blink of an eye

[6.5 shooter]

The average human's eye blinks at a speed of 300 to 400 milliseconds or 3/10ths or 4/10ths of a second.

So thinking about all the BS about an extra 50 or 100 fps and risking life and limb to get it.

So I wondered how far would a bullet travel in the blink of an eye.
So let's say said rifle shoots a bullet (in a vacuum) at 3000 fps or 1000 yards per second.

So 3000fps / a 10th. = 300 feet or 100 yds. (per 10th of a second) X 3 (10ths) = 900 feet or 300 yds. in the blink of an eye.

So really does that extra 50- 100 fps Really make a difference?? for all the extra pressure, throat erosion, recoil, etc.

[KCL]

Originally Posted by 6.5 shooter

The average human's eye blinks at a speed of 300 to 400 milliseconds or 3/10ths or 4/10ths of a second.

So thinking about all the BS about an extra 50 or 100 fps and risking life and limb to get it.

So I wondered how far would a bullet travel in the blink of an eye.
So let's say said rifle shoots a bullet (in a vacuum) at 3000 fps or 1000 yards per second.

So 3000fps / a 10th. = 300 feet or 100 yds. (per 10th of a second) X 3 (10ths) = 900 feet or 300 yds. in the blink of an eye.

So really does that extra 50- 100 fps Really make a difference?? for all the extra pressure, throat erosion, recoil, etc.

Yes.

[Kurt505]

You never factored in drag. It starts at 3000fps but slows down by the time you hit 1000, depending on the bc it could be down to 1500fps by then.

[marxman]

Well if you blink at 300 milliseconds out of 3000fps you’ve lost a thousand feet right there. If you were aiming at more than 300 metres would your bullet make it that far?

[260 Rem]

Eye blink techniques are effective ONLY if the trigger is pulled between heartbeats

[Stinky Coyote]

2700 fps to 2580 fps only 5% difference. The second sounds slow but is it really? Drag is exponential so deceleration would be, so where would a good efficiency point be? 100 fps on 2900 is 3.4%. We get hung up on velocity numbers imo, throw the differences into percentages and it helps perspective how little a couple hundred fps is when your already in the thousands.

[catnthehat]

If a person looks at real time.

At a MV of 3000 FPS a 140 grain .277 bullet is going
2116 FPS with 61" of total drop at 500 yards
TOF is .5961 sec.

at a MV of 2,900FPS, it is going 2036 FPS at 500 yards
Total drop is 65.7 "
TOF is .6178

To put that in perspective, IF a person is capable of killing cleanly at 500 yards it makes little difference in today's World of turretable scopes.
At 300 yards I doubt very much if a person id shooting MPR , it makes no difference.
Cat

[Stinky Coyote]

Maybe another factor would be to gain that extra 3.4% velocity what percent increase in pressure? Worth it in some cases?

[6.5 shooter]

Originally Posted by Kurt505

You never factored in drag. It starts at 3000fps but slows down by the time you hit 1000, depending on the bc it could be down to 1500fps by then.

Yes I did hence the word vacuum in the equation.

This is not about exact numbers but about people super charging their rounds for a little extra velocity.

To me accuracy is FAR more important then velocity.

[Dean2]

Originally Posted by 6.5 shooter

The average human's eye blinks at a speed of 300 to 400 milliseconds or 3/10ths or 4/10ths of a second.

So thinking about all the BS about an extra 50 or 100 fps and risking life and limb to get it.

So I wondered how far would a bullet travel in the blink of an eye.
So let's say said rifle shoots a bullet (in a vacuum) at 3000 fps or 1000 yards per second.

So 3000fps / a 10th. = 300 feet or 100 yds. (per 10th of a second) X 3 (10ths) = 900 feet or 300 yds. in the blink of an eye.

So really does that extra 50- 100 fps Really make a difference?? for all the extra pressure, throat erosion, recoil, etc.

