DA Form 8265-12C LFAST Worksheet PDF Download – US Army tank crews rely on precision gunnery to maintain combat readiness. The DA Form 8265-12C, officially titled the Live Fire Accuracy Screening Test (LFAST) Worksheet, is the standardized tool for verifying that an M1A2 Abrams (or similar heavy armor) fire control system delivers accurate first-round hits. Updated in July 2025, this form ensures crews identify and correct ballistic, mechanical, or procedural errors before qualification tables.
If you’re a master gunner, tank commander, or armor crew member searching for the latest DA Form 8265-12C PDF, how to complete the LFAST worksheet, or what the Live Fire Accuracy Screening Test means for Abrams gunnery, this guide has everything you need.
What Is DA Form 8265-12C?
DA Form 8265-12C (JUL 2025) is the official Live Fire Accuracy Screening Test (LFAST) Worksheet published by the US Army. Proponent agency: TRADOC. It is governed by Training Circular (TC) 3-20.31-120, Gunnery: Heavy Tank.
The form records pre-fire checks, live-fire impact data, mean point of impact (MPI) calculations, and any required Discrete Computer Correction Factor (CCF) adjustments. It replaces older zeroing or screening methods and provides a repeatable, data-driven way to confirm that the tank’s ballistic solution, computer correction factors, gun/sight alignment, and boresight are accurate for each ammunition type.
Why the LFAST Matters: Purpose and Importance?
Introduced in 1982 as the fleet-calibration method, the Live Fire Accuracy Screening Test confirms that a tank can consistently place rounds on target before crews fire full gunnery tables. It catches:
- Fixed bias (parallax, software)
- Variable bias (boresight error, cant, crosswind, muzzle velocity)
- Random errors (gunner lay, dispersion)
Crew error accounts for approximately 95% of screening failures, making proper execution of the worksheet critical. Passing LFAST ensures first-round hit probability—the difference between mission success and wasted ammunition in high-intensity combat.
Recent 2025 updates in TC 3-20.31-120 refined procedures for both Abrams and Bradley platforms, including standardized range and target panel use.
U.S. Army M1A2 Abrams tank crews conduct Live Fire Accuracy Screening Tests (LFAST) to validate fire control systems before qualification.
Who Uses DA Form 8265-12C?
- Abrams tank crews (M1A2 series)
- Master gunners and experienced tank commanders/gunners
- Armor battalions and cavalry squadrons during gunnery training cycles
- Units preparing for Iron Heroes, gunnery qualification, or deployment readiness exercises
It is used at major training areas such as Dona Ana Range Complex, Bemowo Piskie Training Area (Poland), and others across the Army.
How to Complete the DA Form 8265-12C LFAST Worksheet? (Step-by-Step)
The form is designed for clear, sequential use on the range. Here are the main sections:
- Administrative Data (Blocks 1–8)
- Unit, bumper number, vehicle name/type
- Date, panel type (usually ST-5), range (typically 1,500–1,600 meters), accuracy standard
- Pre-Screening Confirmation
- Verify all auto inputs active (no GCP keys illuminated)
- Fire control mode = NORMAL
- GPS magnification = 10x
- Correct ammunition indexed and loaded
- Gun select switch to MAIN
- Method of engagement (power controls or manual)
Tower command: “ANNOUNCE METHOD OF ENGAGING… USING POWER CONTROLS, MAKE A ‘G’ PATTERN WITH THE LAST MOVEMENT IN ELEVATION TO THE CENTER POINT OF AIM ON PANEL, LASE TO THE TARGET.”
- Action Alpha – Initial Screening (Rounds 1–3)
- Record impact azimuth (AZ) and elevation (EL) for each round
- Calculate total deviation and Mean Point of Impact (MPI) in mils
- Determine if Discrete CCF is required
- Discrete CCF & Confirmation (Rounds 4–5)
- Fire Round 4 as the Discrete Zero
- Fire Round 5 at confirmation distance
- Record ammunition lot data, DODIC, model/subdesignation
- Proofing Team Section
- Used if any round falls outside tolerance, misses, or is doubtful
- Crew clears weapons; proofing team inspects for mechanical/procedural errors
- Firing Data by Round Type & Remarks (Action Echo/Foxtrot repeats process for additional ammunition types)
Tip: Always measure impacts precisely. Convert inches to mils using the provided formulas on the form (divide by 2.54 for cm, then by 1/10th of range).
Official Download: DA Form 8265-12C PDF
Download the latest fillable DA Form 8265-12C (JUL 2025) directly from the Army Publishing Directorate:
→ Download DA FORM 8265-12C LFAST Worksheet PDF
This is the authoritative, e-file version hosted at armypubs.army.mil. Always use the current edition to remain compliant with TC 3-20.31-120.
Frequently Asked Questions (FAQs)
Q: What is the difference between LFAST and traditional zeroing?
A: LFAST uses live main-gun rounds against a standardized ST-5 panel at distance to verify the entire ballistic solution and CCF, whereas older methods focused only on boresight zero.
Q: How many rounds does LFAST typically require?
A: Minimum 3 rounds per ammunition type. If MPI is outside tolerance, add 2 more (Discrete CCF + confirmation).
Q: Can Bradley crews use DA Form 8265-12C?
A: Yes – 2025 updates to TC 3-20.31-120 extended standardized LFAST procedures to Bradley platforms as well.
Q: Where can I find training on the form?
A: Reference TC 3-20.31-120 (Gunnery: Heavy Tank) and unit master gunner programs. Many armor units publish range SOPs based on this circular.
Q: Is the form fillable?
A: Yes – the official PDF is electronically fillable and designed for digital or printed use on the range.
Stay Mission-Ready with Accurate Gunnery Documentation
The DA Form 8265-12C Live Fire Accuracy Screening Test Worksheet is more than paperwork—it’s a proven system that keeps Abrams tanks lethal and crews confident. Whether you’re preparing for your next gunnery rotation or validating systems after maintenance, this form ensures every round counts.