ELDM lot-to-lot variation

[Bevan]

I'm shooting the 108gr ELDM from a 6mmGT in a Brux barrel. I tested loads with one particular box to check if my barrel liked the bullet - shot 3x 10rd groups around 0.5-.0.6 MOA group size (0.05 - .06MRAD mean radius). Seemed all good, so I purchased 1000 bullets of a different production lot, and now I'm getting 10rd group sizes around 0.9-1+ MOA (mean radius 0.07+ MRAD) with that lot.

This is pretty frustrating, all I can pin it on is lot-to-lot variation in the bullets - the 1K I bought coming from a lot where, for whatever reason, the quality of the bullets is lower.

Anyone else seen a degree of lot-to-lot variation like this?

If that's the problem, what can be done about it? Really hard to test a production lot before buying the same lot in bulk with the market conditions these days

 

[hafejd30]

I haven’t ran the eldm. I run a ton of ELDX and they seem decent

I had a box back in the day (can’t remember if it was Amax or SST) but it had a .017” difference in a box of 100 bullets from base to ogive. It was very clear when seating before I measured them that they came off different machines even though it was a single box of 100 bullets

 

[Rocketmandb]

 

[spife7980]

Did you adjust your load to accommodate the new bullets?

 

[hafejd30]

I wouldn’t say variations are a bad thing just fyi. Obviously my example above was a bit extreme. A box of 175 smk was .003” compared to the .017” of the hornady

Generally if I’m running a bullet .020 off the lands. When I switch lots I remeasure the new lot to seat the same .020 off the lands.

Variation in a single lot is not good. But some variations lot to lot is expected

 

[stello1001]

It's a hornady, what did you expect? Yes there's gonna be lot to lot variation. ESPECIALLY with hornady.

 

[ShtrRdy]

Do you have a comparison of velocity? And a comparison of physical dimensions?