7mm Rem. Mag and Winchester Supreme 780

[ojibweindian]

Warning!
The data listed in this post is at, or above, the maximum published data. Do not consider my loads to be a short cut to a proper, and safe, load developement process.

The 7 mag. has been one of my pet cartridges for a long time and some of your observations are consistent with mine. I don't load with 780, I use RL22 instead, but still, I have much in common with you in regard to the results. I've been running 139 gr. - 145 gr. standard production bullets most of the time, Sierra's, Hornady, Speer, and Nosler and have found that they will all produce very good groups when my powder charge is up near or above max if the bullets are seated to / into the lands, using CCI-250's, and mixed head stamps necked, and, or, partial FL ( shoulder's maintained ) sized.

Any more I don't start my load developement below mid data range, it's just a waste of good powder and bullets. I wasn't surprised last year when I was working up a load for a 130 gr. Speer BT and started the RL22 load at 70.0 grains. I was consistenly shooting sub MOA groups right from the get go.

Your post has made me want to give that 780 a try. Good stuff you posted here, and thanks!

You're welcome

 

[Clark]

I am a big fan of the 7mmRM for long range hunting.

I have drifted away from Re22 and have gone to the temp stable Hodgdon powder H4350.

I have moved away from the 180 gr VLD because it was not stable at long range in my barrels, and back to the Ballistic Tip bullets for 2011. I may get a faster twist barrel in 2012 and try the 180 VLD again. I did kill 3 animals in 2010 with the 180 VLD, but I had real problems with it.

 

[Skyshot]

Sorry, my last post was a bit confusing even after I read again. What we found in testing was the 62.5 grn load was not consistant at temps below 20 degrees F.( even with mag primers ) so we bump it up to 63. grains still had the same accuracy and velocities were very close shot to shot. I shoot a REM700 and my two buddies shoot a Savage 110 and a Weatherby, we have a lot of variance between those three rifles as far as AOL is concerned. They seem to do best between .010 and .018 off the lands. Taken a lot of whitetales, bears and couple of caribou and moose with that load. It works.