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4DOF inclined fire error

I get wildly different results for inclined fire with 4DOF vs Applied Ballistics Quantum & other calcs.

The 4DOF app provides a solution with much greater difference between flat and angled fire than all other calculators.

Using inputs of
MV 2747
Bullet: Hornady .22 80gr ELDM (using drag model in 4DOF, and g7 bc of .244 in other apps)
1:8 twist
Sight height 42mm
Zero range 100M
target range 600m
Standard atmosphere at 0m ASL
wind 1m/s from 270 deg
target at 600m, flat or -20 deg angle.
elevation correction in mils
azimuth 114 latitude -043

See this table for the results from 4 different solvers:
angles.jpg


Any clever ideas? Has anyone else found this with 4DOF? Real-world results for flat shooting are great for me with 4DOF. However, I've been using AB because the real-world results for angled shots seem to match up better.

Firearms Impact Precision 223 Wylde

Impact precision 737 action RH 90 degree
223 bolt
Brand new spring and firing pin
0 degree OR 15 degree can be included
Redding type s match dies
.247 TIN bushing
2 MDT 10 round magazines
190~ star line brass
40~ 88 gr eldm bullets
bartlein 1/7 twist 29” heavy palma
5/8x24 threaded muzzle
4100 rounds on the barrel shoots excellent chambered 223 wylde

$2100 shipped to your FFL OBO

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Firearms Tikka T3X TAC A1 6.5 CR 24" with Leupold Mark V

For sale: Tikka T3X A1 TAC in 6.5CR, in excellent shape and very well cared for.

This is a .3-.5 MOA gun that has served me well entering PRS. It has approximately 1200 rounds on it. Selling to pay forward a new build. (does not include bipod)

Package Includes:

Category
Component
MSRP Cost
Rifle platformTikka T3X Tac A1 – 24”, R-Hand$2,199.00
BarrellMPA DN5 Muzzle Break (6.5 Cr)$199.00
ScopeLeupold Mark V, 5-25 x 56, PR2 Mil$2,199.00
ScopeLeupold optic and objective lens covers$191.98
ScopeMDT 35" One Piece Mount (1.5")$377.06
MagazinesTikka 6.5cr mag x 4 (2 with rifle + 2 more)$159.98
TriggerBix'n Andy - Dakota Trigger,$254.00
ABR
Longshot precision, RM-Long-ELR(C)
$304.98
GripLongshot precision, Prec-Vertical (RH) + Tikka pistol grip$59.98
ScopeVortex 35mm Bubble Level$39.00
PlatformArea 419 Arca Rail$100.00
CasePelican Vault V730.$211.95


Reference MSRP: $6295.93

Condition:
  • Excellent overall; only minor handling marks (see detailed photos).
  • All adjustment knobs and hardware function perfectly.
  • Includes original mounting hardware and Tikka factory kit.

Pricing: $5,000 OBO (buyer pays shipping to FFL & insurance)

Venmo, PayPal accepted.

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Knives Several Knives - Bark River, Micro Tech, ZT

SOLDNeeves Knife Co. Misdemeanor K390 Titanium new in box and uncarried $200SOLD
Zero Tolerance 0707 Carbon Fiber CPM 20CV only carried a handful of times and appears new $175SOLD
Zero Tolerance 0357 CPM 20CV carried and shows signs of usage,blade in good shape but clip has wear $150
Bark River Bravo 1.25 CPM 3V light use but present as new $220Sold
Micro Tech Socom alpha Mini Warcom partial serrated 93-M11 new in box,may have cut a sheet of paper $225

Please add $10 for shipping, I will cover anything over that. Prefer PayPal for payment. 20250911_145335.jpg20250911_145345.jpg20250911_145406.jpg20250911_145410.jpg20250911_145414.jpg20250911_145441.jpg20250911_145738.jpg20250911_145745.jpg20250911_145757.jpg20250911_150012.jpg20250911_150020.jpg20250911_150030.jpg20250603_065158.jpg20250603_065153.jpg20250603_065139.jpg20250603_065203.jpg20250603_065110.jpg20250603_065104.jpg20250603_065052.jpg20250603_065038.jpg20250603_065035.jpg

Optics Vortex viper HD 5x25x50 ffp

Took scope out of the box and mounted in vortex pro rings. I've fired about 50 rounds under it out to 1050yds. Great glass for the money, tracked perfectly.. It is a ffp with the vmr4 reticle. Has box,paper, tool, etc...Asking $900 with the rings OBO. Selling only to help fund a Nightforce. Yes its still mounted to my deer getter and it was purchased new. Shipped pp ff,venmo,zelle

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Rifle Scopes ExpertVoice Nightforce Prices Unmatched?

