Sierra 6mm 110 mk g7 bc

[lance2121]

Anybody know what it is?

 

[TheOE800]

http://www.jbmballistics.com/cgi-bin/jbmgf-5.1.cgi

0.310 G7 @ >2600fps
0.306 G7 @ 1900-2600fps
0.293 G7 @ <1900fps

 

[lance2121]

Thanks

 

[Killswitch Engage]

that's not really accurate. with 7tw at 3070fps its around .320 @ 70-80f. with my teammates 8tw @3075 its .315 at same temps.

 

[lance2121]

I'm not a mathematician so here goes, I'm at 2838 at 40 degrees out of a 7.5 twist. What g7 could I use in my ballistic app to get as close as possible to being true?

 

[DocUSMCRetired]

I'm not a mathematician so here goes, I'm at 2838 at 40 degrees out of a 7.5 twist. What g7 could I use in my ballistic app to get as close as possible to being true?

Just use a CDM, and don't worry about BC.

BC is velocity dependent, so it changes constantly as the bullets velocity changes. In order to be truly accurate you need the Segmented BC for that bullet through subsonic. Or you can simply use a CDM. Have a read here: http://appliedballisticsllc.com/Articles/ABDOC130_CDM.pdf

 

[B-P-UU]

Just use a CDM, and don't worry about BC.

BC is velocity dependent, so it changes constantly as the bullets velocity changes. In order to be truly accurate you need the Segmented BC for that bullet through subsonic. Or you can simply use a CDM. Have a read here: http://appliedballisticsllc.com/Articles/ABDOC130_CDM.pdf

Is there a CDM for the 110 Sierra yet?

 

[DocUSMCRetired]

Is there a CDM for the 110 Sierra yet?

Yes