Dales,
Have you considered breech seating your 22RF ammo?

Frank

One of the best, of the Canadian shots, tried a lot of Eley, then bought a case of that same lot (about $2300-$2500). He then attended, last years Spokane match and that case full of 22's wouldn't shoot competitive targets!!!

Frank

You can buy Eley TENEX based on specific velocities.

Once you match the right velocity to your barrel (the sweet spot of minimal vibration) you stick to that velocity and it works great.
My rifle prefers 1072 to 1075 fps (subsonic).

TENEX has the the best quality standards and least weight variation of any ammo I have tried.

But you still need to weight sort it to get subperb accuracy with it. Unsorted velocity variation is +/- 25 fps versus +/- 10 to 15 fps for weight sorted TENEX.

Always check the velocity of the lot before you purchase it.

Eley helps top competitive shooters test various velocities of TENEX before they select the correct lot to purchase.

Buy the wrong velocity for your barrel and it will not work well.

Others use a barrel tuner to adjust the barrel vibration to whatever ammo they are using.

If you don't believe that there are variances in lots of the same ammo, there are four videos posted on Youtube. These videos were made at the Lapua test facility in Arizona. A customer brought in an Anscutz rifle, wanting to test various of lots of Center X. He was looking for the most accurate lot. The rifle/action is put in a machine rest and tested at 50 and 100 yards under controlled conditions. They will test as many types and lots as the customer wants and he can then purchase the most accurate lot(s). I have two friends that took their rifles there for testing and bought ammo.
Watch, listen, and learn.

Go to Youtube, type in "Pairing Lapua 22 caliber ammunition with my Anscutz target rifle"

Schuetzenmiester wrote on Jan 6^th, 2018 at 4:45pm:

I kept Eley Ten-X for a decade and could not get ti to shoot as well as it did in the first three or four years. Bought new Ten-X, two different lots, and it shot noticeably better than the saved decade old ammunition. 

I had the same experience with the treasured Fiocchi Pistol Match from several decades ago. I bought all of a lot number that I could from Kesselring's and hoarded it for only matches, but the accuracy fell off within five years.

Based on these experiences, admittedly a limited sample size, my choice today is to shoot it up within four to five years. I now mark the purchase date on the box and shoot the oldest first. 

Of course, one never knows how much time the warehouse or the dealer had the boxes sitting on the shelf.

but a word of caution and I hope reason:    when shooting long range 22 rimfire 100 and 200 yards.  the ammunition is just one of the factors  perhaps the barrel itself (once up to working temperature) and the action are probably the most significantly consistent. 
  ammunition even from high grade and demonstrably high quality lots will have some slight variables that might vary a few FPS over a 200 yard trajectory which can have serious impact on shot distribution on the target. 
  "Conditions" those variables in atmospheric motion and air density and light effects are probably the least predictable and may have the biggest impact.  
Machine resting with a mechanical trigger pulling device may rule out most of the human factor, except in deciding the timing of the shot----reference evaluating "conditions"

edit: an I might add theater is a whole world of differences between the 100 yard target and the 200 yard target.    100 yard groups and scores are only an general indicator of what or may-not happen at 200 yards

BudHyett wrote on Jan 6^th, 2018 at 6:18pm:


Thanks Bud.  That is why I prefer offhand.  It doesn't really matter    Assuming a 50/50 wobble distribution 

OK, I'm being picky.  But the term EPS stand for Enhanced Priming System IIRC.  At the same time the current flat nose with the dimple nose configuration came out and that has caused the confusion of calling the nose configuration as the EPS nose.

My guns really like Eley Match after testing and selection best lots and then weight sorting and tested lots of RWS R-50.  Some like the Federal Ultra Match but it can cause flyers.