I want to shoot some 215 grain cast in my .303 British and I would line to get them moving at 2000 fps. Any suggestions as to powder and charge to get it to that velocity?
I have 2400, 4895, 4227, 3031, 4350
thanks
atr
I want to shoot some 215 grain cast in my .303 British and I would line to get them moving at 2000 fps. Any suggestions as to powder and charge to get it to that velocity?
I have 2400, 4895, 4227, 3031, 4350
thanks
atr
Death to every foe and traitor and hurrah, my boys, for freedom !
If you've got a very good five groove bore then 4895 or 4350 will be your best bet. Start at 28 gr 4895 and work up 'til accuracy goes south or you get the 2000 fps. Also try the 4350 starting at 30 gr and work up to what is acceptable. I use a dacron filler if load density is less than 80%.
Larry Gibson
“Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
― Nikola Tesla
thanks Larry,,,I do have both powders...lets see what happen
atr
Death to every foe and traitor and hurrah, my boys, for freedom !
36 grains of IMR4350 is my go to load for my SMLE.
The old Mk VI with 215 round nose nickel full patch used 31 grains cordite for 2050 in a 25" barrel. IMR 3031 matches cordite grain for grain, but pressure spikes have been reported in larger cases. Not sure how it would perform in smaller cases such as the .303....so I would go with Larry's suggestion.
So as often happens, when these things pop into my head, I end up posting them for historical reference only. Unless one can find a published load that matches.
Last edited by Jungle Dave; 11-13-2023 at 09:55 PM.
I have a custom mould that casts a 190gn and 220gn boolit. The 190gn duplicates the throating required for Mk7 ammunition while the 220gn duplicates throating for the older Mk6 with it's 215gn cuppro-nickle boolit.
Martini Enfield, early LE's and SMLE Mk1 (long tom) shoot best with the longer boolit while later SMLE's Mk3's and Mk4 seem to shoot best with the 190gn boolit. I load 26.5gn of 3031 with 220gn and 28.5gn of 3031 with the lighter boolit.
10 shot benchrested group with an 1896 Martini Enfield. (220gn)
After casting these boolits I use an 8mm (or 32 cal) gas check and use a 0.316 sizer seems to hold on better than using 30 cal ones.
Last edited by Bad Ass Wallace; 11-14-2023 at 03:58 AM.
Hold Still Varmint; while I plugs Yer!
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |