Load data for .220 Swift + .223 | 55gr | Merlin Virtus

.220 Swift cartridge drawing
Virtus logo

Load Specifications

Bullet Manufacturer:Virtus
Bullet Weight:55 gr
Bullet Diameter:0.223"
Bullet Length:<<locked>>
Case Length (l3):2.205"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:47 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:10.0

Load data in caliber .220 Swift with .223 | 55gr | Merlin Virtus bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Hodgdon CFE223 and Hodgdon LEVERevolution.

Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.

Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.

Charge: Powder weight in grains. Start with the minimum load and work up carefully.

FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.

MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.

V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.

z (Powder Burn): Estimated propellant combustion percentage at bullet exit.

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Max Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>90%54,418 psi87%3589 fps100%
Accurate 2200<<locked>>82%54,853 psi88%3694 fps96.9%
Accurate 2230<<locked>>82%55,941 psi90%3701 fps97.5%
Accurate 2460<<locked>>86%53,069 psi85%3599 fps99.7%
Accurate 2495<<locked>>96%54,868 psi88%3645 fps100%
Accurate 2520<<locked>>90%54,737 psi88%3668 fps99.7%
Accurate 4064<<locked>>98%54,708 psi88%3684 fps100%
Accurate LT-30<<locked>>84%54,505 psi87%3533 fps100%
Accurate LT-32<<locked>>84%54,911 psi88%3560 fps99.7%
ADI AR 2206H<<locked>>92%53,911 psi86%3668 fps97.6%
ADI AR 2207<<locked>>82%56,159 psi90%3579 fps100%
ADI AR 2208<<locked>>98%54,911 psi88%3655 fps97.1%
ADI AR 2219<<locked>>84%55,419 psi89%3678 fps100%
ADI Benchmark 8208<<locked>>90%53,301 psi85%3625 fps98.6%
Alliant AR-Comp<<locked>>92%56,318 psi90%3691 fps100%
Alliant Power Pro 1200-R<<locked>>86%54,418 psi87%3753 fps98.2%
Alliant Power Pro 2000-MR<<locked>>94%53,534 psi86%3773 fps96.5%
Alliant Reloder- TS 15.5<<locked>>98%53,853 psi86%3678 fps98.4%
Alliant Reloder-10x<<locked>>86%54,128 psi87%3606 fps100%
Alliant Reloder-15<<locked>>96%55,085 psi88%3707 fps97.3%
Alliant Reloder-17ᴾ<<locked>>100%51,430 psi82%3724 fps97.6%
Baschieri & Pellagri 106<<locked>>84%53,954 psi87%3517 fps100%
Baschieri & Pellagri 107<<locked>>92%54,012 psi87%3675 fps96.5%
Bofors RP3<<locked>>98%54,447 psi87%3698 fps98.6%
Hodgdon Benchmark<<locked>>90%55,332 psi89%3615 fps99.2%
Hodgdon BL-C2<<locked>>92%55,912 psi90%3720 fps99.3%
Hodgdon CFE223<<locked>>88%53,548 psi86%3750 fps97%
Hodgdon H322<<locked>>86%53,592 psi86%3645 fps100%
Hodgdon H335<<locked>>86%54,998 psi88%3668 fps99.9%
Hodgdon H380<<locked>>98%56,173 psi90%3704 fps96.2%
Hodgdon H4895<<locked>>92%54,418 psi87%3684 fps98.2%
Hodgdon LEVERevolution<<locked>>94%52,895 psi85%3704 fps98.4%
