there you go Danny. RR shoots some serious power, if it works for him, it will work for a rem mag.

Thanks to both of you.
Its odd. I was able to look at Reloader Magazine (09 annual addition). it showed that the test loads listed in there, including the IMR 4831, for the 7Mag used a Winchester Large Rifle Primer. Yet in the 2 manuals i've seen so far they all recommended a Magnum primer.

So,
I've already loaded up the 5 with CCI 200 primers. I bought the Winchester Large Rifle primers and loaded up 5 using them.
I still can't find any magnum primers locally

We will see what happens this weekend when i try them.

OK
Got to shoot the first few loads this weekend. The best news of all... I didn't blow up myself or my gun. Pulling that first trigger was actualy pretty scary.

Anyway. I loaded 5 bullets of each 56.5g, 57g 57.5g and 58g IMR 4831 154g hornady bullet

Not very impressive grouping. Ranged from 1 1/8 to 2 2/8, 5 shot groups.
The funny thing was that each group was horizontally almost perfect. The groups were always strung left to right.

Another note. 3 of the 4 groups were under an inch with 1 hole outside the tight grouping obviously expanding the overall spread.

Lastly, each spread increased with the powder charge increase.