? for cayugad
 

Hey man what is the equivelent to 80 grains of bp using 777?thanks:D

RE: ? for cayugad
 

100 grains of Triple Se7en is said to be equal to 115 grains of Goex 2F. When you think of black powder power think in term of Pyrodex and you will be real close. I shoot a lot of Goex 3f and then load that as I would load Triple Se7en powder....

Actually you have to play with the loads a little and see what burns best. If your rifle shoots excellent with 100 grains of Triple Se7en it might get the same accuracy with 100-115 grains of Goex 2f.

That's also why they suggest lower charges of Triple Se7en in many owners manuals because it is said to be 15% stronger. But in all honesty I have never put it over a Chronograph and tested the two...

RE: ? for cayugad
 

Thanks:D

RE: ? for cayugad
 

There's no exact science on power/energy/trajectory/speed difference. All the 15% talk mostly points to "minimum" differences... not average differences.

Recent message board studies by heavy conical users indicate that the variance is closer to 30% when using heavy, slip-fit conicals in larger diameter bore rifles. One thread at another ML website had several posts where 65 grains 777 were showing the same 100 yard trajectories as 90 grains Pyrodex P.

The best decider/evaluator is you at the range. Because your bore is different than your neighbor's exact same model (and) your bullets are bigger or smaller than mine (or) your powder may be the same but two years older & stored differently..... you see.. there are a host of reasons why you need to do range work for best results in your ML.

RE: ? for cayugad
 

I agree that you have to do your own testing. I bought a chronograph and it has told me that recoil does not mean higher velocity. Tripple Seven kicks like a mule but Black Mag'3 outshoots it for velocity without the kick (at least in my rifle but like we said you have to do the work in your own rifle). Another site poster is saying he cannot get the velocity with BM3 but is shooting short barrel and light bullets (patched balls). Again everything depends on the variables.

RE: ? for cayugad
 

He's probably patch-burning or shredding. He could get some of it back by changing lubes or adding wads. Then there's another chance that he has some problem BM3 powder by-means of contamination or age.

High-power powders like BM3 & 777 perform to their rightful duties with heavy conicals/sabot/bullets & magnum powder charges. That's usually where they shine brightest.