Hodgdon TrailBossᴾ<<locked>>100%33,924 psi54%2297 fps100%
Hodgdon VARGET<<locked>>94%55,811 psi89%3688 fps98.4%
IMR 3031<<locked>>92%53,055 psi85%3684 fps100%
IMR 4064<<locked>>96%54,143 psi87%3638 fps97.2%
IMR 4198<<locked>>86%54,679 psi88%3573 fps100%
IMR 4895<<locked>>94%52,866 psi85%3681 fps97.5%
IMR 8208 XBR<<locked>>90%53,301 psi85%3625 fps98.6%
Lovex D073.4<<locked>>82%56,434 psi90%3684 fps99.7%
Lovex D073.5<<locked>>86%53,200 psi85%3609 fps99.2%
Lovex D073.6<<locked>>92%52,721 psi85%3638 fps99.5%
Lovex S060<<locked>>92%54,346 psi87%3593 fps97.7%
Lovex S062<<locked>>96%53,432 psi86%3635 fps98.7%
Norma 200<<locked>>82%54,085 psi87%3579 fps100%
Norma 201<<locked>>94%55,999 psi90%3675 fps99%
Norma 202<<locked>>92%52,924 psi85%3625 fps99.8%
Norma 203B<<locked>>96%54,157 psi87%3691 fps97.7%
Ramshot Big Game<<locked>>96%55,013 psi88%3720 fps97.7%
Ramshot Wild Boar<<locked>>90%52,852 psi85%3642 fps97.4%
Ramshot X-Terminator<<locked>>88%54,578 psi88%3615 fps97.6%
ReloadSwiss RS 14ᴾ<<locked>>100%34,243 psi55%2352 fps100%
ReloadSwiss RS 40<<locked>>86%52,649 psi84%3609 fps99.3%
ReloadSwiss RS 52<<locked>>94%54,853 psi88%3783 fps97.2%
ReloadSwiss RS 60ᴾ<<locked>>100%55,027 psi88%3825 fps99.8%
Rottweil R 901<<locked>>92%56,231 psi90%3665 fps99.9%
Rottweil R 902<<locked>>96%56,144 psi90%3665 fps99%
Rottweil R 903ᴾ<<locked>>100%53,824 psi86%3675 fps98.2%
Shooters World AR Plus<<locked>>82%56,434 psi90%3684 fps99.7%
Shooters World Match Rifle<<locked>>92%52,721 psi85%3638 fps99.5%
Shooters World Precision<<locked>>96%53,432 psi86%3635 fps98.7%
Shooters World Tactical Rifle<<locked>>84%53,026 psi85%3573 fps98.2%
SNPE Vectan BA6 1/2<<locked>>82%54,752 psi88%3264 fps100%
SNPE Vectan SP 10<<locked>>84%55,854 psi90%3681 fps99.9%
SNPE Vectan SP 11<<locked>>98%52,591 psi84%3681 fps97.3%
SNPE Vectan SP 3<<locked>>86%55,332 psi89%3638 fps100%
SNPE Vectan SP 7<<locked>>92%55,405 psi89%3652 fps95.9%
SNPE Vectan SP 9<<locked>>94%55,999 psi90%3694 fps98%
SNPE Vectan Tubal 3000<<locked>>92%54,853 psi88%3570 fps99.9%
SNPE Vectan Tubal 5000<<locked>>98%54,288 psi87%3553 fps100%
Somchem S321<<locked>>88%54,360 psi87%3661 fps98.9%
Somchem S335<<locked>>92%53,780 psi86%3560 fps100%
Somchem S341<<locked>>92%55,274 psi89%3658 fps97.8%
Somchem S355ᴾ<<locked>>100%54,708 psi88%3681 fps98.2%
Vihtavuori N120<<locked>>82%55,999 psi90%3514 fps100%
Vihtavuori N130<<locked>>88%54,578 psi88%3550 fps100%
Vihtavuori N133<<locked>>92%54,708 psi88%3560 fps100%
Vihtavuori N135<<locked>>96%55,143 psi88%3648 fps100%
Vihtavuori N140<<locked>>94%53,592 psi86%3602 fps99.9%
Vihtavuori N150ᴾ<<locked>>100%52,866 psi85%3599 fps98.9%
Vihtavuori N530<<locked>>90%53,925 psi86%3625 fps98.7%
Vihtavuori N540<<locked>>96%55,332 psi89%3648 fps99.9%
Winchester 6.5 StaBALLᴾ<<locked>>100%48,486 psi78%3507 fps97%
Winchester 748<<locked>>90%52,721 psi85%3668 fps99.1%
