The Blondo bullet, which relates to bullets stabilized in flight by rotation due to the aerodynamic shock effect created by the shape of the bullet, is very original in design. Blondo bullet is one of the few bullets in which the center of gravity is shifted to the tail.
Hunting bullets of Blondo, Rubeykina, Kelly McElvin, Kirovchanka, BMK, for smooth-bore guns, properties and application.
Blondo’s bullet is turned on a lathe from a steel bar, and leading ribbed lead belts are pressed into grooves on the head and tail. The bullet has a high initial speed, a fairly large lethal force and very good accuracy.
Due to the high mechanical strength and the head cut strictly perpendicular to the axis of the body, the Blondo bullet does not ricochet when it gets into the trunks and tree branches, working as a cutter. This bullet is sometimes loaded with factory ammunition. The disadvantages of the Blondo bullet include the possibility of high pressures at the time of the shot. Therefore, you should not use large samples of gunpowder when firing this bullet..
Rubeykin’s hunting bullet, properties and application.
O. Rubeykin made a very successful attempt to create a “reel” bullet, somewhat similar to the Blondo bullet. True, unlike the Blondo bullet, the Rubeykin bullet has a center of gravity shifted to the front end. It is machined on a lathe made of brass, steel or copper. There are no lead bands for this bullet, and a plastic container is used to improve movement in the bore.
When firing, the Rubeykin bullet showed good accuracy and good slaughter, but the nature of the holes shows that it does not have longitudinal stability. Unfortunately, it is also not clear what values the maximum pressure in the borehole can reach when firing this bullet. In the manufacture of a bullet Rubeykina is easier than a Blondo bullet, which, of course, is a positive quality.
Kelly McElvin’s hunting bullet, properties and application.
Kelly McElvin’s bullet is one of the most successful ballistic properties subcaliber arrow-type bullet developed in the USA. Its design feature is that in its maximum diameter (the diameter of the bullet is 11.4 mm for the 12th gauge) it is much smaller than the internal diameter of the barrel bore.
For centering the bullet with equipment and when passing through the barrel at the time of the shot, two lightweight plastic liners are used, the internal configuration of which exactly matches the external shape of the bullet. After izstvol departure, the liners are separated from the bullet, and the bullet itself is stabilized in the air due to its shape, resembling a very shortened arrow. Its center of gravity is taken out to the head.
A McElvin bullet is made from lead or ferroalloys. The positive qualities of this bullet include a greater than other bullets initial velocity with equal charges of gunpowder. This is achieved by reducing friction against the walls of the bore. She has better external ballistic data by almost halving the drag of the air. With a relatively small mass (28 g for the 12th caliber), the McElvin bullet has a very high striking ability.
Hunting bullet “Kirovchanka”, properties and application.
This is a bullet that practically repeats the design of the McElvin bullet. Despite the great resemblance to the foreign counterpart, this bullet does not show a good fight and probably can not be recommended for hunting.
The reason for such strong differences is most likely due to the use of soft lead and the low manufacturing quality of both the bullet and the container. Some hunters repeatedly tried to refine the “Kirovchanka”, which improved its characteristics, however, these modifications still do not give the quality of the McElvin bullet.
BMK hunting bullet, properties and application.
There are other sub-caliber bullets developed based on the McElvin bullet, for example, the BMK bullet (by the names of the authors: Bulavin, Medvedev, Komarov). It has good external ballistic characteristics: high initial speed, stability in flight, good accuracy. However, the tests performed are not enough to objectively evaluate this model..
Based on materials from the book Encyclopedia of the Hunter.
Rudenko F.A., Semashko V.Yu., Cherenkov S.E., Matyunin M.M..