After seeing some recent interest in shot counts for the newer 50 Joule rated versions of the HW100 I decided to do a chrony run on a fill with mine. I also wanted to fulfill a little curiosity regarding overfilling the rifle somewhat versus the affect it would have on the regulator. One of my scuba tanks, a 232 Bar steel version, still had enough pressure to do a 10% overfill so this what I tested with. Weihrauch specifies 200 Bar or 2900 psi and this fill was 220 Bar or 3190 psi according to the gauges. After 5 shots the gun's gauge was on the line dividing green from red, the marking for 200 Bar. Shooting was done with the 18 grain JSB pellets. I shot the Evanix Renegade rifle over the chrono, a Shooting Chrony F1, first to make sure that it was operating properly. I also overfilled it the same and the non-regulated rifle did not like that. Shooting the 28-1/2 grain Seneca Domes the initial velocity was 700 fps and didn't climb tp 800 fps until the gauge indicated 200 Bar. The velocities with the HW100S are as follows: 981, 970, 971, 965, 970, 975, 969, 972, 970, 974, 976, 983, 984, 984, 985, 975, 975, 976, 975, 975, 978, 977, 975, 976, 977, 975, 976, 976, 979, 978, 980, 980, 981, 980, (gauge at yellow line), 975, 968, 963, 953, 943.
From 3190 psi/220 Bar to the yellow line 9n the gauge brought 34 shots. Should make 28 shots from 2900 psi/200 Bar. I have not touched the factory setting of the regulation or hammer spring. Power with the 18 grain JSBs is 38 ft lbs or 51.5 Joules. The 10% overfill had no affect on the regulation. The Weihrauch gauge shows yellow at 120 Bar. There were actually 3 more shots past the beginning of the yellow zone at 975, 968 and 963 then the next two shots plummeted to 953 and 943. I stopped shooting there as it was about to come a thunderstorm, I picked up everything and barely finished getting all inside the house before it got rough out. The velocities were dropping sharply anyways.
I have the rifle zeroed at 43 yards and the ballistic calculations show 2 Mils holdover at 75 yards and 4 at 100 and actual shooting confirmed that.
From 3190 psi/220 Bar to the yellow line 9n the gauge brought 34 shots. Should make 28 shots from 2900 psi/200 Bar. I have not touched the factory setting of the regulation or hammer spring. Power with the 18 grain JSBs is 38 ft lbs or 51.5 Joules. The 10% overfill had no affect on the regulation. The Weihrauch gauge shows yellow at 120 Bar. There were actually 3 more shots past the beginning of the yellow zone at 975, 968 and 963 then the next two shots plummeted to 953 and 943. I stopped shooting there as it was about to come a thunderstorm, I picked up everything and barely finished getting all inside the house before it got rough out. The velocities were dropping sharply anyways.
I have the rifle zeroed at 43 yards and the ballistic calculations show 2 Mils holdover at 75 yards and 4 at 100 and actual shooting confirmed that.
Last edited by a moderator:
This velocity works wonderfully for squirrel hunting, the trajectory is so nice and flat. I can zero at 43 yards, the pellet is only about 3/8" up at it's highest point, then it's simple to use a Mildot reticle for holdover for longer distances. The regulator worked fine with a 220 Bar pressure, giving greater than 28 shots if desired, although two full rotary mags seems like a good refill point. With our bag limit being 8 squirrels I'd have to be shooting mighty poorly to run out of air on a hunt before limiting out.