GTA
All Springer/NP/PCP Air Gun Discussion General => Projectiles => Boolit and Pellet Casting => Topic started by: jkingsouthafrica on April 04, 2019, 09:48:51 AM
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This is the new 2019 AAO Single cavity mold Clone of the Benjamin Nosler bullet this is identical except that this has a solid/flat base and weighs in at 153 grains and is slightly heavier We also make this in a double cavity mold
https://youtu.be/OfXm-5t421g
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When you say 'clone' are there going to be the plastic ballistic tips like the Nosler's have available for purchase too?
So this is also like the NOE 357-150-FN http://noebulletmolds.com/NV/product_info.php?cPath=35_299&products_id=2280 (http://noebulletmolds.com/NV/product_info.php?cPath=35_299&products_id=2280)?
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When you say 'clone' are there going to be the plastic ballistic tips like the Nosler's have available for purchase too?
So this is also like the NOE 357-150-FN http://noebulletmolds.com/NV/product_info.php?cPath=35_299&products_id=2280 (http://noebulletmolds.com/NV/product_info.php?cPath=35_299&products_id=2280)?
No as Steel Ball Barings are just as effective
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Like this perhaps:
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Like this perhaps:
Unless the bearing drops off when loading, I saw one rimfire barrel with a bulge after that happened.
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I'd opt for small lead shot rather and introduce steel into my barrel.
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A plastic airsoft bb might work ???
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A plastic airsoft bb might work ???
Or fill the cavity with grease or wax.
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Just some FYI - back in the late 80's I tested both lead and jacketed pistol bullets for expansion enhancing techniques.
This is about terminal ballistics only!
Summary -What I found after doing all the testing was "Just leave well enough alone" and "Trick bullets are just a trick, the old fashioned HP (properly sized/shaped) was the best for CONSISTANT, RELIABLE expansion". I also learned that MASS/BULLET WEIGHT was the best bone penitration aid. Plus bigger calibur was better better at lower velocities!!!!
It's counterintuitive, but most things put into a HP just make the bullet act like a solid. An example is see where layers of blue jean material pack a hollow point and it does not expand as shown in police shooting and self defense reports. Lots of manufacturers sell tipped pistol bullets (rifle bullets are entirely different performance) but that just because people want to buy the most modern 'thing/gimmick' and if you pull them/tips and test with and without, the without preforms just as well if not a bit better. Not talking the tipped pellets here.
I actually went to the trouble and expense of buying several 50 pound drums of ballistic gelatin powder and mixed and refrigerated it in molds correctly. I also went to a local butcher (many times) who processed from local herds and bought cow shoulder blades for shooting through bone.
I used steel ball bearings, plastic pellets, petrolium wax, silicone rubber and even both live and fired primers and in both cases tried with and without a 2.0 charge of Bullseye powder underneath. Then tried filling the cavity with Ffffg black powder as an alternate. Hint: I NEVER got more than 1% to seem to 'fire' and the couple that did literally blew a crater on the surface and did not even penetrate the bone! And this was with a Hornady 170gr JHC at +P... The unmodified ones did great by the way!
I used a 2" barreled.38 Special and an 8" .41 Magnum (mounted in a Ransom Rest, 15 feet from the 'target') and obviously I reload and tried from low sub-sonic (650 FPS range) to +P loads. Since I really wanted to give an accurate test this was not just one shot each, each variation got 20 bullets prepaired and overall my records showed I fired over 700 shots. Each test started with unmodified bullets as a control to show exactly what the modifications were doing.
I worked on this as my 'hobby' for almost two years.
For the bone tests, I put a 2" slab of gel in front of the bone then a block 14" long behind it but so many shots fully penitrated this caused me to make my first water stop with a long box (16x16x48) whose front and back sides was a sheet of visquene plastic and the box was filled with water. It was placed two feet behind the gelatin target and worked. A piece of marine tape quickly applied to the bullet hole in the plastic sealed the leaking water. Bullets were easily recovered, just reach down and pick them up (or the fragments, haha) from the bottom.
I had no camera back then like I do now so I just made measurements of the permenant cavities and notes on what I observed. Now I have two GoPro Blacks and shoot at 240 FPS in my testing. This type of past experience helped me develop my bullet, the http://noebulletmolds.com/NV/index.php?cPath=35_590 (http://noebulletmolds.com/NV/index.php?cPath=35_590) which I notice has sold all but one of it's production run 😊
During all this testing, I also made different HP pin profiles to test different shapes and depths and learned a lot.
Opinions are like butt holes, everybody's got one but my 'opinion' on this is based on actual testing, not just hypothetical belief, a one shot indeterminate test, fluke or hearsay.
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It is Superglued and crimped although the pictured one doesn't show it and was mainly created just because I could. Not saying it would serve any purpose at all but it does hit HARD. lol.