So I got myself a Chinese-made E-9800X chronograph for $55 from Amazon. After setting some pellet weights into the memory I proceeded to run some shots through the device in my backyard, at about 50 deg F and 1K ft elevation. I don't have '10-shot strings' to report, still 'experimenting' with rifle(s) pellets and the chronograph itself (I did learn how to tape the battery cover on after the third shot blew it off 
).
I managed to run 6 different pellets (3 shot strings) through both my HW30S & HW50S (both .177) to obtain FPS & FPE readings. The unit works quite well once you get the hang of muzzle placement relative to test tunnel entrance.
Based on my 'limited' experience I can say that H&N Excite Hammer 7.87gr domes was one of the most consistent performers I tried (658fps/7.57fpe-30S, 809fps/11.44fpe-50S) even though it's a relatively inexpensive pellet; hi-lo deviation 8fps/.18fpe on the 30S. The 50S seemed to like H&N Terminator 7.25gr (858fps/11.84fpe). Lightest pellet was H&N HP Sport (7.1gr; 666fps/6.99fpe-30S, 851fps/11.43fpe-50S) while the heaviest was H&N Barracuda XT (9.57gr; 547fps/6.35fpe-30S, 698fps/10.36fpe-50S). Got slightly disappointing results from the 50S with AA Diabolo 8.4gr (740fps/10.22fpe) but I think they are 4.50 skirt pellets(edit: 4.52 skirt). I'll keep testing them since I've got 4 tins.
This is my initial experience with a chronograph, but definitely not my last. I love the technical info obtained from testing and am posting it here for all to examine. Feel free to comment on my results and hopefully I'll get better at testing, recording & posting. I'm curious about things such as air temp, elevation, newness of my rifles (both brand-new, 50S has a Vortek SHO kit installed) and similar aspects of testing. Still learning every day!
).I managed to run 6 different pellets (3 shot strings) through both my HW30S & HW50S (both .177) to obtain FPS & FPE readings. The unit works quite well once you get the hang of muzzle placement relative to test tunnel entrance.
Based on my 'limited' experience I can say that H&N Excite Hammer 7.87gr domes was one of the most consistent performers I tried (658fps/7.57fpe-30S, 809fps/11.44fpe-50S) even though it's a relatively inexpensive pellet; hi-lo deviation 8fps/.18fpe on the 30S. The 50S seemed to like H&N Terminator 7.25gr (858fps/11.84fpe). Lightest pellet was H&N HP Sport (7.1gr; 666fps/6.99fpe-30S, 851fps/11.43fpe-50S) while the heaviest was H&N Barracuda XT (9.57gr; 547fps/6.35fpe-30S, 698fps/10.36fpe-50S). Got slightly disappointing results from the 50S with AA Diabolo 8.4gr (740fps/10.22fpe) but I think they are 4.50 skirt pellets(edit: 4.52 skirt). I'll keep testing them since I've got 4 tins.
This is my initial experience with a chronograph, but definitely not my last. I love the technical info obtained from testing and am posting it here for all to examine. Feel free to comment on my results and hopefully I'll get better at testing, recording & posting. I'm curious about things such as air temp, elevation, newness of my rifles (both brand-new, 50S has a Vortek SHO kit installed) and similar aspects of testing. Still learning every day!
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