MontanaRifleman
Well-Known Member
That would be amazing velocity for a 230. I have not heard of many getting that from a 200g AB with that barrel length. Given this kind of performance with the 230 berger you should be able to run the 177 up around 3700fps.
The faster you push the GS the better the bc should be. As it slows it will degrade. When you get up over 3500 fps this should be so.
If the Berger sheds half it's weight in the first few inches you are left with 115g to finish the job. VS 142g in the GS at 80% retention. Momentum is definitely on the side of the GS.
Steve
There is a member getting close to 3250 in a 32" non-nitrided barrel with RL33 and the 230's. RL33 is the big kicker here. It's a very slow powder and my 27" barrel may not take advantage of it as well as a 32" barrel. Time will tell as soon as I get it back together from nitriding.
33 is going to be too slow for the 177's, so that is why the discrepancy in my "predicted" velocities.
At slower velocities, the Berger will retain more of its mass. How much I don't know. But I do know it will arrive at the target with close to 30% more mass than the 177's. As far as bullet integrity goes, the GS bullet will have an advantage in momentum but the mass shed by the Berger will also do some damage.