Did someone say whiskey?
My thoughts on solid copper bullets and in comparison to other bullet types.
- Thread starter Petey308
- Start date
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Aye Sir!
Try sending a text. Less intrusive and leaves him space to review and respond at his convenience.
For a meat hunter, it sounds like mouthfuls of metal powder to me. Hmmm.
@Petey308, as a result of this thread/bullet construction thread, and my lead-free bullet compilation thread, a member offered to do a metal composition analysis of the same bullets I sent you for your analysis. Below is an excerpt (too big to display/lots of columns), I sorted it and displayed copper purity/composition. Anyways, I think this information belongs to your thread instead of starting a new/separate one. I have permission from the member/tester to send the files to you if you want. Test data comprises 7 large files. Let me know if you want it.
| Bruker Nano GmbH, Germany | |
| Quantification results | |
| Mass percent (%) | |
| Date: | |
| Spectrum | Cu |
| BARLRX_308200 21.spx | 99.41 |
| BD2_26125 20.spx | 99.31589 |
| BD2_26125 19.spx | 99.24028 |
| BARLRX_308200 22.spx | 99.17328 |
| CBB308168 17.spx | 99.14582 |
| CBB308168 18.spx | 99.08929 |
| HAM308178 11.spx | 99.07997 |
| HAM25117 15.spx | 99.01849 |
| HAM308178 3.spx | 98.99935 |
| HAM25117 16.spx | 98.89941 |
| HAM308178 12.spx | 98.79048 |
| CYG25117 14.spx | 98.78272 |
| HAM308178 4.spx | 98.72898 |
| CYG25117 13.spx | 98.69757 |
| HAM25117 5.spx | 98.66783 |
| CYG308178 10.spx | 98.64048 |
| HAM25117 6.spx | 98.62495 |
| CYG308178 9.spx | 98.60255 |
| CYG308178 8.spx | 98.55894 |
| BNS308168 29.spx | 96.88887 |
| BNS690 31.spx | 96.53794 |
| BNS308168 30.spx | 96.32752 |
| HORGMX_01 11.spx | 96.22972 |
| HORGMX_01 12.spx | 96.10689 |
| BNS690 32.spx | 95.85589 |
| Cu_std_block_Rh_50kV_399_microAmp_05042022_1 | 93.48453 |
| GMX685 27.spx | 93.33799 |
| GMX685 28.spx | 93.05818 |
| GMX2139 25.spx | 92.13512 |
| GMX2139 26.spx | 91.96168 |
| GSC26110 24.spx | 91.74521 |
| GSC26110 23.spx | 91.35859 |
| stage_blank 7.spx | 0.511236 |
| Mean value: | 94.09108 |
| Std. Abw.: | 17.00668 |
| Std. Abw. rel. [%]: | 18.0747 |
| Conf. interval: | 2.960483 |
Thanks! I'd definitely be interested to have all the rest of that info too
.
codyadams
Well-Known Member
Did he do a hardness test by chance? I know hollow point shape/size/design is also important, but would be interesting to know
Alloy content, cavity size/length, methods of weakening the ogive, hardness, etc definitely determines how it performs and behaves terminally. I'd love to have all that info as well. I wish I had the ability to get it all myself.
Lots of variables factor into terminal behavior. The amount of resistance the bullet encounters upon impact based on shot placement, animal size, and anatomy play a huge part.
But you could make mention of the bullet's designed performance, as is petals separating from the base, peeling back but remain attached, roll back, etc.
Not that I can tell. It's a nondestructive test. I got the bullets back without any damage. I do not know if he has that capability but he was nice enough to offer the much-appreciated test. Hopefully, he will chime in for clarification/elaboration.
ADDED: He is pretty low key but I informed him via email.
Ed
Last edited:
I will send them your way when I get home tonight. Cheers!Thanks! I'd definitely be interested to have all the rest of that info too
Ed
I recall that conversation now via DM on here. I forgot about it and never sent him any samples myself. Looks Like that list is pretty extensive though.
nralifer
Well-Known Member
Comprehensive article for sure. We test expansion of our bullets in 10% clear gel at reduced speeds to see the reliability and degree of expansion. We feel that 10% gel is a fairly stringent test especially at low speed(<2000 fps). The 2 banded Bulldozer bullet you showed had our original 6 petaling hollow point. The attached picture is of a 7mm 160 gr Super Bulldozer 2, having a 5 petal design inside a proprietary shaped ogive which allows for better petal retention at high speed impacts and easier expansion at low speed (<1700 fps) along with the higher BC (G7 0.35). We use C110 copper who ductility we feel is just about right. The aluminum tips are press fit and are designed to loosen and clear the bullet's path, very reliably exposing the large hollow to the incoming flesh or gel. We fully understand how plastic tips can shatter on impact with retention of the stem within the hollow point cavity, thus preventing expansion. The combination of high BC and reliable low impact velocity expansion greatly enhances the effective range of the bullet at moderate to high MVs (2850-3200). Single shot kills on Moose at distances of up to 950 yds are readily possible as we have had customers send us their testimonials. Although we don't recommend such shots, I know of 2 guys who took Texas heart shots at Moose and Elk and fully penetrated the animal. The Elk was shot with a 7 mm bullet at 240Yds and the Moose with a 338 bullet at 35 yds. The most extreme example of penetration occurred in a carging Grizzly within 50 yds using a 275 gr SBD2 bullet. One shot DRT. The hunter's guide was impressed. The bullet hit the bears skull and penetrated all the way into the abdomen. I shot a 700 lb Coastal Black Bear quartering through grass with a 308 Win 150 gr Bulldozer from a 20" barreled rifle at 172 yds. The bullet traveled 32" diagonally through the chest, retained all the petals and lodged at the neck/shoulder junction under the hide. The Bear took one step and collapsed.