Winchester StaBALL Match<<locked>>94%55,695 psi89%3704 fps98.4%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%39,407 psi63%3274 fps99.6%
Accurate 2200<<locked>>80%51,300 psi82%3615 fps96.1%
Accurate 2230<<locked>>80%51,808 psi83%3619 fps96.7%
Accurate 2460<<locked>>80%43,047 psi69%3386 fps98.4%
Accurate 2495<<locked>>80%31,502 psi51%3100 fps98.2%
Accurate 2520<<locked>>80%38,174 psi61%3297 fps96.8%
Accurate 4064<<locked>>82%32,039 psi51%3136 fps95.8%
Accurate LT-30<<locked>>80%48,225 psi77%3412 fps99.9%
Accurate LT-32<<locked>>80%48,573 psi78%3432 fps99.1%
ADI AR 2206H<<locked>>86%44,338 psi71%3451 fps95.3%
ADI AR 2207<<locked>>80%52,504 psi84%3517 fps100%
ADI AR 2208<<locked>>94%48,573 psi78%3524 fps95.7%
ADI AR 2219<<locked>>80%47,964 psi77%3530 fps99.8%
ADI Benchmark 8208<<locked>>82%41,017 psi66%3343 fps95.8%
Alliant AR-Comp<<locked>>80%36,767 psi59%3297 fps100%
Alliant Power Pro 1200-R<<locked>>80%44,266 psi71%3520 fps95.9%
Alliant Power Pro 2000-MR39.1 gr92%50,082 psi80%3698 fps95.6%
Alliant Reloder- TS 15.5<<locked>>90%41,611 psi67%3399 fps95.6%
Alliant Reloder-10x<<locked>>80%44,933 psi72%3425 fps100%
Alliant Reloder-15<<locked>>92%48,283 psi77%3563 fps95.8%
Alliant Reloder-17<<locked>>96%44,599 psi72%3560 fps95.7%
Baschieri & Pellagri 106<<locked>>80%47,326 psi76%3392 fps99.9%
Baschieri & Pellagri 107<<locked>>90%50,198 psi80%3596 fps95.6%
Bofors RP3<<locked>>90%41,191 psi66%3399 fps95.6%
Hodgdon Benchmark<<locked>>80%40,509 psi65%3284 fps96.4%
Hodgdon BL-C2<<locked>>82%39,044 psi63%3337 fps95.8%
Hodgdon CFE22336.5 gr84%46,427 psi74%3589 fps95.2%
Hodgdon H322<<locked>>80%43,976 psi71%3442 fps99.4%
Hodgdon H335<<locked>>80%44,788 psi72%3455 fps98.9%
Hodgdon H380<<locked>>96%52,533 psi84%3632 fps95.3%
Hodgdon H4895<<locked>>84%41,800 psi67%3396 fps95.2%
Hodgdon LEVERevolution35.8 gr86%40,190 psi64%3406 fps95.1%
Hodgdon TrailBoss<<locked>>80%24,976 psi40%2054 fps100%
Hodgdon VARGET<<locked>>86%43,265 psi69%3412 fps95.6%
IMR 3031<<locked>>80%35,143 psi56%3268 fps98.3%
IMR 4064<<locked>>92%47,819 psi77%3501 fps95.8%
IMR 4198<<locked>>80%45,774 psi73%3406 fps100%
IMR 4895<<locked>>88%43,308 psi69%3461 fps95.1%
IMR 8208 XBR<<locked>>82%41,017 psi66%3343 fps95.8%
Lovex D073.4<<locked>>80%52,678 psi84%3615 fps99.4%
Lovex D073.5<<locked>>80%42,801 psi69%3379 fps97.3%
Lovex D073.6<<locked>>80%34,519 psi55%3202 fps95.5%
Lovex S060<<locked>>86%44,831 psi72%3386 fps95.6%
Lovex S062<<locked>>86%38,595 psi62%3287 fps95.1%
Norma 200<<locked>>80%50,604 psi81%3514 fps100%
Norma 201<<locked>>84%40,553 psi65%3327 fps95.7%
Norma 202<<locked>>80%35,607 psi57%3215 fps96.7%
Norma 203B<<locked>>90%44,411 psi71%3474 fps95.4%
Ramshot Big Game<<locked>>90%44,367 psi71%3484 fps95%
Ramshot Wild Boar<<locked>>86%46,035 psi74%3494 fps95.7%
Ramshot X-Terminator<<locked>>82%44,802 psi72%3406 fps95.3%
