马马虎虎计算了一下54的【其实很没有意义，传统气枪威力都不大】

威力的确比M1911大一点，比77大一半
这是77的

这货也只能欺负这些了，被盒子炮完爆的货

Power of the Girandoni Air Rifle
Because of the sophisticated nature of the flat mainspring and the timed release mechanism, Baker and Currie (2002) suggest that the Girandoni system is capable of much greater power than air rifles of less advanced design (such as the Lukens air rifles). As of May 2003 they were only willing to indicate that this system could project a lead ball, of about one-half inch diameter, of about 210 grains to a muzzle velocity of at least 500 fps for about 117 ft. lbs. of muzzle energy. Colin Currie reported (personal communication May 18, 2003) that the Royal Armories of Leeds, England recently charged the Heiberger .433 caliber air rifle, a formerly single shot air rifle made about 1750 but converted to a 23 shot Girandoni-style repeating system[10], apparently in the early to mid-1800s, to about 800 lbs/sq. inch and achieved a muzzle velocity of over 900 fps with balls of 120.4 grains for a muzzle energy of 217 ft. lbs. He reported that 1500 strokes were needed to pump up the Heiberger‘s buttstock reservoir to operating pressure after 20 shots had been fired from one charging/loading.
用120格令轻弹换取动能也就是217ftlbs，不到300j哦。看来我那个13g球形弹，270m/s是搞古多了（其实这个速度是我用450焦耳推算出来的的，，，当然和.45差不多）

800psi，也就折合6.7mpa吧？
这是猎友网站的文章总结世界主流pcp压力20mpa左右。
这类pcp射击口径4.5mm的0.6g轻弹时速度282m/s，动能24焦耳。阀门开口3.5
。
射击口径5.5mm的1.8g重弹是速度298m/s，动能80焦耳，阀门开口4.8。
呵呵呵呵呵呵呵呵呵呵呵呵呵呵呵呵呵呵，大家看明白了吧？5mpa的压力推动13g的重弹头比人家现在顶尖pcp用20mpa的膛压推动1.8g的弹头初速相差不多？哈哈哈，古人真是搞笑。
咱们接着看，好像推算出的弹头初速和重量与.45acp也相差不多啊、
风之神枪12.9g弹头重，初速264m/s（推算的，其实没这么大的）
我大.45acp弹头差不多15g，初速大约250m/s，惊人的相似啊我操。
Bullet diameter .451 in (11.5 mm)
Neck diameter .473 in (12.0 mm)
Base diameter .476 in (12.1 mm)
Rim diameter .480 in (12.2 mm)
Case length .898 in (22.8 mm)
Overall length 1.260 in (32.0 mm)
Case capacity 25 gr H2O (1.625 cm³)
Rifling twist 1 in 16 in (406 mm)
Primer type Large pistol
Maximum pressure 21,000 psi (140 MPa)
哈哈，5mpa和140mpa的效果这新差不多啊。