Taipan Mutant STD 5.5 cal Ballistic Coeficient
Hi guys.
I just share with you some results of Ballistic Coefficient (BC) calculations on my Taipan Standard 5,5 caliber. I did this experiment as follow:
1. Method of 2 Crhonys
2. I measured the muzzle speed and then at 30, 50 and 70 meters.
3. I Use the chairgun calculator in order to estimate each BC by shot.
I founded a very high BC, pretty high above than the manufacturer data which is 0.033.
Cheers,
All Replies
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Mitre,
It’s possible the BC increase the value at highest distance?. Did you measured the B.C. under different environmental conditions?.
By the way, if you apply the formula for the speed according to the second graphs, you will have about 632 fps up to 100 meters. Introducing the data on chairgun calculator you will have a 0.0362 BC value!, very close to your value at 100 meters as well.
Best regards,
my mutant is set to 266 m/s or 873 fps at the muzzle , BC (after chrony at 50 meters ) is 0.0353 and after chrony at 100 meters BC is 0.0379 for 18.1
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Yes Baske, it’s possible. Check out video “EDgun .22 VS .25 part 2” from about 14th minute. There also BC increase at higher distance.
I made test for BC @ 50 and 100 yards at the same day, same condisions inc. wind (actually there was no wind :biggrinn: ) and temeperature (about 20 degrees in Celcius) Chronograp showed 266m/s or873 fps at the muzzle then about 218m/s or 715fps at 50 meters and 184m/s or 603fps at 100 meter. After some calculations Chairguns show that BC for 50 meters range should be 0.0353 and for 100 meters should be 0.0379
Chairgun never show you identical values which are in reality but it’s very helpful