Geeze your running close to the same velocities as my RUM with a 7gr heavier bullet getting a little better than 3200 with a 168gr berger vld h1000 87grs of itI have had both. I'm sticking with my stw. I ended up selling my rum because it use more powder then the stw with no more gain. I was able to do it with less powder in my stw. So now I'm having a new stw built with a 7.5 or 8 twist to run the heavy mono's. It's probably going to be a single shot so I can run the bullets long. My current stw now is a factory sendero running the 175 eldx's at 3185fps at 2000 feet with rl26.
"If" you search, there is plenty of information on both chamberings; There is also a 7MM STW forum.Thanks im building a 7mmRUM right now but i was curious about the stw just because ive heard it mentioned quite a bit. The rum im building we are just working up some load data on it and tried it with 168gr bergers just for their reputed accuracy. We've chronographed the load at 3240 to 3260 with the 1/9.5 twist 26" barrel the two cold bore shots i took with it went through the exact same hole no widening of the hole or anything. My reloading guy says we should try a few tenths of a grain up and down from that load .im not sure you can get better than perfect but hes adamant about it. But as you were saying im surprised at how deep were having to seat these bergers. We are also using h1000 and 87 grains of it
I've only shot the 7RUM just curious if anyone has an unbiased assessment of both calibers
I guess that's why the 7 RUM has all but disappeared, Yeah it's a tad faster but with all that freebore they didn't impress too many folks, Most all of us tried the 7 RUM. The STW is still the KingRUM has the bigger case, bigger case more speed period.......keep the pressures the same and you'll see that the RUM is the speed king between those two.
Side note and observation over the years I've noticed 3 cases where people hot rod the heck out of them in the name of speed and the STW and 280 AI are two of the 3...............now wait for the believers to loose their tootsie rolls