Difference Btween Eley Match and Eley Match EPS?

[Fotheringill]

In the rimfire testing report, there seems to be a difference between the two. Are there two different products?

 

[Shynloco]

Now I'm no expert, but as I recall "Eley Match" is what I call Black Box Eley (box is entirely black in color) and Eley Match EPS is a compromise and joint effort (made by Eley) between Eley and Remington. Also the word "Remington" appears printed diagonally across the front of the box (EPS) that is white/green and black. The ammos are two different ones as they are priced differently as well with the EPS being less as expensive meaning not as highly reliable for Match shooting. Doesn't mean EPS won't shoot in your rifle but the serious shooter would be using the Black Box Match Eley.

 

[poj223]

the nose of the bullet is shaped different.
most barrels like either shape, some barrels like the round nose more (match), some like the flatter nose more (EPS).
many people test ammo lots, and bullet styles before they make a large purchase.

 

[Outrider27]

the nose of the bullet is shaped different.
most barrels like either shape, some barrels like the round nose more (match), some like the flatter nose more (EPS).
many people test ammo lots, and bullet styles before they make a large purchase.

What poj223 said. Unfortunately, neither price or brand is a final arbitor of what your specific .22rf will like. Test as many as you can; your rifle will tell you which one it likes - that test is a good guide, but in the end only reflects the preferences of one specific rifle. And be thankful if yours likes one of the lower priced ones.....

 

[Joe D]

There are only two types of Eley Match - Rifle and Pistol. Pistol match has the round profile to facilitate easier feeding in an auto pistol.

 

[WyoWindage]

Then came the breakthrough Eley executives view as the most important single factor in the TenEx story: Eleyprime. During the years that the engineers worked on perfecting Eley ammunition, they were also engaged in ongoing research into priming technology. Commonly used priming material is percussive; bump it, it goes bang; give it a spark, it goes bang; look at it cross-eyed, it goes bang. In the 1960s and 1970s ammunition manufacturers worldwide used essentially the same technology.

Concerned by the inevitability of explosive accidents no matter the precautions taken, Eley in 1975 embarked on a project to find a new priming process. In 1979 chemists working on a dry powder mixture for filling .22 cases discovered that it was non-explosive until exposed to water, whereupon a chemical reaction converted it to conventional lead styphnate (primer compound).

A closely guarded (and patented) secret, this new Eleyprime process had two huge consequences: It eliminated the risk of explosion from the preparation and dispensing of priming compounds, and it allowed the amount of priming material applied to each individual rimfire case to be very tightly controlled in a normal workshop environment using automatic equipment.

This last part is critical because it has long been known that case-to-case variation in the amount of priming material is the most important factor regarding variations in .22 LR rimfire performance. This is due to the fact that in small rimfire cartridges the primer is a significant portion of the actual propelling charge (much more so than in larger centerfire cartridges) and because conventional priming compound is too sensitive to be aggressively metered and applied.

The Eleyprime System allows exactly identical amounts of the inert powder to be put in each case. Then a round-tip rod is inserted down into the case to press the powder evenly into, and around, the rim, and a single, metered drop of water is added, which activates the compound over a several-hour period.

After drying, the cases can then be conventionally charged with precisely metered propellant (five rounds at a time on the TenEx loaders). Before Eleyprime, there was an average 31 to 39 milligram spread in the amount of priming material round-to-round in TenEx ammunition. With the Eleyprime System (EPS), the spread was reduced to only plus/minus 1.0 milligram. It was a stunning achievement, and in 1988 Eley received the prestigious Queen’s Award for Technological Achievement.

Read more: http://www.shootingtimes.com/2011/01/04/ammunition_eley_101405/#ixzz2j9WiPxwH

Saw this in Rimfire Central. Seems the new EPS is at least 30 times less spread in priming compound weight variation, compared to previous method. Can't help but help, can it? Ron

 

[Joe D]

The aggravating thing is even Tenex must be lot tested. Ask me how I know.

 

[slamfire1]

I was told that EPS bullets are coated with something different from standard bullet lube. I have no idea if they are better than the alternative.

 

[rayjay]

If I have my info right all current Match rifle ammo has the EPS bullet. Any box that says Match [without the word pistol somewhere on the box] and has round nosed bullets is old.

 

[Joe D]

That is correct Ray.

 

[Lesloan]

EPS used to stand for E(ley) P(riming) S(ystem). Now it has come to refer to the dimpled bullet that's used on the top match rifle stuff, Tenex, Match, Team and it's replacement, Edge. I believe the dimple is a manufacturing aid intended to provide a more uniform bullet weight. I've also heard it has some ballistic advantage, but that seems doubtful to me. The lubricant on Tenex and Match is a proprietary mixture of tallow and beeswax, on cheaper ammo grades it's paraffin wax. I'm not sure about Edge. As noted earlier, the pistol ammo has a round nose for reliable feeding in semi-autos.

the Eley priming system itself is now used on all Eley ammo, including the cheapest ones. It's also used by Aguila. (I suspect the bottom-line Eley is made by Aguila--they use the same priming system and are both made in Mexico. Pure speculation on my part; I don't know for sure.)

 

[TRECustom]

Good thread! Glad I checked it out!

Thanks, Tom