I had a load worked up for a Rem 700- 243 Sporter for a 80g Sierra BT "blitz" with IMR 4064 with a Fed 210 in a Rem case that is extremely accurate(1/2" at 200 yds).
Just for grins I tried the HV 100. With the Fed 210's, 43.2g proved to be were the accuracy node was with this rifle; using the 80g Sierra touching the lands produced 3- 1/2" at 200. I switched out primers to the 9 1/2 and CCI 250. The 9 1/2 shot the same size as the Fed 210's, but the CCI 250 allowed the group to shrink to where all the bullets were touching at 200.
I repeated the same load with the CCI 250's and shot three groups that averaged .318, which isn't half bad for a sporter.
I went to 300, and the wind was starting to get squirrely, the groups were stringing about 1 1/2" as was correct by the wind flag.
This load with the HV 100 stomps my load with IMR 4064. I did shoot the 4064 side by side with the HV 100 at 300 yards, both loads shot to the same point of impact, and a while back, I checked the velocity of the IMR 4064 load at 3450 fps.
I have a 6-24 Pentax on this rifle.
This is obviously a great powder for a 243 with the mid weight bullets and it obviously likes the CCI 250's in my rifle.
I thought that this may be interesting for you 243 freeks out there. Of course, your rifle may like a different charge, as did my shooting partner that was working up a load next to me. His rifle loved the 80g Sierra with the CCI 250, but his Ruger had to use more powder than my rifle.
Just for grins I tried the HV 100. With the Fed 210's, 43.2g proved to be were the accuracy node was with this rifle; using the 80g Sierra touching the lands produced 3- 1/2" at 200. I switched out primers to the 9 1/2 and CCI 250. The 9 1/2 shot the same size as the Fed 210's, but the CCI 250 allowed the group to shrink to where all the bullets were touching at 200.
I repeated the same load with the CCI 250's and shot three groups that averaged .318, which isn't half bad for a sporter.
I went to 300, and the wind was starting to get squirrely, the groups were stringing about 1 1/2" as was correct by the wind flag.
This load with the HV 100 stomps my load with IMR 4064. I did shoot the 4064 side by side with the HV 100 at 300 yards, both loads shot to the same point of impact, and a while back, I checked the velocity of the IMR 4064 load at 3450 fps.
I have a 6-24 Pentax on this rifle.
This is obviously a great powder for a 243 with the mid weight bullets and it obviously likes the CCI 250's in my rifle.
I thought that this may be interesting for you 243 freeks out there. Of course, your rifle may like a different charge, as did my shooting partner that was working up a load next to me. His rifle loved the 80g Sierra with the CCI 250, but his Ruger had to use more powder than my rifle.