ReloadSwiss RS 14<<locked>>80%25,367 psi41%2110 fps100%
ReloadSwiss RS 40<<locked>>80%43,163 psi69%3399 fps97.8%
ReloadSwiss RS 52<<locked>>90%47,282 psi76%3619 fps95.4%
ReloadSwiss RS 60<<locked>>88%36,376 psi58%3337 fps95.2%
Rottweil R 901<<locked>>80%38,885 psi62%3271 fps97.4%
Rottweil R 902<<locked>>84%38,305 psi61%3258 fps95%
Rottweil R 903<<locked>>92%41,089 psi66%3386 fps95.1%
Shooters World AR Plus<<locked>>80%52,678 psi84%3615 fps99.4%
Shooters World Match Rifle<<locked>>80%34,519 psi55%3202 fps95.5%
Shooters World Precision<<locked>>86%38,595 psi62%3287 fps95.1%
Shooters World Tactical Rifle<<locked>>80%45,992 psi74%3422 fps96.8%
SNPE Vectan BA6 1/2<<locked>>80%52,141 psi84%3222 fps100%
SNPE Vectan SP 10<<locked>>80%48,675 psi78%3537 fps99.4%
SNPE Vectan SP 11<<locked>>94%46,050 psi74%3533 fps95.6%
SNPE Vectan SP 3<<locked>>80%45,832 psi73%3451 fps99.9%
SNPE Vectan SP 7<<locked>>90%51,837 psi83%3579 fps95%
SNPE Vectan SP 9<<locked>>88%45,774 psi73%3478 fps95.7%
SNPE Vectan Tubal 3000<<locked>>80%37,391 psi60%3179 fps97.3%
SNPE Vectan Tubal 5000<<locked>>80%30,516 psi49%2989 fps96%
Somchem S321<<locked>>80%41,133 psi66%3360 fps96.2%
Somchem S335<<locked>>80%36,724 psi59%3176 fps97.9%
Somchem S341<<locked>>86%44,599 psi72%3432 fps95.3%
Somchem S355<<locked>>92%42,221 psi68%3399 fps95.3%
Vihtavuori N120<<locked>>80%52,388 psi84%3455 fps100%
Vihtavuori N130<<locked>>80%42,554 psi68%3307 fps100%
Vihtavuori N133<<locked>>80%37,478 psi60%3196 fps99.3%
Vihtavuori N135<<locked>>80%32,518 psi52%3133 fps98.4%
Vihtavuori N140<<locked>>80%33,446 psi54%3127 fps96.4%
Vihtavuori N150<<locked>>90%37,797 psi61%3255 fps95.5%
Vihtavuori N530<<locked>>82%40,828 psi65%3330 fps95.8%
Vihtavuori N540<<locked>>80%32,343 psi52%3097 fps95.3%
Winchester 6.5 StaBALL<<locked>>96%42,293 psi68%3360 fps95.2%
Winchester 748<<locked>>80%37,173 psi60%3297 fps95.5%
Winchester StaBALL Match<<locked>>86%41,974 psi67%3402 fps95.3%

Recommended = one of the top powders for this cartridge and bullet combination.

ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.

<<locked>> you need an access license to unlock this data.

This overview compares 85 powders for .220 Swift loaded with the .223 | 55gr | Merlin Virtus. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,825 fps; across all powders the maximum-charge window runs from 2,297 fps to 3,825 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.223" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon TrailBoss, ReloadSwiss RS 14 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Power Pro 2000-MR, Hodgdon CFE223, Hodgdon LEVERevolution rank at the top here: for .220 Swift with the .223 | 55gr | Merlin Virtus they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.

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