Air Arms Diabolo Field .177 Cal, 4.51mm, 8.44 Grains, Domed, 500ct

These are good pellets and shoot well in my Diana guns.

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Quality. Consistency. Clean in the tin. Good design for distance, but also good at 10 yards.

Nothing.

Accurate in short barrel PCP pistol. Accurate in PCP rifle at 25 yards.

These are incredible pellets that are worth the price. Rifles that use rotary mags tend to be very picky about ammo and it can be difficult to find pellets that consistently seat properly and don't require extra effort. My Gamo Swarm Fusion Gen2 and Umarex Fusion 2 eat these flawlessly without any extra input. The only comparable ammo I have found is RWS Superdome, RWS Supermag, and H&N Barracuda Match. The latter two are much heavier rounds, however.

Nothing. This is product is top quality.

The Express version is just as good if you want a light rifle round. Pistol rotary mags tend to want to be fed proprietary ammo.

Expands extremely well.

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I shot a copperhead with these pellets and it went in the snake with a .177 hole and came out with a huge hole through its guts. Didnt suffer long.

Well made pellets. Accurate.

Highest level of quality, consistent weight, accuracy off the charts. Excellent for small game, pests.

Longer skirt than the H&N field target trophy

These are good, but, don't seem to be quite as accurate as the same pellet sized 4.52. We have tried both sizes in 6 different guns and all but one showed a noticeable difference at 50 yds. I never would have thought that small size difference would mean very much, but it does.

Guns used were, TX 200---Sig Sauer Asp 20----RWS m36---Walther LGU---Gamo ACCU---and a Walther Terrus. The Gamo didn't show any difference in group size.

This is a hard review to write. I thought I really liked these pellets but now am not so sure. After purchasing a QB Chief I went on a quest to fine the pellets it liked best. After many different brands I tried the AA Diabolo .177 in 4.51 head size and found a pellet that consistently gave extremely small 5 shot groups (3/8" inch or less) at 25 yards with almost no flyers. I was very happy with this so as the first tin was getting low I ordered 4 more tins. Since opening the first of the new tins I can no longer get those consistently small groups. Now I am lucky to get a small group with most being over 1/2" and fairly often getting flyers that open up the group to about 3/4'. What happened? Seems like AA has no consistency batch to batch. Now I've got close to 4 full tins of a pellet that makes my gun shoot nothing special and will have to start the search for a good consistent shooting pellet again.

Make consistency batch to batch better.

These pellets feed accurately in a TX200 MkIII Air Rifle.

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Clean pellets that shoot OK, but not great in my TX200.

The tin says that these are 4.51mm heads, but my measurements with my Pellet Gage indicate that the majority of the pellets have a 4.53mm or larger head. Returned the 3 un-opened tins to PA (Thank you!) and ordered JSB Exacts. The JSB Exacts actually have a 4.52 mm head, just like it says on the tin, and shoot great in my TX200.

If you air gun like pellets with larger heads, these pellets may work for you.