Search results
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"Over Gassed" AR's Fact or Fiction? Other Perspectives
Yessir, that's a 16" 6 ARC (Midlength I think) with a Gen1 Ultra 5. We've got a couple cameras, that color one in that video above (also see all our new product videos that have gel getting blasted)and a b&w only one that's a few hundred thousand fps capable with reasonable resolution.- Ledzep
- Post #87
- Forum: Semi-Automatic Rifles
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"Over Gassed" AR's Fact or Fiction? Other Perspectives
Generally speaking, the ejection angle is the what you get when you add the ejection vector to the bolt rearward velocity vector. If your ejection vector is assumed to be pretty fixed/standard, then the variable is the rearward bolt velocity vector, and operating gas pressure is one of the main...- Ledzep
- Post #82
- Forum: Semi-Automatic Rifles
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Gunsmithing Bullet tumbling
What does the back end look like? Only thing I can think of is excessive oil trapped in the bullet causing the jacket to pop (maybe? You'd probably see lead spirals out of them at close range on paper), or an insufficient core seat operation so the cores are loosey goosey. That's pretty wild...- Ledzep
- Post #14
- Forum: The Armory
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16-18 inch shorty rifles
I'm a fan. I think Mack Bros do good work, especially for the price. It runs very slick and the weight is true to advertisement. Lighter than other Ti actions I've owned before. The only gripe I have is that it's set up for BDL box and 2.850" COAL so non-binder plate magazines with standard...- Ledzep
- Post #4,090
- Forum: Bolt Action Rifles
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Apparent over pressure from mild load
Ever cleaned carbon fouling out? If you have more than 75-100 rounds since the last carbon cleaning I'd start there.- Ledzep
- Post #11
- Forum: Reloading Depot
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BC Correction
My approach to this, regardless of the software (4DoF is ideal, and I don't just say that because I work at Hornady-- how it works is fundamentally different and better than BC based solvers) is centered around data collection. First and foremost, you must be absolutely positive that your optic...- Ledzep
- Post #2
- Forum: ELR - Beyond 1000 Yards
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16-18 inch shorty rifles
Anything over about 7" is kosher for subs. I think we see like 20-40fps MV gain/loss between 7" and 16" usually. Supersonic might be affected more than that.- Ledzep
- Post #4,082
- Forum: Bolt Action Rifles
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16-18 inch shorty rifles
8.5" .338 ARC with permattach TBAC Magnus. Mack Bros Element and XLR Atom- Ledzep
- Post #4,080
- Forum: Bolt Action Rifles
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Real gunsmiths chime in.
The patch on the reamer will clean up the chatter.- Ledzep
- Post #8
- Forum: The Armory
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"Over Gassed" AR's Fact or Fiction? Other Perspectives
Didn't read the thread but will throw out my experience. First off, I will concede that under-gassing or over-springing or over-weighting the buffer will cause more feed problems than over-gassing. You see this a lot in 3-gun and other comps where guys are trying to run the ragged edge and...- Ledzep
- Post #54
- Forum: Semi-Automatic Rifles
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School me on the Samson/review.
The Samson with all the brass is 11.8lb by itself. Most of the time it's a 23-27 lb complete rifle (barrel length and contour makes up most of the range there). As far as fit and comfort, I love it. Similar to a Manners in that regard. I swapped the brass ARCA rail for aluminum and that...- Ledzep
- Post #10
- Forum: Competition Shooting Talk
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Suppressors Form 4 wait time
Last one I did (a week or two ago) was submitted individual Efile on a Sunday and approved Wednesday morning.- Ledzep
- Post #12,383
- Forum: The Armory
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Suppressor and BC
Yes we have a few examples of that. I'm asking around to make sure if I can share and if I can it will be sanitized so as not to cause any cataclysm. Some designs are definitely worse at increasing drag, but there are other metrics involved (flash, recoil, sound, etc...) so it's not an...- Ledzep
- Post #14
- Forum: The Armory
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Suppressor and BC
I'll dig through the radar folder and see if I can find something they'll let me post publicly.- Ledzep
- Post #10
- Forum: The Armory
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Suppressor and BC
As a related topic, if you make bullets with eccentric mass on purpose (non-concentric jackets, drilled holes, etc...) you see similar effects. I have loosely correlated this to poor dispersion loads, too. The center of rotation isn't about the center of mass or center of form and it causes...- Ledzep
- Post #9
- Forum: The Armory
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Suppressor and BC
The shape doesn't change, but drag is dependent on the orientation of the object to the oncoming airflow. If the bullet is pointed perfectly straight forward to the oncoming airflow it will have certain Cd. If the bullet has .01 degrees AoA (angle of attack) to the oncoming airflow it will...- Ledzep
- Post #7
- Forum: The Armory
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Suppressor and BC
Yes. Muzzle devices are one of the main reasons that the Hornady 4 DoF app has "Axial Form Factor" correction built in as a end-user option. Different brakes and suppressors in conjunction with different barrels, rifling types, twist rates, powders, etc... can all affect the drag of a...- Ledzep
- Post #2
- Forum: The Armory
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Zero angle question
There's no follow-on correction needed after having the app calculate zero angle regardless of base incline. Just so that's clear. However, if you went from a rifle with a 0 MOA base zero angled, then put in a perfectly machined 30 MOA base, you could add 0.5 degrees to your zero angle and...- Ledzep
- Post #15
- Forum: The Armory
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Bullet stabilization issues? .300 Norma Mag
If you ever have questions about stability with Hornady bullets or bullets in the 4DOF library, use 4DoF to check gyro. It uses a physical model of the bullet, not a generalized Miller style formula. Here's the 230 in a 10 twist at sea level. Should shoot groups fine but will probably have...- Ledzep
- Post #30
- Forum: Reloading Depot
