somchem suggests 37.8 gr S355 start load for the 180gr Sierra Pro Hunter +- 2150 fps 42.0 gr S355 max load for 180 gr Sierra Pro Hunter +- 2450 fps These are for the .303 British Rifle. Hope it will help. Regards Sakkie
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