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6.5mm copper monos for Elk - LRX vs CX vs E-tip vs CEB vs Hammer vs Lehigh
- Thread starter western living
- Start date
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https://photos.app.goo.gl/xXw3ZYfbZUHRn
Still learning new technology on posting pics.
Our inside vivint panel shows -24 on panel and out out side thermometers show similar temps.
It's cool in the Helena Valley.
We have low temps due to temp inversion.
I wish I know how to show pics but don't.
Old Rooster
Still learning new technology on posting pics.
Our inside vivint panel shows -24 on panel and out out side thermometers show similar temps.
It's cool in the Helena Valley.
We have low temps due to temp inversion.
I wish I know how to show pics but don't.
Old Rooster
Last edited:
There was a theory I read somewhere that Ive never been able to find more info on. But the idea was between the same bullets except one fully mushrooms (TTSX) and one that sheds petals (Hammer) the one that sheds petals would penetrate deeper because of the fact it shed some weight to match its reduction in velocity as it travels thru.
I cant recall if that was some random forum comment or where I read that but maybe someone could validate that. Seems plausible.
What hammer were you using? Do you know what the approximate impact velocity was on the 600yd shots. That's pretty sweet!
HARPERC
Well-Known Member
Some of us prefer an Sg of 2 for terminal performance.
The 1.5 aids in keeping bullet point on at impact, which in turn aids in expansion as advertised, and a longer wound channel due to maintaining a straighter line.
In my experience absent measuring twist rates are often mis stated. I'd start with the 118 HHT.
I prefer the nose coming off, over a classic mushroom. You will see more penetration, and keeping the velocity higher through the animal typically better wound channels.
Best wishes
HARPERC
Well-Known Member
Up to a point, generally its tough to make up the difference. Play with the various ballistic calculators on line to get an idea of what to expect from specifics.
snox801
Well-Known Member
I'm using the 123gr absolute hammer. Guy i loaded same bullet for last year shot his big bull at 683 yards it stood like it wasn't hit for a second then tipped over dead. He had a longer barrel than me and was starting with a faster speed.
I was at 2145fps according to my app load app at 608.
western living
Member
I've used the Berger calculator, but it is not using the Miller formula. From what I can tell, Berger is primarily interested in calculating the loss of BC from their calculated Sg.
If I put a reasonable muzzle velocity of 3200 fps into the Berger calc at 5000 feet with a temp of 0 deg. F, I get an Sg of 1.28 which indicates I would be losing 7% of the BC. Instead of a BC of .468, I'd be getting .437 -- still better than Barne's 120 grain TTSX at .412
I won't know without testing, but I don't believe I'd get bullets keyholing under the above conditions. What I don't know and can't easily test is what I'd see with terminal performance.
Using the Miller formula under the same exact parameters - same bullet, same specs, 5000 feet and 0 deg. F, 3200 fps -- I get an Sg of 1.752. If I make conditions worse, 4000 feet, -5 deg. F, I still get a Miller-formula Sg of 1.666
| Stability | |||
| Input Data | |||
| Caliber: | 0.264 in | Bullet Weight: | 127.0 gr |
| Bullet Length: | 1.402 in | Plastic Tip Length: | 0.199 in |
| Muzzle Velocity: | 3200.0 ft/s | Barrel Twist: | 9.0 in |
| Temperature: | -5.0 °F | Pressure: | 25.37 in Hg |
| Output Data | |||
| Stability: | 1.666 |
I'm not just wanting to argue calculator results. I can see the Sg results for myself. The question is: how will Sg affect terminal performance?
According to Hammer, they're essentially saying that I need an Sg of 1.9 to get good terminal performance with their bullets -- they say a Miller-formula Sg of 1.5 at sea-level, which would result in a Miller-formula Sg of 1.9 where I live (and even higher where I hunt).
If that's the case with Hammer bullets, what kind of Sg would I need to expect good performance from expanding bullets like TTSX, LRX, CX?
I say go for it then.
I think your putting too much thought into this.
Pick a bullet and make a load for it and go hunt. The bullets your looking at all are good.
X-2
Opinions??????? Theoretical facts & figures, wow, Really? How long has Barnes been around, how much game has been killed with Barnes bullets? Much longer than your Hammer & etc!!! I just don't understand all of the Barnes bashers on this site, at least it seems to me like it. I'll take a Barnes any day over your other copper mono bullets! They're as successful, & more than most, as any bullet out there in the last 40 years or more. They do have a PROVEN track record, they wouldn't have been around as long as they have if not, search it for yourself. Enuf said. Sorry, didn't mean to offend anyone, but just had to give my 2 cents worth & that's probably all it's worth.
