Take a stab at what you think happened here.....

[DanSavage]

The stock has a crack? Or the bullets were hitting a wind flag or something.

[Hotolds442]

Negative

[LongRange]

WAY to many beers the night before????

[rbp75503]

Was the case cleaning or case prep different for the 1st 4 rounds than the subsequent rounds?

Had the 1st 4 rounds been sitting around for months and subsequent rounds reloaded within days of range time.

[DanSavage]

OK I've narowed it down,,it's something to do with the ammo for sure because you've posted in the ammo reloading section LOL. Different lots of powder or bullets? Ahh different head stamp brass.

[Geo_Erudite]

Horse fly on target and you shot at it, missed, it flew up a little, you shot again, missed, fly returned but a little higher, you shot again, missed, fly returned higher yet again, 4th shot you got him?

[Hotolds442]

Horse fly on target and you shot at it, missed, it flew up a little, you shot again, missed, fly returned but a little higher, you shot again, missed, fly returned higher yet again, 4th shot you got him?
lol! No. Point of AIM didn't change.

[Hotolds442]

WAY to many beers the night before????
I could probably use that as an excuse for losing a match, but no.

[Hotolds442]

Was the case cleaning or case prep different for the 1st 4 rounds than the subsequent rounds?

Had the 1st 4 rounds been sitting around for months and subsequent rounds reloaded within days of range time.
All of the rounds were loaded the same day, case prep was the same.

[GaryB]

Bullets were going so fast the jackets were ripped off and the only thing that hit the target was the core! :o

[Hotolds442]

OK I've narowed it down,,it's something to do with the ammo for sure because you've posted in the ammo reloading section LOL. Different lots of powder or bullets? Ahh different head stamp brass.
Powder lot did not change, bullets from the same factory box. Brass was all Winchester stamped, weight within .2 grains. You might be the closest guess yet.

[Hotolds442]

Bullets were going so fast the jackets were ripped off and the only thing that hit the target was the core! :o
I wish I could get it to push 140's that fast. No.

[Hotolds442]

This is what happens in my rifle when I try to light a heavy load of H-1000 with a CCI-200 Large Rifle Primer. As the chamber warmed up, ignition got better, but nowhere near what the CCI-250 Magnum primers do on a regular basis.
Look back through all the replies, there are some very good guesses and it opens your eyes to just how many things can go wrong and give poor results, and if I didn't already know the answer would have been checking each and every one. Well almost.

[DanSavage]

All that is different lot of primer's,,, woohooo!

[DanSavage]

Interesting indeed!

[wbm]

it opens your eyes to just how many things can go wrong

Oh yeah. That Murphy guy was an optimist.

[BarrelNuts]

If case prep was same that means its nothing to do with the brass... bullets all the same...powder the same... maybe seating depth or has someone said that already? Maybe different primer/lot of primers like DanSavage mentioned? Or is it something external to the mechanicals; with a vertical like that could be breath control/not firing during natural respiratory pause

Oh hell just tell us already

[DanSavage]

If case prep was same that means its nothing to do with the brass... bullets all the same...powder the same... maybe seating depth or has someone said that already? Maybe different primer/lot of primers like DanSavage mentioned? Or is it something external to the mechanicals; with a vertical like that could be breath control/not firing during natural respiratory pause

Oh hell just tell us already

He said it was the cci 200 primer vs. the loads normal cci 250.
Thanks for sharing Olds,, good information for future reference in one's reloading journey .

[BarrelNuts]

I missed that somehow... all it takes is one little thing out of about 100 different variables to monkey up the works and leave you scratching your head wondering which of the 100 it is.

[LongRange]

This is what happens in my rifle when I try to light a heavy load of H-1000 with a CCI-200 Large Rifle Primer. As the chamber warmed up, ignition got better, but nowhere near what the CCI-250 Magnum primers do on a regular basis.
Look back through all the replies, there are some very good guesses and it opens your eyes to just how many things can go wrong and give poor results, and if I didn't already know the answer would have been checking each and every one. Well almost.


WOW!!!

Ive done a ton of primer testing in my 260 and 300wm because i read so much on primers and primer seating and the difference in primer brands,cup hardness hottest and coldest ect and can say that ive seen vertical spread but never that bad.
What was the temp when you fired those rounds?

Also youve been talking to Dean havent you lol!