Buy one of Constructor's barrels, a super bolt, and never look back. There are 1000s of post of the net proving the accuracy of his barrels and his service is top notch. He's a great guy to chat with about any questions you may have as well.
That certainly wasn't my experience. To be fair though, mine wasn't a 6.8 barrel. He may be good to go on 6.8 stuff but I wouldn't recommend any sort of wildcat chambering from him.
Dan, You couldn't figure out how to size the brass correctly and you know it. If you push the shoulder back too far you get false pressure signs from excess headspace. I shot it with no problems. A gave it to a guy and he is shooting it with the exact same loads I have listed on the website just like everyone else that has one of those barrels.
Yeah, that's funny, since I sent my brass back to you to verify, and you didn't have a gauge to measure it. I also emailed and posted pics of measuring the shoulder on my brass bumped back .004". Funny how you change your excuse every time this comes up, and none of them are true.
We could air all the issues you couldn't address with that one if you really want, but your post is just another example of typical "top notch service" from you - blaming the customer for problems with your barrel and loads.
There's an awful lot of people using those loads and posting about them. You are the only one that couldn't. Here's the tested pressure data from the same batch of barrels.
Added- Using SSA brass. Federal brass has .8gr less capacity.
28.5gr 1680 behind a 125 TNT hit 2500fps out of a 16" barrel.
29.5gr 1680-apx 2570- accurate with 125gr Speer TNT and Hornady SST
30gr 1680=2594fps--54925psi
30.5gr 1680 =2655 --57053 psi max(meaning do not try or use more powder than this)
30.5gr 1680 is pretty much max with 125gr bullets. The 125 Sierra prohunter hit 2600+- and the 125 Nosler hit 2680 with the same charge. The Sierra has more bearing surface, may be why it was slower.
