Projectile Sorting

A

Alastair

Guest
Hello All

I have been sorting some projectiles for a 1000yrd shoot coming up and have been looking at the base to ogive length and the bearing area length.

With the projectiles I have been playing with I have sorted them into batches where the base to ogive is the same but I am rather surprised by the difference in bearing area length.

Ideally I'd like them all the same but what sort of tolerance causes what effect with the bearing area?

In previous questions I asked the wise have said neck tension/ uniformity is the most important factor with long range loads.

Given that response, is bearing area really important?

Regards

Alastair
 
As far as I am concerned, if you are shooting boat tail bullets you can forget about base to ogive. Just worry about the bearing serface length. If you are shooting flat based bullets you can worry about base to ogive length.

I also sort by weight. After I seperate the bullets by bearing serface I seperate the sorted bullets by weight. Everything gets put in zip lock bags and labled.

But, I'm anal!!:eek:

Tod
 
Last edited:
Yes bearing surface is important thats the only part that is in contact with the barrel. Do not mix match them. you won't like it.

Joe salt
 
Response to A--Bullet Sorting

Sir: I have found that sorting bullets by measurement from the tip to the beginning of the bore riding surface is important to group size. By actual shooting experimentation I have found that variations of as little as .003" in this measurement will produce "fliers" that expand group sizes significantly.
I am looking for others to verify my empirical data. I notice that sorting of target bullets in this way produces a statistical normal distribution---So I do not throw any bullets away, I simply shoot all in a specific grouping together for group tendencies that approach smallest sizes [my next statistical examination will be to learn if certain measurement groupings are producing best results]. Weight sorting of target bullets is [in my view] a waste of time..
BE WELL and good shooting---hope to see you on the 1000yd line experiencing accuracy vice precision....[For the record we are speaking about precision here----Accuracy includes the large statistical error sitting behind the rifle]..V/r mk
 
Minakuchi

Yes you are on the right track, what I have been trying to fine out like you, do the longer or shorter bearing surface bullets shoot better in my rate of twist.

I like his forum, but I prefer talking in person or on the phone to get my point across.
 
Eggman, Yes Ogive to Ogive that is the part that touches the lands fist and the same if you want to put the bullets in backward.
 
Thank you for your input.

It will be interesting to see what happens.

Regards

Alastair
 
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