I was out today to do some preliminary testing of a lot of Eley Extended Range Gen 2 in my Anschutz 1761 MSR (stock). I did so here in comparison to Lapua Long Range. I will let the 100-yard folks deal with that aspect for now, and approached it like I would any ammo testing. I start at 50-yards on a relatively calm day. If an ammo doesn't perform well at 50-yards for me I have not found going longer helps. I used ARA unlimited targets as I use those a lot. The rifle was newly cleaned before the process began. I was shooting from a Bald Eagle Front rest and bag, Sinclair front bag rider with a Protektor #13 in the rear on a custom rear bag rider.
Note all the usual disclaimers. 1.) This lot in this rifle on this day did what it did, your experience may differ. 2.) There is a fair bit of lot-to-lot variability with rimfire ammo and this was just one lot. 3.) This rifle typically does not do well with Eley ammo, and it may be a byproduct of that in this case. 4.) Both lots of ammo used here were just ordered and shot as arrived. There was no lot testing prior. 5.) As I have a reference for Lapua, the price was about the same, and the target market is similar I compared it to Lapua Long Range.
Weather was 90*F, about 80% humidity. It was sunny and there was some mirage. There was a light, largely left to right wind of 0 to 5 mph. The wind was consistent though the afternoon. It was the same, or very similar, across both ammo types. No changes in temperature or humidity.
I started by shooting Lapua Long Range as a baseline. I shot two cards. My 1761 usually shoots around 2000 plus or minus a couple hundred on days like today. The 2 cards for today were 2000 and 1975. All went as expected. I believe there was one or 2 odd rounds across the 2 cards.
The Eley Extended Long Range Gen 2 did not fair so well for me. I shot 3 cards as I thought there was something wrong with my rig. There does not appear to be at this point. I testing with LLR after and it was fine. The Gen 2 ammo would string together 3-6 rounds into decent groups. However the POI would shift, sometimes gradually and other times pretty abruptly across 25 bulls. Scores Gen 2 obtained were 1315, 1325 and 1635. Whether this is an Eley artifact with this rifle or something else I do not know. While Eley claims if you are shooting 50 yards Tenex is still preferred Gen 2 should not be this different if it plans to go to 100.
There were a fair number of odd rounds in the travel across the 25 bulls. There were 10's with this ammo. LLR will occasionally throw a 25, but it is rare it throws a 10. This happened several times with Gen 2.
I have full video coverage of all of these, and will likely edit things together a full review later. A preliminary result is all his is intended to be at this point.
In sum, if it continues to perform like this for me (the rest of the lot) I will not likely try it again.
YMMV