weighing bullets...

[foxguy]

!

I did 300 of them today. I was surprised to find that 243 weighed 190 on the nose.

Sierra was close on their +/-.3gr tolerances. One was 189.7, a dozen were 189.8, and six at 189.9.

the overs, were about evenly spread at 190.1 thru 1.904gr.

Just curious,

Was this 300 weighed out of a 500 box 1-lot number or 3-100 boxes same/different lot numbers.
Trying to get a little better understanding of the .3 gr tolerance.

Thanks.

 

[fguffey]

The unit does spin the bullet.

How fast? At what RPM?

F. Guffey

 

[IdahoSharpshooter]

bulk box of 500. Have another box of 500, same lot number, to do after I finish this one.

Just to satisfy my own curiosity I want to shoot three from each 1/10th Gr and see if I can tell any difference on the 35P or target.

 

[JRS]

bulk box of 500. Have another box of 500, same lot number, to do after I finish this one.

Just to satisfy my own curiosity I want to shoot three from each 1/10th Gr and see if I can tell any difference on the 35P or target.

I doubt you'll see much difference, if any at all. My 520 grain arrows and 550 grain arrows shoot through the chronograph at essentially the same speed. 1/10 GR in bullet weight is going to get lost in the noise.

 

[Barlow]

IMO BTO is more important than a few tenths of weight. I quit weighing them many moons ago. But to each his own. Barlow

 

[ClassCat]

How fast? At what RPM?

F. Guffey

90 RPM , The info is gathered in under 30 seconds

 

[Joe Salt]

Quit weighing years ago when I found one, that weighed 1.5 gr. more made a call they told me to send it back, but I told them I wanted to do an experiment.
I got in the middle of the ten ring at 1000 yards then fired the heavy one, Went in the ten ring with the others. So if you think even 2 Gr. makes a difference being pushed by 50 or 60 thousand pounds of pressure your wrong! Don't wasting your time.

Joe Salt

 

[JRS]

Quit weighing years ago when I found one, that weighed 1.5 gr. more made a call they told me to send it back, but I told them I wanted to do an experiment.
I got in the middle of the ten ring at 1000 yards then fired the heavy one, Went in the ten ring with the others. So if you think even 2 Gr. makes a difference being pushed by 50 or 60 thousand pounds of pressure your wrong! Don't wasting your time.

Joe Salt

The voice of experience

 

[ClassCat]

I have shot 65 and 68 grain bullets made on the same point die into the same hole @200 yards.

 

[JRS]

I have shot 65 and 68 grain bullets made on the same point die into the same hole @200 yards.

My 108's and 110's, made by the good RG Robinett, will do the same

 

[IdahoSharpshooter]

It's been raining off and on, and the temp hasn't gotten to 60 yet. I haven't anything better to do...

 

[SF-Guy]

My suggestion for weight only segregation: qualifying them as equal as your scale allows, placing them in an order from lightest to heaviest. Then shoot/use them in that same order.
Donovan

Weigh and group them like he says and you can shoot them low-to-high or high-to-low and it matters not. by the time i get to the heavies i am usually turning the knob abd worrying more about the light, mirage, and wind anyway. Once had a box of 100 rounds in a big MTM box all sorted and weighed and dropped it...rounds went everywhere...and i put them all in the box all mixed up and expected the worst in my match strings. Nope, shot no different than if i had not mixed them up (unless you think i was lucky enough to have somehow put them back in in order? LOL) I learned from that. i don't waste time weighing bullets ( quality manf) and i just measure base to ogive and sort them as long or short

 

[Bart B.]

If you can tell the difference 2/10ths grain makes at any range and none of the other 3 or 4 variables involved could cause it, weigh sort 'em to a 1/10th grain spread.

I've not seen any issues with a 1 grain spread in Sierra 30 caliber match bullet weights 155 to 220 grains through their first 1000 yards of travel. If someone does, bless their little hearts.