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303 Brit formula

mond
Have any you guys a good formula for the 303 Brit cal, using 125g or 150g heads .

im on Vit 120 at 44g , with 125g head & groupd are 4" at best over 100yds..i could do with getting it down to 2" regular.

I have some IMR 3130 to play with. What the recepie guys ??
Regards
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Comments

3 comments

Date Votes
  • Old-Colts
    Long ago I used to reload for a Model 1895 SRC chambered for the 303 British cartridge. If someone else isn't able to provide some information; I'll see if I can dig up some of my old reloading data.
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  • sandwarrior
    mond,

    38-41 gr. of 3031 for a 150 boolit and 35-38 gr. for a 180 gr. boolit.

    ...or is that boolito??

    Also, what I use is 40 gr. of good ol' red, white, and blue H4895. 40 gr. behind a 150 gr. bullet gives it just over 2700 in my S Mk4 no.1 (I may have that backwards).

    FWIW, that ain't bad accuracy with that rifle...BTW.
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  • mond
    Thanks guys [:)]
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