I went to the local Sportman's warehouse and the highest BC 7mm bullets I could find were 154gr Hornady IB's. I loaded them up with some 4831SC and headed for the hills. When trying to zero the rifle I was supprised that it was grouping over 1 MOA. I was expecting much better even for the first few shots (I've always had better luck in the past). I decided to try at long range (585yds shooting at eggs), I was sorely dissapointed with the performance. I would estimate the group at 585yds to be nearly 10", not good enough to hit eggs! It was a frusterating first outing with the rifle. To verify that the changing wind wasn't messing me up I shot my 243 and egg yoke was flying.
Fast forward a few weeks. My 175gr SMK's and 180gr VLD's came in. I decided to go out on a limb and try H4350 with the SMK. I use 4350 with my 243 and it's extremely accurate. I used 57gr with a Rem Mag primer. I could tell it was better when zeroing the rifle group was .3" at 100yds. I tried the long range and was impressed by the accuracy of this experimental load. I'd guess the group at 585yds to be arround 3" for 5 shots. Hitting eggs was not too hard to do. A fist sized rock could be struck continuously until there was nothing left of it. It was a big relief to see the rifle perform. The trajectory was very good as well, I was using 9.5 MOA for 585yds with a 100yd zero. I wasn't able to chrono the load, but the trajectory would suggest a MV of arround 3100fps (the 175 SMK has a .608 BC). I plan to try some RL-25 and give 4831SC another try with the new bullets. Can't wait to test these loads at 1000yds.
Here's some pics, a family friend came and enjoyed some shooting as well. My son also came along but he stuck with the 22lr.
Here's the 7wsm along with my 243
Here's some pics of my friend shooting the 7wsm (the bare spot on the other side fo the valley is 585yds)
For good measure here's a pic of my son shooting eggs with a 22lr from 135yds
Here's a link to another thread about my 243 with pleanty of pics from our shooting area in WA.