What is the ballistic cooeficient of the 200 gr. .40 cal Beartooth bullet? I'm thinking about approximating the old Winchester HV load (180 gr @ 1775 fps) for use in an '89 Marlin, by loading the 200 gr. bullet to 1600 fps with RL7.

Yes, I know I can buy a .35 Remington for $250 and beat it, but . . . I guess inquiring minds want to know.

You shouldn't have any problems with that, so long as it fits the barrel. I'm shooting them out of a Ruger Blackhawk in 38-40 (Buckeye convertible) at 1500 fps with no problems. They work well in my 10mm Auto also. I just burned up the last of my supply at a bowling pin shoot today.

I don't have extensive experience with this bullet, but it's worked very well so far.

I can't answer your BC question, but I'll tell you that the best way to figure trajectory with rounds at these velocities is to go shoot them at various distances. BC is variable at different velocity levels. At any rate, I've not found the BC ratings of many handgun type bullets to be all that accurate shooting out to 200 yards, not precise at least.

You can get pretty close by looking up the bluntest jacketed bullets that you can find, in the same caliber or similar.

Example:

Sierra .40 cal 190gr. JFP, BC is .190 to .212 depending on velocity;
Sierra .41 cal 210gr. JHC, BC is .165 to .210 depending on velocity.

Note, most bullet manufacturers only publish one BC number, even though this actually changes with velocity.

I generally figure .2 for blunt, heavy-for-caliber cast bullets, and that's probably going to be within 10% in most cases.

Hope this helps.