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  1. Ledzep

    Accessories Yard Sale, L/A T2A, L/A XYLO, MagPul, 300 WM Mags

    Bump, some price reductions. Sold items removed
  2. Ledzep

    What's the difference between Black Hills 5.56x45mm NATO Ammo 77 Grain Open Tip Match and Black Hills MK262 MOD 1-C?

    For the .224 Aeromatch bullets we make cannelured and non-cannelured versions of 69 and 77gr. That is all. Published G1 BC's are always to be taken with a grain of salt. .355 vs .361 is within external factor variation (i.e. what barrel they're shot out of or what powder is used even).
  3. Ledzep

    Ballistic Subject Matter Expert needed

    So the question is basically, "Why doesn't my bullet's exit vector match the centerline of the bore?" ? Some combination of, but not limited to, the following: - In-bore tilt of the projectile - eccentric mass of the projectile - non-uniform twist of the rifling - non- uniform cross section of...
  4. Ledzep

    Hypothetical: 1x fired --> annealed

    I once shot a 20-shot group with a single piece of brass. Fired, annealed (AMP), FL resized, wiped off, trimmed, loaded and fired. This was in our 200yd test tunnel from the fixture. Group was pretty much indistinguishable from 20x virgin cases. The only notable difference was the first...
  5. Ledzep

    Accessories Yard Sale, L/A T2A, L/A XYLO, MagPul, 300 WM Mags

    Bump. Got no response from either person on the Magpul PRS stock. Potentially have an agreement on the XYLO extra pieces, will update as conversation develops.
  6. Ledzep

    Accessories Yard Sale, L/A T2A, L/A XYLO, MagPul, 300 WM Mags

    Weird. I'll try to sort out the PM thing. PM's outbound shortly. ETA: PM should be fixed
  7. Ledzep

    Accessories Yard Sale, L/A T2A, L/A XYLO, MagPul, 300 WM Mags

    Got some stuff sitting around that I'm not using much anymore. I have a Paypal account but I don't know how to use it (use it about once every 8 months) so bear with me. Otherwise happy to take M.O., check, etc... 3. 3x .300 WM 3.850" Accurate Mags. "CIP" Pattern L/A AICS 5 round...
  8. Ledzep

    Geissele GFR Maritime Reconnaissance 6mm arc write up and review

    Had good luck with the 6.5 Outfitters (Rexus now I think) and Maxim bolts. JP we broke a couple of extractors but the lugs held up fine. I smashed and peened and broke several no-name budget bolts, which during the covid shortage was the reason for all of the follow-on testing because I got a...
  9. Ledzep

    Geissele GFR Maritime Reconnaissance 6mm arc write up and review

    Bolts interchange in standard AR-15s. Not sure about reverse compatibility with other bolts but I also don't think you'd want to do that other than in a pinch. The G bolts have been among the best I've tested for durability/longevity.
  10. Ledzep

    Proof Research 22ARC barrel issues

    ~200-250 rounds on my 18" Proof. Might be something to it. I am not one to chase speed and tend to think the 22 ARC is about as much powder as one should put behind a .224" bullet, especially with 1:7" twist... Be curious to learn more about this.
  11. Ledzep

    Suppressors 338ARC AR can choice: 9mm or 338?

    What do you mean by "better"? Noise levels I'd say are similar. Still burning 10-12gr of powder. It's obviously very dependent on the suppressor used but IME something like the TBAC Fly 9 on a 338 ARC is as quiet as most .30 cal (6-7" or longer) cans on a .300 blk. The Fly 9 in short mode is...
  12. Ledzep

    Did Hornady Change 147 ELD-M Bullet?

    It's been several years, about the time of A-Tip release. We kept it quiet while the patent process went through. The only changes to the 147 I can see was the cup that was used, which affected overall length (Both OAL's in his post are from after that change, it was done relatively early in...
  13. Ledzep

    Did Hornady Change 147 ELD-M Bullet?

    There was a change made across the board with ELD-X, ELD-M, CX, and ELD-VT to reduce drag variability. It was simply tip geometry. What Brian Litz saw and posted is 3rd party confirmation that DVRT works. The way our SKU system works, there is zero difference between 26333B (or any other...
  14. Ledzep

    Who Makes the Best Switch Barrel Rifle?

    I have that guy muted, but for the sake of context I uncovered what he posted and was reminded of why... :)
  15. Ledzep

    6 ARC Longevity

    Grendel was selling about 10:1 over 6.8 SPC around the time the 6 ARC was introduced. 6 ARC outsells Grendel by quite a bit. I think it's here for a while.
  16. Ledzep

    Hornady 4DOF ZERO Angle

    I'll have to double check but I'm pretty certain you can use ZA in the 4DoF Kestrel. It is often easier to figure out what the value is in the app, then feed the info through Kestrel Link.
  17. Ledzep

    Hornady 4DOF ZERO Angle

    After you do that, you can verify by putting in 100yd, no wind and see what correction it tells you. In this case it says to impact perfectly dead center you need .06 mils (.22" at 100yd) up and right. So this minor deviation in 100yd "zero" will carry through in every down-range calculation...
  18. Ledzep

    Hornady 4DOF ZERO Angle

    Based off of your target, here's the inputs in 4dof to find your zero angle. The rest of the stuff above this is unique to your load/rifle and I have generic sea level environment.
  19. Ledzep

    Hornady 4DOF ZERO Angle

    When you use "Zero Range", you tell the app that you are perfectly zeroed at 100yd (or whatever distance you put in). This forces the solution to cross elevation= 0 at whatever distance you put in. Simple enough. However, most of the time, if you were to lay down and shoot at 100yd, you would...
  20. Ledzep

    Hornady Lot to lot. 200fps difference?

    Sorry, forgot about this thread. If you pull one I'd be curious if it's 38.3ish gr of a ball powder or 36.5ish grains. Looking at the lot data there was some initial set up that was fast but still under SAAMI MAP in our P&V test barrel and they dropped powder charge to get closer to the...
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