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Air Gun Home Forum Index » General Air Gun Questions and Topics » Ballistics question    View previous topic :: View next topic  Ballistics question   Posted: Fri Oct 17, 2008 6:57 am Peska Member Joined: 05 Dec 2007 Posts: 61 Location: Guam USA I know that different kinds of pellets have different ballistics coefficients due to shape and weight distribution etc... but does anyone know what the BC of a round lead ball would be? It seems the BC would be the same regardless of the weight, is that right? If so, what is the BC of a round lead ball? Thanks for your help in advance. Peska _________________ God gave us the gift of life. It is the most precious gift ever. To be unarmed is to be helpless to protect that gift; that is outright irresponsible. Ted Nugent   Posted: Fri Oct 17, 2008 7:41 am broommaster2000 Moderator Joined: 10 Mar 2007 Posts: 5714 Location: City of Groningen, Groningen, The Netherlands What I'm wondering is why you want to know. Round balls don't really do that well in Airguns, unless it's large calibers, and even then, I see less ball-like shapes going around. _________________ BIG GAP   Posted: Fri Oct 17, 2008 2:55 pm Slavia Moderator Joined: 31 Mar 2008 Posts: 4382 Location: Waseca, Minnesota, USA Caliber makes a difference also. This chart lists Beeman Perfect Rounds at B.C.=0.014 and Daisy steel BB's at B.C.=0.009 ... http://www.airgunexpo.com/airgundb/pelletbc.cfm And this one lists a .445" lead ball at B.C.=0.063, with .535" at B.C.=0.075 ... http://books.google.com/books?id=Dzxyneq43AEC&pg=PA134&lpg=PA134&dq=round+ball%2Bballistic+coefficient&source=web&ots=6hg0PjzprU&sig=PGwzODYekHnly5FnDBG5k0UxDfo&hl=en&sa=X&oi=book_result&resnum=10&ct=result _________________ ¡Listo! ¡Apunte! ¡Fuego!   Posted: Fri Oct 17, 2008 7:14 pm Peska Member Joined: 05 Dec 2007 Posts: 61 Location: Guam USA Thanks for your input, guys. Appreciate it. I wanted to know, Broom, 'cause I just wanted to be able to compare the ball to different kinds of pellets. I would have thought the BC of a ball would be fairly good, but wow, was I off! The pellet with the best BC that I can find is the Beeman Kodiak and I use that a lot. I was actually considering trying round balls, but after what you pointed me to, Slavia, I am scraping the whole idea and sticking to the Kodiaks. Thanks again to both of ya. Peska _________________ God gave us the gift of life. It is the most precious gift ever. To be unarmed is to be helpless to protect that gift; that is outright irresponsible. Ted Nugent   Posted: Sat Oct 18, 2008 9:58 am cw Banned Joined: 10 Feb 2008 Posts: 1771 Kodiaks are one of Last edited by cw on Fri Jan 23, 2009 9:46 pm; edited 1 time in total   Posted: Sat Oct 18, 2008 10:34 am thepaladin Senior Member Joined: 12 Dec 2007 Posts: 930 Location: TN USA http://home.hiwaay.net/~ispellan/PelletTest02.html http://www.pyramydair.com/blog/2005/09/comparative-pellet-penetration-test.html Thought these might help. _________________ "All that is necessary for the triumph of evil is that good men do nothing." (Edmund Burke)   Posted: Sat Oct 18, 2008 6:49 pm Peska Member Joined: 05 Dec 2007 Posts: 61 Location: Guam USA Thanks for the links thepaladin, just confirms my decision to skip the balls and stick to the Kodiaks. heh heh cw, I use a Benji 392 here in the jungle. It spits out the Kodiaks at around 540 fps so gives me around 13.5 fp of muzzle energy. But since the BC is so high it retains the energy well. At 50 yds it still has about 9.5 fp of energy. I've also been thinking about getting some JSB Exacts. They also have a good BC to retain energy, but since they are lighter, the trajectory will be flatter. What ya think? Peska _________________ God gave us the gift of life. It is the most precious gift ever. To be unarmed is to be helpless to protect that gift; that is outright irresponsible. Ted Nugent   Posted: Sat Oct 18, 2008 7:50 pm cw Banned Joined: 10 Feb 2008 Posts: 1771 Being lighter, they Ballistics question     Air Gun Home Forum Index » General Air Gun Questions and Topics You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum All times are GMT - 5 Hours   Page 1 of 1   All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Select a forum Main Forums----------------AirGunHome Q&AGeneral Air Gun Questions and TopicsPicture GalleryTarget Shooting: Casual, Fun and CompetitionHunting, Pest Control, Varminting People/Events/Airgun Issue Discussion----------------Introduce YourselfThe BS TopicClubs/Events/Regional/Political Airgun Issues Maintenance, Modification and Reviews----------------RiflesPistolsAntique, Collector and Novelty AirgunsBB GunsPellets/AmmoOpticsAccessoriesAirgun Smithing Buy, Sell or Trade Forums----------------For SaleWant to Buy   Note: If you are seeing "Please enter your username and password to log in." 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