Completely spurious position or comparison! The blink of an eye has absolutely zero to do with bullet velocity. By that argument 1500 FPS is every bit as good as 3000 fps and we all know that isn't even close to right. You want to discuss ballistics and the effect of velocity fine, but lets maybe try to stick to information that bears a relationship to the topic and that actually makes sense.

[6.5 shooter]

Originally Posted by Dean2

Completely spurious position or comparison! The blink of an eye has absolutely zero to do with bullet velocity. By that argument 1500 FPS is every bit as good as 3000 fps and we all know that isn't even close to right. You want to discuss ballistics and the effect of velocity fine, but lets maybe try to stick to information that bears a relationship to the topic and that actually makes sense.

So please explain WHY 1500fps is less or not as good as 3000fps??? A dead critter is a dead critter.

This not about velocity or how "flat" your rifle shoots this is about nimrod re loaders and others who push the safety barriers to try and achieve an extra 50fps. to do....????
I started the thread after reading about a guy with stuck cases on his 7MM rem mag because he started at the max load in the book.

What I am trying to do is to have people question WHY they feel a couple hundred feet per second makes their chosen rifle, suddenly become the hammer of Thor.
And everyone blinks. WOW

[Dean2]

Originally Posted by 6.5 shooter

So please explain WHY 1500fps is less or not as good as 3000fps??? A dead critter is a dead critter.

This not about velocity or how "flat" your rifle shoots this is about nimrod re loaders and others who push the safety barriers to try and achieve an extra 50fps. to do....????
I started the thread after reading about a guy with stuck cases on his 7MM rem mag because he started at the max load in the book.

What I am trying to do is to have people question WHY they feel a couple hundred feet per second makes their chosen rifle, suddenly become the hammer of Thor.
And everyone blinks. WOW

You've been reading far too many Creedmore threads.

To your other point - Shoot a deer with a 25-35 at 400 yards then shoot one with a 257 Bee at the same distance and you will pretty quickly see why 1500 FPS is not the same as 3400 FPS.

[marky_mark]

More velocity with a high B.C. bullet means less wind drift
Dialing in a distance with your rangefinder and ballistic calculator is relatively easy
Dealing with 30 mph gusting wind
Not quite as much fun

[Norwest Alta]

I might be wrong but I think the op is trying to bring the topic of safety and pushing the limits to gain a extra 100 fps.

The max book load is somewhat ambiguous. Seems to me that different manuals has different max loads. In my reloading experience I don't find a need to start at the minimum but having said that I don't start at the max either.

[Kurt505]

Originally Posted by Norwest Alta

I might be wrong but I think the op is trying to bring the topic of safety and pushing the limits to gain a extra 100 fps.

The max book load is somewhat ambiguous. Seems to me that different manuals has different max loads. In my reloading experience I don't find a need to start at the minimum but having said that I don't start at the max either.

I always start at the mid point, have always been able to work up from that so far.

[Norwest Alta]

Originally Posted by Kurt505

I always start at the mid point, have always been able to work up from that so far.

I'm 3 gr from max. Then go up in .5 until I get the accuracy I want or pressure signs. Whichever comes first.

[Kurt505]

Originally Posted by Norwest Alta

I'm 3 gr from max. Then go up in .5 until I get the accuracy I want or pressure signs. Whichever comes first.

That’s pretty much exactly what I do.

[Big Lou]

Originally Posted by Norwest Alta

I'm 3 gr from max. Then go up in .5 until I get the accuracy I want or pressure signs. Whichever comes first.

Same here. Smaller increments on smaller cases but same method. Works for me.

What’s the saying? There are old hand loaders and bold hand loaders but there are no old, bold hand loaders.

[Norwest Alta]

Originally Posted by Big Lou

Same here. Smaller increments on smaller cases but same method. Works for me.

What’s the saying? There are old hand loaders and bold hand loaders but there are no old, bold hand loaders.

I don't know about the saying much prefer the " blind in one eye and can't see out of the other".

[6.5 shooter]

3 fine examples of lets skip a step so we can get them bullets down range in a hurry.