So, overall and based on this testing, IвЂ™d have to say that if you want the consistently smallest sized groups, IвЂ™d recommend the Umarex steel BBs. The H&K and Blaster BBs produced similar sized groups, but the groups produced by the H&K BBs were centered around 0.5вЂќ higher than the groups produced by the other two types. The difference between these and the other BBs wasnвЂ™t huge, but it was measurable and consistent. Groups were typically centered 1.75вЂќ below the point of aim.Дuring the test, it was notable that the Umarex steel BBs consistently produced the smallest groups. The Umarex steel BBs typically produced groups of 1.25вЂќ horizontal spread and 1.5вЂќ vertical spread. Groups were centered around 1.75вЂќ below the point of aim. The ASG Blaster BBs typically produced groups of 1.5 вЂ“ 1.75вЂќ horizontal spread and 2.25 вЂ“ 2.5вЂќ vertical spread. Groups were centered around 1.25вЂќ below the point of aim. The H&K BBs typically produced groups of around 1.25 вЂ“ 1.5вЂќ horizontal spread and 2 вЂ“ 2.25 vertical spread. Obviously thereвЂ™s always going to be a degree of the human element in a test like this, but hereвЂ™s what I found. As before, I changed to a fresh CO2 before changing ammo type and I should note that the replica I used for the test has a tendency to shoot low and the aim point for all the targets shown below was the centre point of the black circle. Is that significant if youвЂ™re target shooting? Not really, but it will be interesting to see how this translates into the next part of the test, accuracy and consistency.ДЇor the shooting part of the test, I shot several ten shot strings at targets at 6m range with the replica in a rested position. TheyвЂ™re both the same weight, though the Umarex BBs do seem more shiny вЂ“ perhaps they have a smoother surface finish and that gives a small boost in fps? While testing this particular replica it did seem that generally the ASG BBs gave speeds in the lower 260s, Umarex BBs gave speeds in the upper 260s/lower 270s and the H&K BBs gave speeds in the lower 270s. The H&K BBs fire with a little more speed than the Umarex and ASG BBs, but then they are fractionally lighter, so perhaps thatвЂ™s why? However, that doesnвЂ™t explain the differences between the Umarex and ASG BBs. Now, youвЂ™d have to do a great deal more testing to be certain, but it does seem that there is a small but measurable difference in the average speed at which each type of BB is fired. Giving an average speed for the H&K BBs of 273.7 fps Giving an average speed for the Umarex BBs of 270.3 fps Giving an average speed for the ASG Blaster BBs of 264.7 fps And the scores on the doors were (all power measurements are in fps): In each case, I waited five seconds between shots to avoid issues with cooldown. To try to produce consistent results, these tests were done using the same replica, at the same time and in the same location and with fresh CO2. The first thing I did was to weigh these BBs and this confirms that the ASG and Umarex BBs are precisely 0.35g while the H&K BBs are marginally lighter at 0.34g.ДЇor this part of the test I shot ten of each type of BB over my chronograph and produced an average figure from the results. This is interesting because I had wondered whether the ASG and Umarex BBs were simply re-branded versions of the same thing, but they certainly do look different. The Umarex BBs are slightly darker in colour and look a little more shiny than the ASG BBs. With their distinctive semi-matt black finish the H&K BBs certainly look different, but when you look closely, even the Blaster and Umarex BBs arenвЂ™t quite the same. Heckler & Koch black coated steel BBs which are identified as 5mm (.177).ASG Blaster steel BBs which are identified as 5mm/.177вЂќ, 0.35g.Umarex steel BBs, which are identified as 5mm, (.177).Up for this test I have three different brands of 4.5mm steel BB, These are: This is technically incorrect though these 4.5mm steel BBs can be shot through a rifled.

So, letвЂ™s try to answer the question: Are all steel BBs the same?ДЄll steel BBs have a nominal diameter of 4.5mm and a weight of.35g. But, is that really true? To find out, I thought IвЂ™d head-to-head test three different brands of 4.5mm BB to see if there are detectable differences in power and consistency of shooting.

Likewise in terms of quality вЂ“ there arenвЂ™t supposed to be notable differences between brands. But, all 4.5mm steel are the same? ArenвЂ™t they? ThereвЂ™s only one way to find out for sureвЂ¦ДЇor those of us who shoot with 4.5mm steel BBs, we donвЂ™t have the option of trying different weights of BB to see which is best as all steel BBs are claimed to be identical. There is also a notable difference in the quality of different brands of 6mm BBs. There are a range of different weights of 6mm BB available which means itвЂ™s possible to experiment to find the one that suits a particular replica perfectly.

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