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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to determine B.C.
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<blockquote data-quote="DANTEC" data-source="post: 23114" data-attributes="member: 685"><p>dear GRKLDOC</p><p></p><p>check your Chrony is easy with home stuff </p><p></p><p>put your two Chrony one just on the rear of the other at 3 feets and shoot a Eley TENEX or any match ammo in 22 RIMFIRE match from a good quality rifle ( as ANS54 ) at read the value on </p><p></p><p>1 bullet shot</p><p>average of 5 shots </p><p>average of 10 shots </p><p></p><p>by this way you can check if the reading is near the ammo maker value , 22 rimfire are pretty good in velocity calibration .</p><p></p><p>for hight velocity AR15 in 223 with military ammo is good too .</p><p></p><p>for velocity testing you need to get enought velocity drop to avoid calculus error </p><p>best is 10 meters and 300 meters that give you enought velocity drop .</p><p></p><p>shot 5 shots and make average on velocity by this way you reduce reading error of your CHRONY .</p><p>Note : I know that J36 are costly but you can make atest with any bullets .</p><p></p><p>good shooting</p><p></p><p>DAN TEC</p></blockquote><p></p>
[QUOTE="DANTEC, post: 23114, member: 685"] dear GRKLDOC check your Chrony is easy with home stuff put your two Chrony one just on the rear of the other at 3 feets and shoot a Eley TENEX or any match ammo in 22 RIMFIRE match from a good quality rifle ( as ANS54 ) at read the value on 1 bullet shot average of 5 shots average of 10 shots by this way you can check if the reading is near the ammo maker value , 22 rimfire are pretty good in velocity calibration . for hight velocity AR15 in 223 with military ammo is good too . for velocity testing you need to get enought velocity drop to avoid calculus error best is 10 meters and 300 meters that give you enought velocity drop . shot 5 shots and make average on velocity by this way you reduce reading error of your CHRONY . Note : I know that J36 are costly but you can make atest with any bullets . good shooting DAN TEC [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to determine B.C.
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