Are any vendors on the Hide able to come close to ExpertVoice pricing on the Nightforce ATACR F1 series? Specifically looking at 7-35x and 4-16x in mil-XT--though EV doesn't offer the 4-16x which is unfortunate.

Figured I'd go direct to NF for the 4-16x like I had in the past with the emailed price list, but I believe they're having all mil/LE individuals go through EV now?
  • Haha
Reactions: Huskydriver

Firearms Wts,Wtt,like New 2024 Springfield TRP Classic Commander .45 ,1911

Like the title states
I e got a like New Springfield TRP
2024 manufacturing date
Commander in .45!
This is the newest model with the magwell

Has a FO front site,and Tritium Rear
Comes with box,3 mags,all paperwork
Under 100 rds down range!
Fit and finish is absolutely amazing on the piece!
Frame to slide fit is Perfect 👌
Price is $1200 plus the ride from ffl to ffl

Trades interests are..
All stainless Sig Pistols

HK Stainless USP compact in 9mm or .45

HK P30

Factory built ARs

Snubby 357 mags

°°°°°°I also have a like new Tikka UPR in 6.5 PRC on here for sale
Will trade both on higher end pieces such as 300 prc bolt guns,high end ARs°°°°°

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Walrus Man and the Ultimate NeoCon POS... Indicted.


Piece of shit who turned against MAGA and spent his life screwing America for the MIC.. .

Looks like the Indictments aren't just for commie pieces of shit.

Looks like the DoJ is getting on with the business of AMERCIA... not parties.

Bolton is about to have a tough time on his hands. But the precedent also means that the potato is just as liable for charges.

Sirhr

Firearms Tikka .Ultimate Precision rifle(UPR)

Factory 6.5 PRC ,Tikka Ultimate Precision Rifle(UPR)
Less than 100 rds down range
Has a couple tasteful mods
Salmon river hunter arca/pic rail
Mountain tactical extended mag
3 port brake
Professionally custom camo paint on factory stock
Comes with original box and paperwork

This is the ONLY Factory 6.5 prc UPR I've ever seen in the US!
They dont import them for some reason...
Buttery smooth action!
And easley shoots 1/2 MOA!!

Asking $1500 shipped or will consider trades

Trade interests are...
DW vbob in .45
NH in .45
Factory built ARs in 223 wild,308 and 6.5 CM
Custom or Semi Custom bolt guns in 300 prc,300 wm,6.5 CM,maybe others...
Tactical Shotguns
Proof research MTR

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L42A1 New Build

I have a Genuine L42A1 in absolute pristine condition. It was unfired when i acquired it ...complete with full CES.
I very much enjoy shooting it but decided to keep the round count very low.

As i enjoyed shooting it so much a "Replica" was in order that could be a day to day shooter. Based on a Savage action with all original componets other than the repro scope mount. A genuine Mk3 No32 is fitted.
The barrel is a special order original profiled ( L42A1) from Lothar Walther ....match grade.

Doing some load development using the Sierra Palma 155 ...so far i am over the moon with the results.... below ... some 3 shot groups at 100yds. Awsome results !!!

Its a challenge using the 3x optics...but all part of the enjoyment..

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Accessories 9mm AR Package, Hydraulic Buffer, Colt mags

I set up a 9mm AR a few years ago and worked through getting it as well tuned and smooth shooting as you can get a blow back 9mm AR. It’s very smooth shooting and works reliably with every ammo type I’ve fed it from 115-147 gr. The KynShot hydraulic buffer helped smooth it out a lot and I tried multiple spring weights to find the one that was best. Uses Cold SMG mags and has last round bolt hold open.
I’m just selling it because I decided to buy an MP5 clone.

Since I set it up as an SBR I’m keeping the lower to repurpose and selling a full package to turn a standard AR lower into a reliable and smooth shooting 9mm.

-10.5” New Frontier Armory 9mm Barrel
-New Frontier Armory 9mm BCG
- Slick side AR upper (9mm ARs don’t use forward assist)
- 9” MLOK handguard
- Ambi charging handle
- Mag block for Colt pattern SMG mags. Works with standard AR lower and has last round bolt hold open.
- 5 Qty 32 round Colt pattern SMG mags
- KynSHOT RB5007 hydraulic buffer
- JP smooth polished + power buffer spring.
-9mm muzzle brake and A2 flash hider
- Sig Romeo 5 red dot zeroed at 25 yards

Full package priced to sell: $500 shipped with red dot, $400 without red dot.

I also have a second upper set up with a 4.5” barrel with a 3 lug adapter and a 9” YHM quad rail handguard with Magpul forward grip. I’ll include a KVP 9mm buffer weight and buffer spring with that one. One of the pictures shows it with a Ti Rant 9 mounted to show how it looks with a suppressor mounted. $100 shipped for that upper, BCG not included.
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