- Joined
- Jul 2, 2017
- Messages
- 741
- Reaction score
- 1,417
I’d shoot a groundhog at 50 yards with a patched ball but I wouldn’t hunt hogs with a .32 anything.
The Lyamn data shows that a .32 caliber rifle loaded with a 40 grain powder load using 2Fg GOEX powder will give a MV of 1878 fps and 352 lb/ft of energy.Did anyone notice the foot pounds energy of the little 85 grain conical at 50 yards, that's an ethical groundhog, feral pig/hog non-head shot round .
The Lyamn data shows that a .32 caliber rifle loaded with a 40 grain powder load using 2Fg GOEX powder will give a MV of 1878 fps and 352 lb/ft of energy.
Using this data, my Roundball trajectory calculator says the ball will be traveling at 1101 fps with 121 lb/ft of energy at 50 yards distance. This is for a 45 grain, .31 caliber roundball.
With a 30 grain powder load of 3Fg GOEX powder gives a MV of 1940 fps with 376 lb/ft of energy. At 50 yards the ball will be traveling at 1127 fps with 127 lb of energy.
I don't have any data about the muzzle velocity of a 85 grain conical but IMO, that roundball would be more than enough for a groundhog.
I can certify that out to 30 yards 12 grains of 3F or 4F under a patched round ball (#1-1/2 buck from Ballistic Products) in my 32 caliber Pedersoli Scout Carbine flintlock will without doubt dispatch a groundhog. Right now that 32 is 5-0 on woodchucks (2 this year, 3 last year if my memory is correct). If the ball does not hit any bone I gotten a few pass throughs, but to be honest, I have not really been checking, just noticed with a few.The Lyamn data shows that a .32 caliber rifle loaded with a 40 grain powder load using 2Fg GOEX powder will give a MV of 1878 fps and 352 lb/ft of energy.
Using this data, my Roundball trajectory calculator says the ball will be traveling at 1101 fps with 121 lb/ft of energy at 50 yards distance. This is for a 45 grain, .31 caliber roundball.
With a 30 grain powder load of 3Fg GOEX powder gives a MV of 1940 fps with 376 lb/ft of energy. At 50 yards the ball will be traveling at 1127 fps with 127 lb of energy.
I don't have any data about the muzzle velocity of a 85 grain conical but IMO, that roundball would be more than enough for a groundhog.
My apologies that I somewhat piggy backed on your thread. I was just asking if anyone knew of a simple answer to reducing the depth of the grooves. I agree that the Crockett is well optimised for the patched round ball. That is clearly the maker's intention. The consequent depth is a hindrance to a conventional bullet. As you demonstrate there are ways to help get around that, but I was wondering if one could remove the issue entirely for the bullet. I measure a bore from the groove so to me the bore would remain the same size.I have to break my reply down . 1) contradicts it's self, Crockett is known for being accurate with round ball and twist it has.
2. What, Yes, In some cases harder lead alloy is used with shallow rifling so as not to strip.
Soft lead (pure lead) has a brinell hardness of 5 and obturates far easier than any alloy at lower pressure, one of the conical bullets I'm working with works like a R.E.A.L. type, engagement surface is short, large loads are not needed, the ability to obturate with ease helps it work and as you note the rifling on a Crockett is deep and as such is less prone to strip out, strip out/sliding is normally a problem in the first few inches of barrel, when the conical if formed to the rifling (obturated fully) it is less of a problem and where load work up comes in .
Years ago I had problems with a revolver that would lead the bore, I used a hard lead alloy and at first could not understand why this was happening, short answer I was shooting a low powered load in competition that did not obturate the bullet allowing gas to pass around the bullet and sloughed lead on the way, I made some with pure lead loaded the same powder with the same lube , no more leading.
In the link above on patch bullets, the Whitworth is being shot with pure lead (I think), you want to talk about obturation, form round to hex.
Lastly, to bore out the rifle is not something I would consider (to .33) , the challenge is to make what I have work, otherwise I would just make a custom rifle, if I can come up with something that works across a range of .32's that would be great, if no, we always have round ball.
My apologies that I somewhat piggy backed on your thread. I was just asking if anyone knew of a simple answer to reducing the depth of the grooves. I agree that the Crockett is well optimised for the patched round ball. That is clearly the maker's intention. The consequent depth is a hindrance to a conventional bullet. As you demonstrate there are ways to help get around that, but I was wondering if one could remove the issue entirely for the bullet. I measure a bore from the groove so to me the bore would remain the same size.
Careful. 4F and the idea of duplex loads will cause hell to come to breakfast, regardless of performance.I just noted they show shocking promise considering they just dropped down the bore, load was 5 grains of 4F with 25 grains of 3F on top.
Thats impressive shooting for a .32 at 100 yds. Did you mention what distance you sighted in at? I'm interested in that 84gr bullet. Thanks for sharing results.
Drag Function: G1 Ballistic Coefficient: 0.110 Bullet Weight: 85 gr Initial Velocity: 1700 fps Sight Height : .5 in Shooting Angle: 0° | Wind Speed: 0 mph Wind Angle: 0° Zero Range: 50 yd Chart Range: 175 yd Maximum Range: 1783 yd Step Size: 25 yd | International Standard Atmosphere Altitude: Sea Level (0 ft) Barometric Pressure: 29.92 Hg Temperature: 59° F Relative Humidity: 50% Speed of Sound: 1116 fps |
Range | Elevation | Elevation | Elevation | Windage | Windage | Windage | Time | Energy | Vel[x+y] |
(yd) | (in) | (MOA) | (MIL) | (in) | (MOA) | (MIL) | (s) | (ft.lbf) | (ft/s) |
0 | -0.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 546 | 1700 |
25 | 0.21 | -0.80 | -0.23 | 0.00 | 0.00 | 0.00 | 0.05 | 453 | 1550 |
50 | 0.01 | -0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 377 | 1413 |
75 | -1.29 | 1.64 | 0.48 | 0.00 | 0.00 | 0.00 | 0.15 | 315 | 1292 |
100 | -3.88 | 3.70 | 1.08 | 0.00 | 0.00 | 0.00 | 0.21 | 267 | 1189 |
- Sound Barrier (1116 fps) - | |||||||||
125 | -8.02 | 6.12 | 1.78 | 0.00 | 0.00 | 0.00 | 0.28 | 231 | 1107 |
150 | -13.93 | 8.86 | 2.58 | 0.00 | 0.00 | 0.00 | 0.35 | 205 | 1043 |
175 | -21.83 | 11.90 | 3.46 | 0.00 | 0.00 | 0.00 | 0.42 | 186 | 992 |
One thing's for sure; your loads are packing a big wallop!
Enter your email address to join: