When I bought all that reloading equipment off Dock, I got a bunch of components as well: lots of Winchester FMJ bullets. The trouble is, I have been having a dog of a time trying to find information about them for running numbers. You look at the Winchester website and while it lists the products, it doesn’t list information like their ballistic coefficients.
But I think I have found them. Winchester has their own ballistics calculator and it’s pretty neat. I haven’t used it much because the data in the app is purely Winchester products, so it’s not that generally applicable. However, it’s that very product-centric setup that yielded results! I just plugged in their products and this is what it yielded.
Winchester 30 caliber (.308″), 147 grain FMJ BT bullets (WB762147N) have a B.C. of
Winchester 22 caliber (.224″) 55 grain FMJ bullets (WB556MC55) have a B.C. of
So that’s what the app told me, and I can only assume it’s right, tho I may be making a small leap in determining all of this. But it seems about right given other bullets of those same profiles.
Just recording it here for posterity sake.
Updated: James Rummel reposted my search for information. Thanx, James!
The thing is, the best way to get this information is to go straight to the horse’s mouth. When I first did this well, I knew that was the right thing to do, but I just couldn’t find a phone number. After James’ post I figured I should try again.
After more Google work I was able to find the phone number for Winchester Ammunition (800-356-2666). I called, pressed “3” for technical questions, and left a message asking for the data. When/if I receive a callback, I’ll update it here.
Updated 2: When I left a voice mail at Winchester it said I’d get a callback within a business day. I didn’t hear back today so I called again. This time the phone message changed to say they were out for Christmas vacation, back January 3. Well, that explains why I didn’t get the callback. 🙂 Cool that they get 2 weeks off. I’ll set a reminder for myself and call back first week of January.
Updated 3: It’s January 3, 2011 and I called Winchester at the above number. I asked for the B.C.’s of those 2 bullets and received them! I updated the above entry with strikthru’s and the proper numbers.
So, the B.C. listed in their little online calculator is for whatever bullet is in their loaded ammunition, which apparently is slightly different from the bullets they sell as components. I guess? Kinda curious how they’re different numbers, but there you go. I would have liked to discussed this further on the phone with the gentleman, but it was their first day back after 2 weeks vacation and they were VERY busy playing catch-up, so I got my information, wished him a Happy New Year, thanked him, and hung up. So, there you go.