577/450 load data

[762shooter]

Does anyone have any load suggestions for a Martini Henry in 577/450?

Information

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[OLD RSM]

Hi
I use in my MH Mk4 22gr Herco with 325 458 gc 20gr with 420 458 gc cotton ontop of powder. 4in group at 100yds
Cheers

[Curator]

25 grains of SR4759 and the Lee .475-400 bullet made from 1 in 20 tin/lead.

[muzzle flash]

65 gr. double F BP. 3/4" square of waxed paper on top of charge then 16 gr. of cow. and seat a lee 340 gr. .460 dia. hollow base lubed bullet. Shoots very well, but stinks and a pain to clean.

[dogtag]

It's a Black Powder weapon.
I use 75 grns 1F + cotton or kapok filler + wad with a 490 grn Lee bullet.
Big boom, lots of lovely smoke - the way it oughta be !

[RoninPhoenix]

as I am interested in loading that particular round for a lee enfield snider carbine, where are you finding the brass and dies?
thx

[biggles]

Lee sells dies for both Martini Henry 577/450" & Snider Enfield .577".

In the States brass is available from Dixie Gun Works & Buffalo Arms & probably others.

Peter (Burlington, Ont.)

[dogtag]

Do not buy lathe turned brass.
It goes in, but won't come out again.
Also, lathe turned brass for my 43 Spanish, won't even go in !