Measuring bullets

T

Tod Soeby

New member
I just barrowed a copy of the PS book on shooting 1K. I think the book came out around 2000. Towards the end of the book is an interview with Bill Shehane. He talked about measuring every bullet for runout. Basicly " measure or lose".

A friend of mine is using a Stony point bullet comparitor. I know that they are ment to measure the runout in loaded rounds. I have one of those big stainless "nuts" sold by Sinclaire. It has 6 different holes in it for 22, 243, 25, 7mm, 308, and one other. Can you measure just the bullet with these tools effectively? Is there a better tool. Sinclair has no other tools except those I mentioned above. How many of you actualy measure and weigh your bullets?

I NEED TO STOP READING ......I might find out that I actally AM as dumb as I look!! :eek:
 
You can measure externally with mics and comparitors to check for external differences. Also you can get an electronic device that measures the thickness of the jacket with ultrasound .
I have never owned one and can't say if they are worth it or not.
Mitutoyo had a small bench model some years back.
Jacket concentricity is a big issue with potential accuracy and ultrasound is the only way I know of measuring it AFTER the bullet is made.
 
Lynn said:
Tod
You can measure base to ogive length.
You can measure boattail length.
You can measure bearing length.
You can measure depth to the lead core.
You can measure over all length.
You can measure weight.
You can check them with a Juenke.
You can uniform meplats.
You can add tips.
You can check them for spin balance.
You can point the meplat
Lynn
Click to expand...


Mr. Lynn in your own words please explain to us, why do you expect Mr. Tod Soeby to have some time left to shoot?

Con
 
Last edited by a moderator:
Lynn said:
Tod
You can measure base to ogive length.
You can measure boattail length.
You can measure bearing length.
You can measure depth to the lead core.
You can measure over all length.
You can measure weight.
You can check them with a Juenke.
You can uniform meplats.
You can add tips.
You can check them for spin balance.
You can point the meplat
Lynn
Click to expand...

Great.....but the question remains.......with what?? What sort of tools do YOU use, and do YOU do all af the above?
 
Hey D........good to hear from you.

Looking at the D Tubb unit, one question pops into my head. If they are concerned with the bearing surface, is there a hole in BOTH ends of the machine, one for the bullet tips, and one for the boat-tail? A hole on one end (for the tip) and flat on the other would be good for flat-based bullets, but I would think you would need a hole on the other end for the boat-tail to fit into.

Thanks,
Tod
 
Tools

Calipers with ogive attachment for base to ogive and boattail length.
Bearing length with comparator from John Buhay or Bill Shehane or David Tubb.
Various meplat trimmers out there from Tubb, Sinclair, Mountour Rifles, Tooley, etc etc etc.
Pointing die from John Whidden.

The better question to ask is..which of all these things really make a significant and repeatable difference? I wish I knew.

Rob
 
D Tubb Unit

Tod Soeby said:
Hey D........good to hear from you.

Looking at the D Tubb unit, one question pops into my head. If they are concerned with the bearing surface, is there a hole in BOTH ends of the machine, one for the bullet tips, and one for the boat-tail? A hole on one end (for the tip) and flat on the other would be good for flat-based bullets, but I would think you would need a hole on the other end for the boat-tail to fit into.

Thanks,
Tod
Click to expand...

Tod,the Tubb unit does have a hole on both ends for boat-tail and tip. Having checked bearing length with calipers and now with the Tubb unit I found the tubb unit easier and takes more of the human error out of the procedure. With this said I find that I am sorting less bullets than I ever did and shooting them straight from the box but only after checking a box from a lot to see what I have. I shoot at 600 yds. not a 1000 yds.

Rodney
 
Use two of the Stoney Point comparators. Facing eachother on the blades of a caliper. With the proper inserts you can measure the surface of the projectile. I have the "nut" and use it promarily to prop up devices around the relaoding room and not much else.
One of my goals at the IBS nationals was to meet Tod Soeby, the author of many of the longer and interesting threads on this forum. I did it and glad I did!!! Good luck Tod and I hope you win the Williamsport rifle on the ticket I sold you.
 
oneflyer said:
Use two of the Stoney Point comparators. Facing eachother on the blades of a caliper. With the proper inserts you can measure the surface of the projectile. I have the "nut" and use it promarily to prop up devices around the relaoding room and not much else.
One of my goals at the IBS nationals was to meet Tod Soeby, the author of many of the longer and interesting threads on this forum. I did it and glad I did!!! Good luck Tod and I hope you win the Williamsport rifle on the ticket I sold you.
Click to expand...

You grosely under estamate your fine salesmanship skills sir.....you sold me TWO tickets to that fine rifle! I only wish it was my shooting skills, not my literary skills, that made me "famous" :eek: :D
 
the only measurment that counts is the group size, measuring less equals more time to shoot

the wind is my friend

DD
 
dmoran65 said:
I use a "dial indicator stand" with comparators I make myself (from brass). My primary focus is "base to ogive".

Happy Shooting
Donovan Moran
Click to expand...


Gentleman, can you believe what you read?,,,,,,,,,,A precision measuring tool made of brass?????????

Gentleman, can you possibly believe, that it may be the only one on the planet.

Mr. Donovan Moran, you couldn't possibly make another one for your friend, could you?

Con
 
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