PDM bullet info (from 300 prc thread) AB % or bullet bc values ect....

[Schw15]

Trying to move the info to this thread so people can see it better and not take away from the 300 prc thread.

Idea to post info on bullets from bc values to the sd % ect.

 

[Papamo]

I didn't realize I posted in the 300 PRC thread. Was not trying to derail it.So I'll post it here.
Edit: 28 nosler, 28" Hawk Hill barrel, TBAC 338 ultra

 

[Schw15]

View attachment 7893412
I didn't realize I posted in the 300 PRC thread. Was not trying to derail it.So I'll post it here.

I think we all derailed it. Just talking about all that. But at least we have a spot for this.

 

[Papamo]

It will be interesting to see others PDMs with different bullets, my PDM seemed pretty accurate, I just rounded down or up depending on what I saw downrange

 

[Taylorbok]

I didn't have a chance to shoot through the AB radar, I trued it up myself and had to drop the BC when it was nearing trans.
I trued my bc at 1820 yards during practice, then when I shot the 2100 I was low, this was the amount of correction I needed to be on target. I was also shooting these out of a 300 RUM 1:9 barrel 32" so possibly under spinning them a bit, I did manage to blow one up.

250 A-tips @ 3040 fps
.440 G7
.404 G7 at 1350 fps

 

[high right]

300PRC, 31" Brux 9 twist. For what it's worth

 

[parshal]

I just rounded down or up depending on what I saw downrange

Rounded velocity? I had to reduce velocity after four stages after I started shooting low.

 

[Papamo]

Rounded velocity? I had to reduce velocity after four stages after I started shooting low.

I just dialed a 1/10th down or up, left the PDM alone

 

[kupper]

Wasn’t real happy with my ES but the gun shot fine. Only had one target where I missed low right under so I held just over top and that’s where I hit. That was the only notable miss due to ES/BC sd. My PDM only had 7 because I was sticking rounds in my chamber and having to remove them with a cleaning rod during the PDM

 

[Taylorbok]

Can someone explain to me why the BC seems to spike at transonic?

It'd be nice if you could read the graph better so you could model it yourself in other calculators. I use Strelok Pro.
I haven't used the AB in a Kestrel but I bought the app and man is it clunky compared to the Strelok.