Quote:

---

BGRC Howdah Rules
.
Howdah Pistol (Q)
a. Minimum calibre .375
b. Single or double barrel
c. Smooth or ball rifling
d. Min. muzzle energy 1,000 ft lbs
e. Min. 300 grain bullet weight
.
.
300 grs, Energy minimum 1,000 ft lbs. = minimum of 1,225 fps muzzle velocity.
.
Weight of a howdah pistol? 7.2 lbs
.
.
http://www.shooterscalculator.com/recoil-calculator.php
http://www.shooterscalculator.com/bullet-kinetic-energy.php
.
Recoil stats:
.
Bullet Weight:
300
(gr)
Bullet Velocity:
1225
(fps)
Powder Charge Weight:
20 (I used this just as an example)
(gr)
Firearm Weight:
7.2
(lbs)
Recoil Impulse
2.08
(lbs.sec)
Recoil Velocity
9.28
(fps)
Recoil Energy
9.63
(ft.lbf

---

.45 Long Colt 22" barrel (rifle)
300 gr, 22 grs powder, 1550 fps

Bullet Weight:
300
(gr)
Bullet Velocity:
1550
(fps)
Powder Charge Weight:
22
(gr)
Firearm Weight:
7.2
(lbs)
Recoil Impulse
2.55
(lbs.sec)
Recoil Velocity
11.41
(fps)
Recoil Energy
14.56
(ft.lbf)

Mass:
300
(gr)
Velocity:
1550
(fps)
Energy:
1601
(ft.lbf)
2170
(joules)


.577 Bland-Pryse Revolver Stopper

Pushing approximately a 400 grain bullet at about 725 fps, these 5-shot revolvers were made as last-ditch “stopping” guns in case of attack by large animals, and most of them were taken to India during the Victorian period.
https://www.forgottenweapons.com/577-caliber-bland-pryse-stopping-revolver/

Bullet Weight:
400
(gr)
Bullet Velocity:
725
(fps)
Powder Charge Weight:
15
(gr)
Firearm Weight:
7.2
(lbs)
Recoil Impulse
1.62
(lbs.sec)
Recoil Velocity
7.24
(fps)
Recoil Energy
5.87
(ft.lbf)

Mass:
400
(gr)
Velocity:
725
(fps)
Energy:
467
(ft.lbf)
633
(joules)


.45-70 Ballistics
Typical 45-70 ballistics with modern factory ammo are a 300gr bullet at 2,350fps (3,678 ft-lbs), a 325gr bullet at 2,050fps (3,032 ft-lbs), and a 405gr bullet at 1,330fps (1,591 ft-lbs). The .45-70 Govt is very effective out to around 150 yards with minimal bullet drop, but it’s capable of great accuracy and longer range shooting as well.

One .45-70 load approximates the performance of the original .45-70 Govt black powder loading of a 405 grain bullet (.307 BC) at 1350 feet per second while the other is a 325gr Hornady LEVERevolution factory load (.230 BC).

Lets use 405 grs, 1,330 fps, 27 grs

Bullet Weight:
405
(gr)
Bullet Velocity:
1330
(fps)
Powder Charge Weight:
27
(gr)
Firearm Weight:
7.2
(lbs)
Recoil Impulse
2.99
(lbs.sec)
Recoil Velocity
13.37
(fps)
Recoil Energy
19.99
(ft.lbf)

Mass:
405
(gr)
Velocity:
1330
(fps)
Energy:
1591
(ft.lbf)
2157
(joules)

.44/40

The ballistic information based off three grain types for the .44 WCF muzzle velocity is 1,245 ft/s (200 gr), 1,190 ft/s (217 gr), and 750 ft/s (225 gr).

So say 200 grs, 1250 fps and say 10 grs

Bullet Weight:
200
(gr)
Bullet Velocity:
1250
(fps)
Powder Charge Weight:
10
(gr)
Firearm Weight:
7.2
(lbs)
Recoil Impulse
1.33
(lbs.sec)
Recoil Velocity
5.95
(fps)
Recoil Energy
3.96
(ft.lbf)

Mass:
200
(gr)
Velocity:
1250
(fps)
Energy:
694
(ft.lbf)
941
(joules)

.44 Magnum

Say 300 grs , 1250 fps, 15 grs (?)

Bullet Weight:
300
(gr)
Bullet Velocity:
1250
(fps)
Powder Charge Weight:
15
(gr)
Firearm Weight:
7.2
(lbs)
Recoil Impulse
2
(lbs.sec)
Recoil Velocity
8.93
(fps)
Recoil Energy
8.92
(ft.lbf)

Mass:
300
(gr)
Velocity:
1250
(fps)
Energy:
1041
(ft.lbf)
1411
(joules)



Will continue in a moment.Looking for info on the .577 Eley Revolver cartridge

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

Edited by NitroX (24/06/20 11:49 PM)

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