Guess no one told him to weigh primers then.....................
Gary

(10-19-2013, 09:12 PM)Lumpy Grits Wrote: Guess no one told him to weigh primers then.....................
Gary

I'll bet he doesn't index his primers either. Shoot straight, rdnck.

I don't weigh my bullets.
When my mould is up on temperature I found that if I keep my pour consistent they will drop out weighing no more than 3/10 from the light side to the heavy. Most are the same weight.
Bullet weight that vary 1 or 2 grains that drop out of the same mould have a problem like slag buried inside of the bullet or the bullet did not fill properly and this will throw the bullet out of balance and that will throw the accuracy.
You can take a bullet from two different moulds with the same bullet profile that are properly filled out and the weight will vary 5 grains or more between the two you will see that both bullets will impact at the same point of aim even though those two bullets travel at different velocities. This is where muzzle jump comes into play.

Kurt

[quote='Kurt' pid='6342' dateline='1382279213']
I don't weigh my bullets.
When my mould is up on temperature I found that if I keep my pour consistent they will drop out weighing no more than 3/10 from the light side to the heavy. Most are the same weight.
Bullet weight that vary 1 or 2 grains that drop out of the same mould have a problem like slag buried inside of the bullet or the bullet did not fill properly and this will throw the bullet out of balance and that will throw the accuracy.
You can take a bullet from two different moulds with the same bullet profile that are properly filled out and the weight will vary 5 grains or more between the two you will see that both bullets will impact at the same point of aim even though those two bullets travel at different velocities. This is where muzzle jump comes into play.

Kurt

Very informative Kurt. I never took the time to ever put anything on paper and see what difference it really made..

To Rick and Gary: I thought everyone weighed their brass and primers.

To the other two, At least I always shoot at the right "TARGET "!!!!
Mark

Mark.

Here is an extreme example. I have two identical bullets that have the same profile for the .50. One weighs 685 gr and it is a hollow point and the other is a 718 gr. both were cast using the same batch of alloy and cast at the same time. They had a load of 110 grains of Goex 1f express. I shot them on the Shiloh range at that 1100 yd buffalo both placed the shots on or around the white spot on the bull without making a sight adjustment. That is a 33 grain difference in bullet weight.
Kinda makes you scratch your head dont it?

Yes I was sitting beside you when you were shooting at it, I do believe. I asked Dave Gallo once about weighing his bullets
and he said he never weighs them. Of coarse maybe he doesn't do his own casting either? Guess was wondering if a
person gets to over thinking this whole process. The darn guns always seems to shoot well what ever you put in to them.
Like Dave said it is all luck and guessing right on the wind changes. Mark

Nope Mark; no luck involved. It's all in knowing your rifle and judging the breezes.

(10-20-2013, 01:56 PM)Kurt Wrote: Nope Mark; no luck involved. It's all in knowing your rifle and judging the breezes.

Yes Kurt there is some luck involved, many times on the quigley range there has been a steady wind and right after you pull the trigger a gust hits you and the shot goes off the side of the target, no way to see that coming.

While practice/fun shooting at the Quigley Buffalo with my 45-70 and a 535gr. Postell, I desided to see how my 410 gr. flat points held up at distance. Having no sight settings for the 410's I just loaded the round and fired it with the Postell setting figureing to allow the dust to tell me what to do with my sight setting.....the radio rang back!!!! That little flat point had hit steel!!

I proceeded to fire all of my practice ammo, mixing the Postells and the 410fp's at the various targets using the same postell setting for both, and was able to hit steel just fine. This was a full 125gr. different and totally different profille.

Both loads had the exact same 68gr 2f KIK load and 150LP primers. All the bullets had been lot weighed to withing 1gr of each other.

I do believe that an air void or slag pocket can cause the shot to be a "Flyer" . NOT because of a lighter/heavier bullet,... but because of an "out-of-balance" issue... so I do weigh my bullets and keep them in groups from the same casting sessions and don't mix groups....

Last casting session resulted in one group of bullets that contained about 75 533's, 180 534's, and 100 535's. and about 5 or 6 that went light into the 532 or less range (the 5 or 6 were thrown into the scrap bucket for remelting)