The ZAN Projectiles .22 ELR are now available !!!

I tried to shoot the ZAN ELRs (.22 42.3gr ) from the FX dynamic 700mm (stock configuration, superior heavy stx).
This rifle easily gives 1 MOA at 50 and 100 yards using Altaros 40gr @ 880fps.
With the ELRs I was barely getting 2 MOA (tried only 50 yards).
Tried different tunes, with velocities from 860 to 940 fps, ~500 rounds total.
The chronograph shows consistent velocities (attached), no wind.

Does anyone have experience with ELRs and FX dynamic 700mm?
Any gotchas? Lubrication? Barrel cleaning? Specific velocity or tune?

The price of ELRs is very attractive, I am eager to try them a few more times, but they need to be at least close to the Altaros
Thanks!

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I'd like to compare the .22 ZAN ELR 42.3 grain to the .22 Altaros King 40 grain and will do so in a couple of weeks. Will be in Phoenix this weekend at the Sonoran Desert Classic AAFTA. So, the following weekend.
Although not apples to apples, I did compare the ZAN ELR .22 at 905 fps from 1:16 barrel to the .25 Altaros ATP Smooth 49.5 at 890 fps from a 1:18 barrel a week ago. At 100 yards in breezy (but not windy) conditions, the ZANs would do approx. 1 to 1.25 MOA. The Altaros .25 would do between 0.75 to 1 MOA consistently. So, in this case the nod goes to the Altaros @Altaros. FYI, the ZANs ran about 0.165 to 0.170 G1 BC, with the Altaros at approx. 0.195 to 0.200 G1 BC.
When I do compare the .22 versions, I'll shoot them from the same barrel at the same speed. More to follow...