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21-04-2015, 19:09 #11
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- Jul 2010
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- Witbank
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Re: Re-loading data for the Westley Richards Martini Henry .450/577
Minerva10210
Thank you very much for uploading the video, I really think it is an excellent video regarding the re-loading of the Martini Henry round...it certainly gives a detailed description...thank you again for input from other members as well...
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21-04-2015, 22:26 #12
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- Dec 2009
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- Vereeniging
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23-04-2015, 13:36 #13
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- Mar 2011
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- West Rand, Gauteng
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- 74
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- 2,641
Re: Re-loading data for the Westley Richards Martini Henry .450/577
Interesting - thanks Drie
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24-04-2015, 18:17 #14
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- Sep 2009
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- 53
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- 579
Re: Re-loading data for the Westley Richards Martini Henry .450/577
With turned cases; you are duplicating the 45-70 cartridge; which is proven to be the better cartridge (BP cartridges don't like severe shoulders.). The rifling twist of the two guns differ with but 1 inch (22 v 23) with a very slight difference in bullet diameter. I load my MH with turned cases and use 45-70 charges (70 grs Wano 2F) and 405 gr bullet (also a 350gr bullet) which I re size in a .45 acp bullet sizing die (Lee) to .452. Excellent results over short to medium ranges (up to 200m).
For any favor; don't use smokeless powder in the MH. You will bend the gun.
With turned cases, you need to slightly change the profile of the top of the breech block; this so the breech block does not rub against the primer; which should be flush with the case. Original primers were slightly recessed.
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21-03-2016, 19:33 #15
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- Mar 2016
- Location
- Pretoria
- Posts
- 1,389
Re: Re-loading data for the Westley Richards Martini Henry .450/577
I recently formed cases from 24gauge cbc brass with just MH Lee sizing die. Cumbersome but possible.
trimmed cases to 59 mm. OAL of the round 79mm. 75 grains of blackpowder behind a 460 grain cast bullet. Work a whole lot better than the turned cases. Also can use large rifle primers where in the turned cases I had to use large pistol primers.
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21-03-2016, 19:55 #16
- Join Date
- Oct 2012
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- Struisbaai/Pretoria
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- 61
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- 180
Re: Re-loading data for the Westley Richards Martini Henry .450/577
I use 38 gr S355 and a 445gr bullet in turned brass, works well with typical gentle push recoil.
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21-03-2016, 20:10 #17
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- Dec 2009
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- Vereeniging
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- 70
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- 5,782
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21-03-2016, 20:34 #18
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- Oct 2012
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- Struisbaai/Pretoria
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- 61
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- 180
Re: Re-loading data for the Westley Richards Martini Henry .450/577
3p-Yes but i can not lay my hands on the data. I will check and report back. My friend who made the bullet mould, use this load effectively hitting an standard property advertisement board at 300m.
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22-03-2016, 07:09 #19
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- Mar 2016
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- Pretoria
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22-03-2016, 13:18 #20
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- Oct 2012
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- Struisbaai/Pretoria
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- 61
- Posts
- 180
Re: Re-loading data for the Westley Richards Martini Henry .450/577
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