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> 6.5 x 47 Lapua
6.5 x 47 Lapua
@ 10:27 pm (GMT) |
Brendon HearnHi,I'm interested in your opinion on the cartridge and if you have done any load development on any. As a background, I had wanted to build a rifle for a while. Something to shoot lond range rabbits and hares, and capable of shooting anything up to medium sized game. I had read a lot about the 6mmbr, and was almost sold, but didn't think it was going to have quite enough grunt. I decidied that I'd go for the 6.5 x 47 L, with larger projectiles and a bit more case capacity. I built the following, Rem 700 ADL, trued action and sleeved bolt, trueflight #3 contour barrel 1 in 8 22" long, factory wooden stock (partially bedded). To date, all good, with results on rabbits, hares and fallow. I have only done limited load development with 120gr Prohunter, 123gr Scenar, 123gr Amax. Hoping to do some more load work soon. Happy with results to 200m, and want to stretch it out to 400m, where I know I'll hit what is in the cross hairs, if I do my part. Eventually further, but I don;t get too may chances over that. cheers |
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@ 12:35 pm (GMT) |
Nathan FosterRe: 6.5 x 47 LapuaHi Brendon, I have had very little experience with the 6.5x47 other than talking to shooters using it in competition.As a varminting cartridge, it seems a very good choice when loaded with the A-Max. As a Fallow deer hunting cartridge, again, the A-max is the best choice if you want to push shots out long. You will however find that you reach a point where the energy is very low, depending on your load this will be out between 500-650 yards. Beyond this range, you may find that killing is not nearly as fast as it is at closer ranges. Keeping field records / autopsy photos and monitoring speed of killing versus shot placement is the key. I have tried to explain some of the fundamentals of long range wounding within the knowledge base but have been told more than a few times that I need to write a separate article about this. The below explanation should help a bit: As velocities fall below 2400fps, controlled expanding projectiles gradually lose the ability to create disproportionate to calibre wounding. In other words, wound channels are proportionate in diameter, to the expanded diameter of the projectile. Wounding gradually subsides from a fast killing 2" or 3" internal wound to (for example) .75" at around 400 yards, then down to .5" at 500 yards and so forth. The smaller the wound, the slower the kill. In order to effect a wide wound in the absence of high velocity at long ranges, the projectile must be capable of fragmenting rather than producing traditional controlled expansion. Fragmentory wounding is the key phrase. For best performance, the cluster of fragments must be large enough to give sufficient penetration. Naturally, a heavy frangible bullet will produce a large cluster. A large projectile cluster has a greater chance of producing fast killing by destroying not just the heart/lungs but if the shot strays back, it will have the capacity to destroy the liver and arterial/venous system. The smaller the caliber and lighter the bullet, the smaller the cluster of fragments. It is up to you to monitor how this translates to your local deer body weights. If you find that wounding is somewhat limited and that kills are slow at extended ranges, the options are, either set a maximum range for your cartridge or move to a more potent cartridge / wider caliber / heavier frangible bullet etc. If you want the full article pertaining to the above text, it was published in NZ Outdoor Magazine, Feb issue (this week). |
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@ 05:08 pm (GMT) |
Brendon HearnRe: 6.5 x 47 LapuaNathan,thanks for the reply. The idea of a rifle in 6.5 x 47 Lapua, was some thing to cover a few bases, without being for a specific task. It is still earliy days, but is going ok so far. I'm yet to try the Amax out on deer, and I have no grand ideas of trying to stretch this caliber too far. 500m would be an absolute max, once a suitable load is finalised. Probably more like 400m :). As I put in the original post, I want to try and get my shooting and the calibers / rifles potential to the point where, if the target is in range, it is going to get hit. Isn't it just that easy ;) . As I likr to say, "Good luck, is the result of hard work." cheers |
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@ 06:50 pm (GMT) |
Nathan FosterRe: 6.5 x 47 LapuaThats a good saying, right on the money. |
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