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  • Ballistics in Scotland's Avatar
    Today, 02:47 PM
    My Army and Navy rook rifle went just the opposite way. It had been converted into a .410, and I lined it to .255 Jeffery. It is easily done with the standard .25-20WCF reamer about a tenth of an inch short, if you cut the rim recess separately,...
    32 replies | 964 view(s)
  • Ballistics in Scotland's Avatar
    Today, 12:20 PM
    I believe Three in One oil has been made by different people in different factories or countries, which may account for the varying reports we hear of it. Some light oils rub off surfaces very easily, and lubrication is quite a minor role for WD40....
    21 replies | 360 view(s)
  • Ballistics in Scotland's Avatar
    Today, 12:12 PM
    What kind of method of finding the centre depends on what you want to do with it once found, and that I am not entirely clear about. But do you have a 6.5mm. rifle? If you get one of the laser boresighters which are in the form of a cartridge case?...
    11 replies | 388 view(s)
  • Ballistics in Scotland's Avatar
    Today, 06:27 AM
    Not only that, but with the geometry illustrated, the trigger is going to have to move the bolt backwards against that spring. Another point is, what is your test barrel testing? If it is the safety of very heavy loads, you might prefer to have...
    7 replies | 183 view(s)
  • Ballistics in Scotland's Avatar
    Today, 04:59 AM
    That is a beautiful little rifle, and should be highly practical for its intended purpose. I'd much prefer it to a .22WRM or the .17 rimfires. I think the reference above to weak break-open firearms was to break-open revolvers, and you would have no...
    32 replies | 964 view(s)
  • Ballistics in Scotland's Avatar
    04-24-2017, 09:53 AM
    It might be that slitting the capsules permitted shot to touch the bore. You don't mention how even the pattern was, but I think people exaggerate the risk of a doughnut pattern with a hole in the middle in a rifle. The shot all spin in spirals of...
    14 replies | 640 view(s)
  • Ballistics in Scotland's Avatar
    04-22-2017, 04:03 PM
    You get as secure bedding of the lock in place, with the same convenience, if you have a screw permanently in place at the front end of the lock, engaging with about half a screwhole and head recess in the front of the lockplate.
    2 replies | 162 view(s)
  • Ballistics in Scotland's Avatar
    04-22-2017, 09:13 AM
    More information about the bullet would be useful. I think a hollow-based Minié is likely to work better with any Snider, and especially with the early ones, which were conversions and used the three-grooved barrel with 78in. twist of the...
    7 replies | 576 view(s)
  • Ballistics in Scotland's Avatar
    04-21-2017, 12:12 PM
    Yes, I suppose some of us are at an age where middle age seems worth re-enacting... If it is a starting pistol which doesn't have a bore you are wary of harming, a much smaller amount of aluminium or magnesium powder in the charge should have the...
    7 replies | 315 view(s)
  • Ballistics in Scotland's Avatar
    04-21-2017, 12:05 PM
    Mungo Park the explorer amazed some Africans by shooting a candle through a wooden board, in the days when they were soft tallow. Races have been started successfully with both black and smokeless powder for a long time. I think black is better,...
    7 replies | 315 view(s)
  • Ballistics in Scotland's Avatar
    04-21-2017, 11:18 AM
    This is an intriguing idea. eBay, at least on the UK site, is full of them. There must be a lot of hypochondria about. Note that there is also a slightly smaller diameter in the other half. ...
    14 replies | 640 view(s)
  • Ballistics in Scotland's Avatar
    04-20-2017, 05:54 AM
    A belted magnum case should work well if you care to turn down the belt, and if the rim is wide enough for reliable extraction. An alternative for brass would be the current 6.5x68R, which from RWS is about as durable as brass gets, and cheaper than...
    18 replies | 576 view(s)
  • Ballistics in Scotland's Avatar
    04-20-2017, 04:54 AM
    I recall reading in my grandfather's paper when I was about eight, of an old man who scratched at a sore on his neck, and picked out a Mauser bullet which the army doctor thought had exited forty years before. It was black but uncorroded....
