GunTuff Pellet Sizer .177 & .22 [4.50 4.51 4.52 4.53 5.50 5.51 5.52 5.53]

Product Information

The device is designed to give an equivalent impact force to an airgun pellet hitting the paddle of a target at 5.5 ft/lbs energy (7 Joules). To mimic the effect of a target being shot at with a WFTF legal air rifle at 55 yards.” I haven't done near as much testing as I would like yet but wanted to share what little testing Ive done.

The most popular pellet gauge tool is probably found at www.pelletgage.com and they are still making gauges that can identify pellet head size in a lot of different calibers. Once you’ve identified the exact size, you can then start to look at variances in weight.Let’s talk about that next. From my experience shooting air rifles there area few kinds of pellet that stand above the rest in terms of performance, power and quality of manufacture. Bear in mind that pellets will behave differently in different rifles, even those of the same brand and model. So this is just a guide to what works well in my experience, and for the people I have shot alongside. Recommended: Air Arms FieldThe undisputed kind of domed pellets, the Air Arms pellets are supposedly carefully selected to to provide excellent shot to shot consistency, and even looking at the pellets in the tin, they look very uniform and free from imperfections on the surface. They also allow you to choose skirt size between .51 and .52, which is nice, with the .52 pellets coming out on top.

Some brands of pellets will let you choose what size of skirt the pellets have. This will be displayed as 0.01 differences in the calibre, for example .177 pellets will be marked as 4.51, 4.52, 4.53, etc. The idea behind this is the wider the skirt, the better the seal behind the pellet. This provides a greater pressure behind the pellet forcing it out at greater speed and therefore improving accuracy. Pellet sizing was hot in the 1970s, when pellets weren’t as uniform as they are today. I own a sizer and I’ve used it to compare the accuracy of sized pellets against unsized pellets from the same tin. I have never seen a difference in accuracy, but I have heard of one reason for sizing that might make sense for some shooters. I’ll get to it at the end of this post. These are some of the cheapest pellets that money can. But don’t let that put you off, these practice pellets are made to a great standard and feature a classic wadcutter shape to cut clean holes in a paper target, allowing you to see exactly where you have shot. For this reason I think the Bisley practice pellets make a great choice for zeroing scopes in at short range and, well, practising. We have a team of expert technicians and a complete repair shop that are able to service a large variety of brands/models of airguns.

The sizer will also correct triangular or out of round pellets to quite a good degree, and will also show up any pellets that are over or undersized from the tin. This will be obvious when you push the pellet to the stop. The loose ones will fall in, and the tight ones will need more of a push. The most important choice when it comes to selecting pellets is their calibre. Now, obviously the pellets you choose have to match the calibre of the gun you are firing, but different sizes have different characteristics.