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I don't shoot BH, but I find their data invaluable when comparing what ML bullets are doing..
A few years ago, I averaged all the 250gr and 300gr projectiles their site listed, for each of the 3 loads (Vol/Weight: 80/56, 100/70, 120/84) Along with the corresponding BC of bullets (as many as I could), I recall throwing out 1-2 of the really 'optimistic' ones.
For those of use who enter into the LR world (past 200) with a ML, the link below gives some great examples of bullets that perform properly at lower speeds and those that do not.
In Ron L. test, he test at 80grV and 50grV. He believes these represent 1600 & 1200 fps respectively with a 250gr bullet. Obviously, 300gr bullet will be 75 fps less as shown in my BH209 data.
Here is Ron L. test that he's put a lot of time into.
http://www.rchs61.org/completecapture.htm
I put some information together for reference to show the approximate distance that bullets reaches the corresponding speed (Velocity). I did it for the 3 loads and both 250g & 300g bullets. I also briefly show the Muzzle Energy and the ending Energy.
Example: If your load is a 250gr bullet over 80grV, your MV is 1709. At 30 yards the bullet is at 1600 fps; at 175 yards it's down to 1200 fps (which is where we think the 250g bullets are with Ron's 50grV test).
I noticed a few things.
1- additional 20gr in one's load gives just over 200 fps; roughly 100fps/10gr
2- Distance in both 250g & 300g bullets travel about 40-50 yards/100fps loss, with all 3 loads.
A few years ago, I averaged all the 250gr and 300gr projectiles their site listed, for each of the 3 loads (Vol/Weight: 80/56, 100/70, 120/84) Along with the corresponding BC of bullets (as many as I could), I recall throwing out 1-2 of the really 'optimistic' ones.
For those of use who enter into the LR world (past 200) with a ML, the link below gives some great examples of bullets that perform properly at lower speeds and those that do not.
In Ron L. test, he test at 80grV and 50grV. He believes these represent 1600 & 1200 fps respectively with a 250gr bullet. Obviously, 300gr bullet will be 75 fps less as shown in my BH209 data.
Here is Ron L. test that he's put a lot of time into.
http://www.rchs61.org/completecapture.htm
I put some information together for reference to show the approximate distance that bullets reaches the corresponding speed (Velocity). I did it for the 3 loads and both 250g & 300g bullets. I also briefly show the Muzzle Energy and the ending Energy.
Example: If your load is a 250gr bullet over 80grV, your MV is 1709. At 30 yards the bullet is at 1600 fps; at 175 yards it's down to 1200 fps (which is where we think the 250g bullets are with Ron's 50grV test).
I noticed a few things.
1- additional 20gr in one's load gives just over 200 fps; roughly 100fps/10gr
2- Distance in both 250g & 300g bullets travel about 40-50 yards/100fps loss, with all 3 loads.
