BALLISTIC INSTRUMENT

Shot Placement

Sweep every zero and see where each downrange increment lands — the whole paper-target process, done by math.

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          ↑ IMPORT

OPTIC

USABLE ELEVATION

CLICK VALUE

LOAD

SHOW {{ loadCount }} loads

DRAG MODEL

{{ bcFieldLabel }} MUZZLE (fps) SIGHT HT (in) BULLET (gr)

YOUR ZERO

CANDIDATE ZERO {{ candidate }} {{ distSuffix }}

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RECOMMENDED ZERO · MAX POINT-BLANK

{{ bestZero }} {{ distSuffix }}

{{ bestCount }}/{{ bestTotal }} sweep hits in vital · ±{{ bestDev }} in worst

THE ENGAGEMENT

DISTANCE UNIT

SHOT DISTANCES ({{ distSuffix }})

Drives both pages — the distances you fire at every zero.

START STEP MAX

VITAL ZONE (± in)

GROUP / DISPERSION {{ accMOA }} MOA

CONDITIONS

ENVIRONMENT {{ envBadge }}

Air you'll zero & hunt in. Denser air = more drop.

ALT (ft) TEMP (°F) HUM (%)

            ρ {{ envDens }} kg/m³ · DA {{ envDensAlt }} ft
            reset
          

WIND & DRIFT {{ windBadge }}

Crosswind blows the bullet sideways — shown as a windage hold on top of your zero.

SPEED (mph) FROM (o'clock)

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HOLD UNITS

LONG-RANGE EFFECTS

Spin drift & Coriolis — only matter past ~500 {{ distSuffix }}. Right-hand twist, N. hemisphere.

LATITUDE (°) AZIMUTH (° from N)

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SCOPE · YOUR CANDIDATE DIAL ZERO

Zero {{ dial.zero }} · confirm at {{ dial.confirm }}

COME-UP TO {{ dial.maxLabel }}

{{ dial.cuMax }}

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Come-up is dialed from your zero, within your {{ dial.U }} of usable travel. Confirm the zero on paper at the close distance shown, then dial for distance.

DIAL COME-UP vs DISTANCE

Each line is the elevation you dial from that zero. Above 0 = dial up; below 0 (amber) = bullet rides high, so you'd hold under / dial down. Flatter and staying at-or-above 0 across your range = the cleaner zero.

YOUR CANDIDATE ZERO · POINT-BLANK PERFORMANCE

{{ mpbr.zero }} {{ distSuffix }} zero

SIGHT-IN (NEAR)

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CONFIRM AT (FAR)

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MAX RISE (MID)

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POINT-BLANK

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ZERO CONFIDENCE · TOLERANCE STRESS TEST

If your inputs aren't perfect, does the far point-blank bound (currently {{ robust.farBase }} {{ distSuffix }}) still hold? Each bar spans the far bound as one variable sweeps its tolerance.

TOLERANCE BC ±% MV ±fps SH ±in

SELF-DEFENSE TERMINAL · GEL TEST RESULTS

Measured 10% ballistic-gel penetration vs the FBI 12–18 in window (green band), plus expanded diameter. Pick your carry load, then compare its zero on the targets above.

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EXPAND

              0 in penetration◼ FBI 12–18 in{{ defScaleMax }} in
            

Penetration & expansion measured in 10% ordnance gel by LuckyGunner Labs; muzzle velocity from their test barrel. Terminal results are load- and barrel-specific — your gun may differ.

TERMINAL · RETAINED ENERGY vs DISTANCE

Where each load's energy drops below your game threshold = its effective range. Shaded band = your engagement zone. Save setups to compare cartridges here.

±ft·lbf

effective to {{ c.eff }} · {{ c.muzzle }}

COMPARE

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ZOOM TARGET {{ zoomPct }}% magnifies the target only · scroll row for more →

★ save

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■ green = impact · ○ red = {{ accMOA }} MOA cone · ● orange = zero · green band = ±{{ vital }} in vital zone. Holds shown in {{ holdUnitName }}.

↔ {{ windageCaption }}