your only real choice for that kind of velocity with only a 27" tube would be the 7wsm and i think 2900 fps could be attained with a 180g bullet,with the 168g getting over 2900 fps should not be much of a problem.in my experience and by evaluating published velocities the short mags just dont seem to push the heavy bullets as easily as their long belted cousins,my 2-dave
MontanaMarine,Have experimented with 8 wildcats for the 162 to 180gn 7mm bullets.Tried 7mm rem mag AI& then shortened it buy 100 thou,then 250 thou then 500 thou,as well as a7mm/6.5 rem mag imp and a 7/300 wsm and then a very slightly improved 284w.I am going now to a 280 AI with RWS brass very shortly.Good brass is the key and the cartridges you mentioned suffer in this area.Cut a long story short the cartridge with the lightest charge that you can pull the trigger on 5 times at least and still be able to use the brass as well as get your magic 2900 fps is the 280 AI(use the RWS stuff).This round forms easily and if you do the right things before you pull the trigger the first time the case should be competition ready at the second firing.We make our own reamers so it's easy to experiment,i have had a drawing of a cartridge i did about 3 years ago that i will test at the same time as the 280AI in a different rifle,it's based on a 9.3x 64 necked to 7mm(.309dia),shortened to 60 mm with a 35 deg shoulder.I don't think there will be much between the 2 except a lot of work..Jr..Jeff Rogers
Short action is right. I realize with those long Berger bullets it would be a defacto single-shot. No biggie. Just trying to decide on a cartridge for now. I've pretty much settled on a 7mm for the high BC bullets, and low to moderate recoil.
6BR,I am afraid it won't matter what case he uses in a short action if ejecting a live round is a consideration.I have had short actions with a 300 ack chambered and you can't get the brass itself out with the std opening ,it has to come out the back.Even with the shortest(7mmWSM)with the 180 Berger placed in the right spot will be .250 to long and a magazine is out of the question..JR
sounds like a real pain in the butt ejecting rounds out of the back,and in the wsm he would have to have some work done anyways to get cases to feed out of a magazine,i personally shoot everything single which is not a big deal,but taking the bolt out -or almost out everytime to eject just doesnt seem worth it.i do agree that the 280ai would be a good choice though,but with the short action just doesnt seem like much fun-lol-my 2-Dave