.577/450 Martini-Henry

C*sull said: Is anyone here reloading this round? I bought a gun two years ago and gathered brass, dies and bullets and it's time to get it running. I have lots of reloading experience with large and old rounds, but none with this round. Anyone have any load data or experiences on what works well. Thanks.

H*adDamage said: I've been collecting supplies to reload this to but have not yet done it. Waiting to see what happens in this tread with interest :)

Sc*nner_66 said: given the price (US $) I can see why you would want t reload...note the load details on the bottom of post Geoff 577/450 Martini Henry Black Powder Ammunition Ammunition / .42-.45 Caliber Item #: AMO577450MHB Your Price: $105.00 / Box of 20 Unit: Box of 20 ($105.00) 2 Boxes of 20 ($204.00) 5 Boxes of 20 ($494.00) We usually ship all in stock items the same day when ordered by 1:30 P.M. Pacific Time. This is currently loaded obsolete black powder ammunition for rifles chambered in 577-450 Martini Henry chambering. These are loaded using properly head stamped boxer primed brass (item#Jam577450MH) and 500 grain RN bullets (item #460500) cast from 20-1 alloy lubed with SPG loaded using 80 grains of black powder.

m*zzle flash said: Love to reload and shoot mine. I use some turned brass, large rifle primers,65GR. of FFG. I put a 1/2" square piece of waxed paper on top of powder then fill the case half way up the neck with cream of wheat then seat bullet with no crimp. I have used bullets that run from 340 gr. to 550 gr. Lee has a bullet mould that drops a hollow based .462 dia. slug that works very well with my Martini. I have to lube the bullets by hand and load them as cast. Due to the turned brass is very thick I find that I have to anneal after every shot. After about 7 rounds fired I start to get a black powder build up at case mouth in chamber which causes some hard chambering. A quick twist of a brush or a pull through and good for another 7 rounds. At 100 meters I have no trouble getting 4" to 6" groups. The gun will shoot 6" high at 100 meters so I bury the front sight in the rear and aim dead center of target. The only down side of shooting this gun is cleaning it.

c*tnthehatt said: Ellwood Epps has drawn brass for the 577/450 now. I use the turned stuff also, lottsa fun! Cat

B*ater said: i load for it. 500 gr lead, 35 grs 5744

nr*t said: www.castboolits.gunloads.com/showthread.php?t=13368 Info there on molds and brass and link to British Militaria forum (post #2) :)

C*sull said: I have some of the turned brass and a few drawn cases. My bore actually slugged out at .458" which is a bonus. It's an old commercial rifle or commercial conversion. Nicely done a long time ago.

j*squin said: Is anyone here reloading this round?... You might try contacting GrantR here on CGN. He's into that stuff pretty seriously. There's also an interesting Norwegian website, svartkrutt.net/english.php, which has an article on shooting the Martini Henry 577/450. Even a short video clip :) Stuart

C*sull said: That's an excellent site, I just checked it out, thanks.

s*nray said: This is for reloadable turned brass with a 70 grain powder capacity. http://lweb.net/tom/577-450.PDF

b*n hunchak said: I believe orig. ammo for this cartridge was loaded with paper patch bullets, at least the orig. ammo I have seen were loaded with a round nose PP bullet.

H*adDamage said: Yes they where PP and this is how I was planning on loading them myself. I need to find some bees wax to make the wads as well. Something else to but it slips my mind right now.

c*tnthehatt said: You can use candle makers wax, available at craft shops... Cat

H*adDamage said: That's a good idea :)

F*nster said: You should really have a look at the British militaria forums. There is a section just for Martini-Henry's with tons of information. There is also a reloaders forum that can give you a lot of info on the 577/450 round. http://p223.ezboard.com/bbritishmilitariaforums Tony

c*tnthehatt said: Yes they where PP and this is how I was planning on loading them myself. I need to find some bees wax to make the wads as well. Something else to but it slips my mind right now. I use teflon pumber's tape for paper patching. Works super, but is not quite on as far as "good play" goes!:popCorn: Cat

s*nray said: "...need to find some bees wax..." Find an apiary. They'll sell you bees wax. Try the Yellow Pages. It's not horrendously expensive either. At least, it wasn't the last time I bought some.

sm*llie said: Everybody seems to load this round using blackpowder, but the commercial companies, including KYNOCH, also loaded it with smokeless, right to the end of production. A powder which is relatively safe in the old blackpowder rifles is SR 4759 if used in a THIRTY-EIGHT PERCENT mode: take the blackp;owder load and multiplyt it times point thirty-eight and that is your smokeless loaing for SR4759..... a 100-grain blackpowder charge computres to 38 of the smokeless, a 50-grain blackpowder charge computes to 19 grains and so forth. This is a good old-timey powder for most of the big blackpowder rounds, works fine in the .43 Mauser also. Just for laughs, I have a friend who is also using it in a 300 Weatherby, with 150-grain Hornadys..... they are coming out at about 1700 ft/sec and shooting teenytinylittle groups. But this old powder does work well in many of the old blackpowder rounds..... ignites perfectly at low loading density, zero residue, it isn't hard on the bore AND it's cheap to shoot. And ya don't gotta do the boiling-water-through-the-barrel trick afterwards, either! Bonus!

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