CZ Yearbook 2019 /eng

18 | | 19 SA style trigger My model was the first version of the CZ P-10 C with an am- bidextrous magazine catch. First, I stripped it for cleaning and inspected it for the qual- ity of manufacture. In this re- spect, there is nothing to crit- icize. I realized what a huge change the advancement of powder metallurgy and sinter- ing (MIMor MIME) has brought and the endless possibilities it has opened for designers, especially where small parts of complex design for the trigger and striking mechanisms are concerned. The pistol I analysed was mod- erately run in, it had lost the stiffness of a brand-new mod- el. First, I measured the trigger mechanism parameters with a Lyman digital gauge. CZ P-10 C trigger pull weight N average 21.2 standard deviation 0.3 maximum 21.7 minimum 20.6 450.0 400.0 350.0 300.0 250.0 200.0 150.0 100.0 50.0 0.0 9.00 8.00 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 Average v1 (m/s) Standard deviation v1 (m/s) SB 6.5 g KKSP 403,0 7,93 6,44 5,83 367,2 303,7 SB 7.5 g CPL náboj: SB 9.0 KKCPL SUBSONIC Velocity at v2,5 of 9mm Luger from CZ P-10 9 mm Luger caliber S&B 6.5 g KKSP S&B 7.5 g CPL S&B 9.0 KK CPL SUBSONIC bullet weight (g) 6.5 7.5 9.0 v1 average (ms -1 ) 403.0 367.2 303.7 v1 standard deviation (ms -1 ) 7.93 6.44 5.83 v1 maximum (ms -1 ) 415.4 375.0 311.4 v1 minimum (ms -1 ) 387.5 356.3 291.7 E1 (J) 528 506 415 a single hole. There was no dif- ference regarding the type of ammunition, the pistol tested was unfailingly reliable – any- thing we put in the magazine was positioned correctly, in- serted in the chamber, f ired and ejected. The next stage was shooting at 15 cm gongs at a distance of just under 20 metres. Mov- ing the f iring line f rom tar- get to target was easy and during rapid double shots, I started to fully appreciate the high-quality ergonom- ics of the pistol. The curve between the backstrap and the rear part of the body is fairly sharp and deep, making the user feel as if the pistol literally “sucks” itself into the correct deep grip. The convex part of the hand grip f illed up the palm nicely, the grip was strong but not forced, the position of my fingers felt completely natural. Another nice element are the small rounded projections behind the magazine catches. The small textured squares on the gripping surfaces feel just right and there is no slipping even when wearing gloves, the same goes for the serra- tions on the slide. The symmetrical design of the trigger mechanism has once again achieved what has made pistols f rom Uherský Brod fa- mous since the CZ 75 made its debut – an excellent trigger pull. If you do not score with the new CZ P-10 C, it is not the trigger’s fault. At the shooting range For practical testing we opt- ed for three types of Sellier & Bellot ammunition: a 6.5 g semi jacketed truncated cone bullet; a 7.5 g full metal jacket ogival bullet, possibly the most common service calibre; and a 9.0 g full metal jacket trun- cated cone subsonic bullet. We used 15 rounds of each type. Testing began by shooting with both hands at a simple paper target, the aim was to check the sighting. We shot at a distance of 10 metres. From the very first round, the pistol excelled. We had no problems getting 5-round groups with- in 4 cm. The top result was a 5-round sighting through 0.0 1.5 3.0 4.5 5.0 7.5 9.0 10.5 12.0 13.5 15.0 25.0 22.5 20.0 17.5 15.0 12.5 10.0 7.5 5.0 2.5 0.0 Trigger Pull Measurement Distance (mm) Force (N)