.338LM
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Everything posted by .338LM
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Lapua have done a good bit of work that is, I believe in the public domain. There is a lot of material that both the UK and US Governments have however, unfortunately it is not in the public domain. Doppler is also useful in matching Magnus effect theory and practical in long range work. Helps to marry up the 'comeup' charts.
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The destabilisation depends very much on the bullet; or for that matter any other projectile, its shape, CofG and the medium it is transiting through. Some bullets have more 'problem' then others. As for Wiki, very good for general and sometimes misleading info but nothing really beats field trials, especially those using Doppler to validate theory. Without stretching the thread too far of line, another area that is a can of misinformation 'worms' is the field of terminal ballistics.
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All of it, depending on to whom you speak.
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Yup, and it would surprise you how few folks are aware of it.
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Quality ammo less so than some. The MPI can change quite considerbly with the change in velocity, bullets rattling around the transonic stage are not the most accurate.
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Did the shot bang or crack? Some subsonic ammo is quite close to being supersonic, especially given the right meteorological conditions and a crack would indicate this. I have found Remington 22subsonic hellish for this.
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Maybe if you spent some time in the sandy places you might change your mind. Believe me, their mindset is centuries apart from ours. The Talibani do not protect the civvies any more than Bin' Laden did, quite the opposite; you disagree with them, you die.
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There has been a lot of work done on the psychology of killing. You would be surprised that when it comes to killing, for some children are no different to adults. Care needs to be taken, just because you do not understand the mindset do not assume that the individual is nuts. Some of the most calculating individuals kill children precisely for this reaction.
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The ultimate irony of this story is that the number of civilians (women and children) killed last week by the Talibani and their devices exceeded by a large margin the numbers killed by this clown. Unfortunately, our left leaning press find it easier to report on one rogue that to report on the various murders that occur daily out there. When it comes to killing women and children the Talibani are masters, little of it is mentioned by the Western press though. As for justice, unlike Europe the Yanks have the ultimate penalty and those under Military law do too. He certainly would not face exe
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To be honest I think the issue with cheap brass is less about accuracy at 'normal' stalking ranges but more about value for money in the amount of times you can reload the brass. The longer the brass lasts, the cheaper each shot. Soft brass can be useless after three reloads, good brass can give you from ten up to forty reloads (calibre dependant). .338LM brass is expensive but I buy lapua. After each firing the brass is annealed and graded carefully. So far they have managed ten reloads with no rejects. I have used privi in .223 and 6.5 and to be honest I find it better than some of the A
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If memory serves me correctly, they burn out at about 50m too. For fun far better to get trace for 7.62 NATO, burn from a cold barrel is 1100M.
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Waste of time to be honest. Used them years ago at work. All they do is leave a very dirty barrel.
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Good brass well looked after will last a lot longer than the cheaper stuff. I anneal all cals after three re-loadings. With the .338 I do it after each firing. That alone makes the brass last longer. If brass is soft, the primer recess begins to expand very quickly and that is the death of any brass
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If you are serious about rangefinders these guys are good: http://www.vectronix.ch/#/en/products/handheld_equipment/rangefinders/rangefinders_day_night
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All laser rangefinders will work in the dark; the issue is more, can you see what you are pinging? Mist, fog, heavy rain and snow are a different kettle of fish. All of these conditions are a result of precipitation between you and the target and, although particle size may vary all will reflect the laser pulse to a greater or lesser degree. You may find that you get a reading but it may be erroneous.
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A note on their performance on live quarry. I will use nothing else when I am dealing with seals around the fish pens. A huge concern is shoot through or ricochets and the A/V max minimises that. As all shots are head shots (my preferred shot on most game) the destructive terminal ballistics ensure that large areas of the brain pan are emptied, result instant death without the problem of shoot through. Further, a miss results in a very large splash, no matter the angle and no ricochets.
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Just miked an Amax, length 20.03mm. They are very stable in a 1:8 twist, although I have had an occasion when one hit a blade of grass a metre from the muzzle and exploded into gray dust!
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In .223 it explodes on impact. In the larger cals it is more useful for game hunting. In NZ it is often used as such.
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I forgot to add, my varget load is 27.5 grains under a 55grain vmax.
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Hi richmcgin. A little on Amax versus Vmax. Amax being designated a target bullet, Vmax being designated an expanding bullet. It is my understanding from speaking to some friends across the pond that these two bullets are in fact one and the same, although in different weights. They are, allegedly made from the same jacket, core and tip material and even the same thickness of jacket. Due to my location, getting Vmax involves a long trip (up to eight hours) to the nearest RDF so did a little research followed by some practical shooting tests. The test involved filling a saline drip bag with
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27.5 Grains of Rel 15 with 52 grain Amax. This is as good (read destructive) as the 50 and 55 grain Vmax without the drama involved in getting Vmax delivered in the post. Varget is very good as well, especially when you have large temperature swings. I cant remember the exact load but will dig it out if required.
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Nothing says they have to be proofed, so I can only think it was for not having it on his ticket. The whole thing is a farce though as there are no serial numbers on my suppressors anyway to link them with the ticket. Some suppressors though, obviously are only made for air rifles, and others are only suitable for rimfires Speaking to an inspector about this very subject. Having to get a variation to get suppressors for three rifles. He said that they were sick of the whole thing. The suppressor has no serial number, you cannot use it without a firearm, if you have a ticket for a firearm
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To be honest it is very easy to come to many conclusions reading his posts, not all if any may be right. Whilst the vagueness and lack of information regarding the reloading data gives cause for concern, it is possibly an error in expression. At the end of the day, messing up a load is much more likely to cause mischief that not knowing what range to zero your rifle at. That being said, a question was asked and I believe it is up to all of us to pass what little knowledge we have to those who may have less. To put someone down for asking basic questions will only stop them asking these often i
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Well done. As to the question why hunt otters, I can answer that. We are plagued by otters, they take the ducks and geese with ease. Within 2Km of my house we have at least three holts. They will get through any security you might want to put in place, I have had a door of 18mm ply with 50x50 frame ripped off the duck shed by a big dog otter. It is theoretically possible to get a licence to kill otters from SNH but I have never heard of anyone getting this mythical ticket. Out here you have to deal with them in the old fashioned way if you want to keep birds.
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Hmm, I thought it was a perfectly reasonable question too. I have seen a great many folks who have not had the benefit of a full and very formal training in ALL aspects of firearms. Some have been superb; conscientious, willing to learn from those who are more experienced and often full of questions. Others on the other hand have been beyond belief; often though, it is those that would tell everyone else what they are doing wrong. I have been in this game for many years and I am still learning and expect to do so until I peg out. In the meantime, if someone asks for advice and I thin
