|
|
|
Discussion Forums
Forum Index
> Precision long range hunting and shooting
> Nosering by David Tubbs
Nosering by David Tubbs
@ 04:28 pm (GMT) |
Brandon MaxwellHi there you all. I hope everyone is getting by. I am pushing the limits again, and I found a product and rushed over here to see if there has been any discussion and couldn't find any. I searches for several different search terms so please forgive me if this is an already run. I remember back, videos of Nathan annealing bullets to increase their frangibility upon impact at lower velocities. Essentially fixing inadequate bullets for the task. Now we have the ELDM which is great....but maybe the door has been reopened for the 190 Bergers and maybe we can improve the performance with even a fantastic bullet like the 180 ELDM. Tubbs came out with a product that is designed to smooth out the drag performance reducing spreads in drag from shot to shot. A side benefit with little effect to the drag performance of the bullet is to increase the lethality. Well I will be ordering one soon but I would like to know if anyone else has monkeyed around with the system yet. Keep'em centered and may you be blessed with single digit SD and ES. For reference I am running the 7mm Practical. Horrible getting H1000 and Retumbo though =(http://www.davidtubb.com/tubb-accuracy-reloading?product_id=232 |
Replies
@ 09:47 am (GMT) |
Scott StruifRe: Nosering by David TubbsHi Brandon. In a recent video about external ballistics, a Hornady ballistician discussed terminal performance of match bullets on game. He was referring to BTHP bullets, not the ELDM. He said they have no built-in means of expansion, such as a polymer tip to drive into the bullet and initiate expansion. He said the way they work is they tumble upon impact, which causes them to upset and come apart. At that point in the discussion he was talking about gyroscopic stability. The faster the twist rate of the barrel, the more gyroscopic stability, and thus the less chance of tumbling when they hit game. This may be why Berger bullets sometimes pencil through without producing the intended effect of coming apart inside the animal. He also said that reduced loads to simulate long-range terminal performance is not valid, because the spin-rate of a full-power load doesn’t decrease significantly at long-range. If you reduce the powder charge to simulate a 1600 fps impact at 100 yards into gel, the result is not realistic because the bullet will be spinning much slower than it would be traveling 1600 fps at 800 yards with a full-power load. Since Hornady went to a great deal of trouble to produce the ELD line of bullets, both with a plastic tip that will initiate expansion, I don’t see how Tubbs’s gizmo would be of much use. But if you want to hunt with a BTHP match bullet from Berger, Hornady, Sierra, or any of the other manufacturers, go for it. It would be a lot easier than annealing, filing a wider meplat, drilling a bigger or deeper hollow point, etc. |
|
@ 09:49 am (GMT) |
Scott StruifRe: Nosering by David TubbsHere’s the video:https://youtu.be/9n0u981umgE |
|
@ 12:43 pm (GMT) |
Brandon MaxwellRe: Nosering by David TubbsI love the eldm. My question was in possibly opening the door to the Berger again. For my 338 Lapua I have some phenomenal loads developed for the 300 grain Berger otm. Not a good choice for hunting. I think that the tool could help bring such a bullet to within the parameters of an effective long range hunting bullet. A paper punch without it. |
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 |