    34 replies | 1283 view(s)
  • Ballistics in Scotland's Avatar
    04-18-2017, 04:47 AM
    You can get an extremely good comparative indication of alloy hardness by casting round balls in two alloys, rolling them gently off a hard shelf, and comparing the size of the flat made by hitting a hard surface. I doubt if any tester that doesn't...
    22 replies | 835 view(s)
  • Ballistics in Scotland's Avatar
    04-16-2017, 07:00 PM
    Yes, that is the composition of Cerrotru, although I only know because I looked it up. http://www.csalloys.com/products-cerrotu-alloy.html One good point is that it doesn't include cadmium, as most of those others mentioned do. When cadmium...
    22 replies | 835 view(s)
  • Ballistics in Scotland's Avatar
    04-16-2017, 11:30 AM
    I think it is pretty well certain that antimony is nowhere near as dangerous as arsenic, and tin not at all. The people who authorise 96% tin for plumbing and kitchenware aren't likely to have stuck their necks out. Olivier le Daim, surgeon to...
    34 replies | 1283 view(s)
  • Ballistics in Scotland's Avatar
    04-16-2017, 07:36 AM
    Not if it has a melting point anything like that of Cerrosafe. There is also an alloy called Cerrobend, which is used to fill the place where you want to bend a metal tube without buckling. But Cerrotrue sounds more like it is for taking casts of...
    22 replies | 835 view(s)
  • Ballistics in Scotland's Avatar
    04-16-2017, 05:59 AM
    Guns like this which have failed, mostly failed from things the user should have been wary of. They haven't suffered much from being unphotographed for the last 130 years.
    24 replies | 902 view(s)
  • Ballistics in Scotland's Avatar
    04-15-2017, 02:30 PM
    In the 1920s the most powerful .45LC load on the market was the full case of black powder. They aren't by any means weak. But that isn't to say you can load to the same performance with smokeless powder. That is a very different proposition. Unless...
    24 replies | 902 view(s)
  • Ballistics in Scotland's Avatar
    04-15-2017, 11:13 AM
    Keyholing is also a function of concentricity, and hardness can have a lot to do with that. In a different context, I tested a .303 barrel with .308 Sierra softpoints, and I found that some would shoot rather accurately, with the rifling engraved...
    19 replies | 808 view(s)
  • Ballistics in Scotland's Avatar
    04-14-2017, 05:53 AM
    I'd agree that if a barrel is to be taken off and rebored, you might as well do it with another barrel you know to be unimpaired by welding. But I'd just stick with this one if the chamber and throat are good. The chances of anything else being...
    39 replies | 1715 view(s)
  • Ballistics in Scotland's Avatar
    04-12-2017, 10:28 AM
    For almost all kinds of single shot, yes, and it should be extremely good. I say almost because there are one or two, such as some small Italian falling-block rifles made in the 1990s, which have even smaller diameter barrel threads than the ¾in....
    11 replies | 509 view(s)
  • Ballistics in Scotland's Avatar
    04-12-2017, 09:58 AM
    I wonder what would be the reaction to someone suggesting Navy-sized grips, if Colt had opted for 1869 Army grips all those years ago?
    42 replies | 1302 view(s)
  • Ballistics in Scotland's Avatar
    04-12-2017, 07:14 AM
    The buyers must have something to do with it. I have a single-beam Redding scale which I haven't used in a few years. I bought a digital scale from China on eBay - and a spare in case of malfunction, at £9.99 each delivered. It weights 20g. to a...
    44 replies | 1482 view(s)
  • Ballistics in Scotland's Avatar
    04-12-2017, 06:12 AM
    You won't go far wrong with Greenhill's formula, which is that for a bullet of approximately the specific gravity of a hard alloy bullet, the bullet length in calibres multiplied by the twist in calibres should equal 150 or less, although in...
    32 replies | 1160 view(s)
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Abbreviations used in Reloading

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