Shooing a rifle at 45 degrees

Rovi

In the interests of of completeness (and ultra geekiness :rolleyes:), here are a couple of dedicated long range rounds:

Centrefire
BlackHills .338 dia., 338 Lapua, 300 gr. HPBT Match
The maximum range of your BlackHills .338 dia., 338 Lapua, 300 gr. HPBT Match at 2800 Feet per Second is:
7349.2 yards at an elevation angle of 32 degrees.

Barnes .510 dia. (50 BMG) 750 gr. LRS-Solid
The maximum range of your Barnes .510 dia. (50 BMG) 750 gr. LRS-Solid at 2700 Feet per Second is:
9040.4 yards at an elevation angle of 34 degrees.

9040 yards = 5.13 miles = 8266 meters :eek:

DeVore

Rovi. You have too much free time (and teh-beeg-brain-of-shootzing!)

Thanks, I was curious about that.

DeV.

Mellor

For interest, what about a swift Rovi?

Rovi

Mellor wrote: »

For interest, what about a swift Rovi?

It's already there, third one down in the Centrefire section.

Here it is again-
Remington .224 dia. 220 Swift, 50 gr. V-Max
The maximum range of your Remington .224 dia. 220 Swift, 50 gr. V-Max at 3780 Feet per Second is:
3617.5 yards at an elevation angle of 27 degrees.



I'll do a bit on energy levels at point of impact later, that's interesting stuff too.

bitemybanger

Hey Rovi
Would bullets not travell further at an angle of 45 degrees?
Max lift for max distance, any more than 45 would cause the bullet to slow quicker any less than 45 would hit the ground sooner
Saw somthing like this on Mythbusters. how far would a 22lr travell if fired at 45 degrees?
How do you work out angle>distance anyway?

Victor

bitemybanger wrote: »

Would bullets not travell further at an angle of 45 degrees?

In theory yes,and it would happen so on the Moon, but you have to take into account mass, air resistence, aerodynamics, terminal velocity, Earth curvature, etc., never mind you usual wind direction, temperature, humidity, etc.

Shooing a rifle at 45 degrees

You fire a weapon.
You shoot targets.
You shoo cats.

Mellor

I think (open to correction) that 45 degrees would be the furthest distance if the only forces were gravity and the intial force, but due to air resistance there is a third force slowing the bullet down.

The reason that air resistance doesn't affect all elevations the same is that flight pat h is longer for higher elevations. So the longer path of 45 degrees is slowed more than 35, so the max range is altered

Mellor

Victor wrote: »

In theory yes,and it would happen so on the Moon, but you have to take into account mass, air resistence, aerodynamics, terminal velocity, Earth curvature, etc., never mind you usual wind direction, temperature, humidity, etc.

Few more varibles there, but to be fair the first four are all the same really.
And earth curvature is not important over a mile or two, is fact due to land elevation it could be non existant, and the example above didnt consider it.
Nor did it consider wind temp or humidity, which again are linked to resistance


I'm just wondering, at what point did the don't shoot up thread become the how far could it go

Citizen_Erased

Jonty wrote: »

To the OP, even if you connected with your target, where did you think the bullet would go? And don't say it expanded inside the birdey.

It is definitly not safe to shoot to shoot up into tree with anything other than airguns or shotguns , i am not in anyway trying to deduct from that , i just want to put in that a standard hollow point subsonic .22lr shot at about 20 yards at a pigeon's body does not have sufficient momentum to pierce and in most cases even dent corregated tin . But please DO NOT FLAME ME , i am not trying to say it is safe to shoot at those angles , it clearly is not , im just adding some side input. oh and apologies if this is long out of date of this thread

It wasn't me!

You're saying a .22lr won't kill a pigeon at twenty yards?

IRLConor

Citizen_Erased wrote: »

i just want to put in that a standard hollow point subsonic .22lr shot at about 20 yards at a pigeon's body does not have sufficient momentum to pierce and in most cases even dent corregated tin

Unless hollow points perform vastly differently to the solid round nose target rounds I'm pretty sure you're wrong. A subsonic target round will easily penetrate multiple inches of wood at 25 yards, corrugated metal should be easy enough (unless it's particularly thick). Depending on the angle it strikes the metal it might not pierce it but it will sure as hell dent it.

It wasn't me!

Hollow points should impart more projectile energy, no? As it deforms?

Sparks

IRLConor wrote: »

Unless hollow points perform vastly differently to the solid round nose target rounds I'm pretty sure you're wrong. A subsonic target round will easily penetrate multiple inches of wood at 25 yards, corrugated metal should be easy enough (unless it's particularly thick). Depending on the angle it strikes the metal it might not pierce it but it will sure as hell dent it.

He's exceptionally wrong. At 25 yards, the only pigeon whose chest won't be penetrated by a .22lr round is the one wearing kevlar...