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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
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Bullet stabilization issues? .300 Norma Mag
230 Atip should be Okay in 1:10 (but barely). 250's will not be.- Ledzep
- Post #27
- Forum: Reloading Depot
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Is bullet still stable/accurate after it goes subsonic?
It's been a minute since I looked at this subject. I ran a bunch of 6DoF simulations but the simulations are always subject to the input/boundary conditions vs. reality so it can be difficult to verify if any of it is real trends or just junk data. I think years ago Jayden did a bunch of...- Ledzep
- Post #24
- Forum: ELR - Beyond 1000 Yards
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Swiss K31 Sniper Build
Hey ruin as many as you want to! Just makes mine more valuable :D- Ledzep
- Post #22
- Forum: Vintage Sniper Rifles
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I Spy New Baby Razor G3 4-24
Just when I thought I could be happy with what I had....- Ledzep
- Post #62
- Forum: Observation & Sighting Devices
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The spirit is willing, but the flesh is weak......
Smoke-checked the steel pole holding up the heavy bag doing kicks last night.... Thinking I got off easy :D- Ledzep
- Post #15
- Forum: The Bear Pit
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PRS Talk What’s your favourite backpack
https://hillpeoplegear.com/Products/CategoryID/3- Ledzep
- Post #46
- Forum: Competition Shooting Talk
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Which bipod for PRS and NRL Hunter
Standard single pull Ckye pod. In PRS if you need a double or triple pull someone in the squad will have one. (Most of the time, even when the whole squad thinks they need it.. you don't need it). If you need more height in NRL Hunter, use a tripod with a tac table. It's usually set up to...- Ledzep
- Post #7
- Forum: The Armory
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16-18 inch shorty rifles
Cut the front 16" off of last year's match barrel to get into fresh rifling then whittled a bit on the Bridgeport. It rings every time it gets bumped... lol we'll see if it shoots worth a damn. Should be a good beater coyote truck gun. ETA: Mack Bros Element XLR Atom + Sig folder HS Precision...- Ledzep
- Post #3,999
- Forum: Bolt Action Rifles
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Good morning, let’s see your coffee delivery devices.
- Ledzep
- Post #171
- Forum: The Bear Pit
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Vintage Sniper Rifle Picture Thread
Appropriate piece of laminate tracked down! Also fitted a reproduction mount to the rifle and bolted in a post-war Hensoldt. Figured it has the holes might as well bolt an optic on for looks.- Ledzep
- Post #508
- Forum: Vintage Sniper Rifles
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22arc versus 6 arc
No AR Comp data on file for 75ish gr. projectiles, sorry.- Ledzep
- Post #205
- Forum: Semi-Automatic Rifles
