|
|
|
Discussion Forums
Forum Index
> Rifles general discussion
> 270 accubond long range
270 accubond long range
@ 10:14 am (GMT) |
Jit RathodWhats the experience of this high BC bullet ,Where can I buy accubond long range in 270 in NZ ? Cheers |
Replies
@ 10:52 pm (GMT) |
Nathan FosterRe: 270 accubond long rangeHi Jit, stock comes and goes at Reloaders supplies.Have had some interesting results with this. I am not in total agreement with the design premise but now understand the whys and hows of it. Its taken some time but I now have a good understanding of the LRAB, its strengths and weaknesses. The first thing to understand is that Nosler wanted a bullet that would hold together with close range shots. They wanted controlled expansion. But they also wanted it to open up fast out long. The two don't always work and core bonding makes a bullet that much worse at low velocities. But here is the kicker- their trick was to boost the BC right up high, I mean way higher than others. The ogive section was also made as weak as could be managed. The main factor I want you and others to take away from this post, is that their method was to simply try and avoid low impact velocities completely- by keep the BC high and therefore impact velocities high. For the average cross valley shooter, it works. It is still neither fish nor fowl though. It is not a deep penetrator and sheds quite a bit of weight in close. By the same token, a point is reached where its core bonding hinders long range performance. But it has great merit for certain applications. For a start, if the 6.5 or 7mm LRAB is run in one of Noslers magnums, the bullets can be relied on to perform adequately in close and quite spectacularly out long, most shooters never really seeing what will happen below 2200fps. In the .270, this bullet gives you the BC of an A-Max and (for example) the ability to shoot Red deer in close while being able to reach out from ridge to ridge. This bullet will allow a .270 user to reach out to around 600-650 yards depending on game body weight resistance. Like all core bonded bullets, the LRAB starts to lose performance below 2200fps. At 1800fps, there is a risk of pin hole wounding. The ogive is still weak but it needs a good measure of resistance to force it to bend / fold or expand. This is also reflected in Hornady's ELD-X versus LRAB / VLD tests. The LRAB cannot be relied on at these impact velocities. At mid ranges (a general cross valley shot) where velocity is reasonably high, LRAB performance can be quite spectacular. We see a good mix of weight shedding for energy transfer versus good penetration. The 6.5 cal bullet could be the most useful of the bunch- providing people do not push ranges too far. I hope you can all now understand the hows and whys of this. My only concern is that people see the words Long Range but do not understand the limits of this type of design. I put a fore warning in the cartridges book regarding this and still stand by those statements. |
|
@ 08:03 pm (GMT) |
Jit RathodRe: 270 accubond long rangeNathan, thanks again for a really comprehensive response, I appreciate the time you put into this.With the limited choice of projectiles for 270 cal, I have a 270WSM, what 50-600m bullet would you recommend for typical NZ game. There are a couple which have come to market since the book was written, or should I stick with SST or ABs ? Cheers It |
@ 06:21 pm (GMT) |
Bob WigginsRe: 270 accubond long rangeSounds like if you keep velocity above 2200 fps the Long Range Accubond works just fine. I'm a little concerned at velocities over 3000 fps muzzle velocity you might have a problem up Close. Maybe Nathan will chime in with his thoughts. |
@ 09:08 pm (GMT) |
Bryan WebsterRe: 270 accubond long rangeQuote: Sounds like if you keep velocity above 2200 fps the Long Range Accubond works just fine. I'm a little concerned at velocities over 3000 fps muzzle velocity you might have a problem up Close. Maybe Nathan will chime in with his thoughts.
--------------------- Nathan mentioned: In the .270, this bullet gives you the BC of an A-Max and (for example) the ability to shoot Red deer in close while being able to reach out from ridge to ridge. This bullet will allow a .270 user to reach out to around 600-650 yards depending on game body weight resistance. --------------------- Looks like he said they should work in close given he also said as well as out to 600 yards. |
Please wait
ABOUT USWe are a small, family run business, based out of Taranaki, New Zealand, who specialize in cartridge research and testing, and rifle accurizing.
|
KNOWLEDGEBASE |
KNOWLEDGEBASE |