Anyone have ballistics info for the Barrett m33, 661 gr .50? I'm looking for BC, and sectional density.
Thanks
Chef
Thanks
Chef
Range Report .50 cal ballistics info?
- Thread starter ChefEd
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Re: .50 cal ballistics info?
Sectional density is 0.363 lb/in^2.
You can figure sectional density from caliber and weight with the formula:
SD = bullet weight/7000/caliber^2
For example,
SD = 661/7000/.510^2 = 0.363 lb/in^2.
-Bryan
Sectional density is 0.363 lb/in^2.
You can figure sectional density from caliber and weight with the formula:
SD = bullet weight/7000/caliber^2
For example,
SD = 661/7000/.510^2 = 0.363 lb/in^2.
-Bryan
Re: .50 cal ballistics info?
Take a look at this. This should have what you are looking for.
http://www.barrettrifles.com/ammunition.aspx
Its doesn't have the BC but its has dope for that round out of a Barrett rifle. So that might be even better than the BC.
Take a look at this. This should have what you are looking for.
http://www.barrettrifles.com/ammunition.aspx
Its doesn't have the BC but its has dope for that round out of a Barrett rifle. So that might be even better than the BC.
Re: .50 cal ballistics info?
According to that dope, the BC is in the neighborhood of .63ish.
According to that dope, the BC is in the neighborhood of .63ish.
Re: .50 cal ballistics info?
Thanks guys,
Bryan thanks for the info, "SD = 661/7000/.510^2 = 0.363 lb/in^2." WTF,
Man you'r talking to a guy that is straight out of the South Carolina public school system, I'd love for you to go over that one again.
And how did you figure out the BC by the dope on the Barrett site. I'd love to know how to do that as well.
I've been reading some of your other posts, fascinating stuff, it's nice to have your expertise close at hand.
Thanks for your time,
Chef
Thanks guys,
Bryan thanks for the info, "SD = 661/7000/.510^2 = 0.363 lb/in^2." WTF,
Man you'r talking to a guy that is straight out of the South Carolina public school system, I'd love for you to go over that one again.
And how did you figure out the BC by the dope on the Barrett site. I'd love to know how to do that as well.
I've been reading some of your other posts, fascinating stuff, it's nice to have your expertise close at hand.
Thanks for your time,
Chef
Re: .50 cal ballistics info?
Read "The Complete 50 caliber. Snipers Course" by Dean Michelis. I don't know if I spelled his last name right but that book has to ton of knowledge on the 50BMG to say the least. Its a big book about 600 pages and well worth it. You will learn how to correct for any type of conditions out there. Its a must read for 50BMG shooters. Some of the math is very complex bu at least you will know how to do it if you want.
Read "The Complete 50 caliber. Snipers Course" by Dean Michelis. I don't know if I spelled his last name right but that book has to ton of knowledge on the 50BMG to say the least. Its a big book about 600 pages and well worth it. You will learn how to correct for any type of conditions out there. Its a must read for 50BMG shooters. Some of the math is very complex bu at least you will know how to do it if you want.
