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7mm Int. Rimmed
MIKE WISKEY
Member Posts: 10,037 ✭✭✭✭
Anybody have experience with one. I just picked up a t/c contender in this with dies & brass
Comments
I have not with that particular one. However, some folks over on handgunhunter's site do. Might check there if you do not get response here.
It amounts to a slight variation of the 7-30 Waters. Different neck angle and less taper. I believe the 7mm Int. came first though. In any case starting loads for the 7-30 is a good starting point.
"It amounts to a slight variation of the 7-30 Waters.".........this 'looks like' a 7x30w with the shoulder pushed back about 1/4".........lots more neck, much less case capacity but a sharper shoulder. I did get some loading data with it
Mike,
The 7mm International that I know does not have the case shoulder pushed that far back. It did have a slightly longer neck than the 7-30 Waters but not by as much as you noted. And, capacity was about the same. I wonder why this one appears short chambered? In retrospect I did not have them side by side to compare though.
If that is the case, then I would start with a fast powder and work from 4-5 gr. below starting loads in a 7-30 Waters to work up to a safe load. The reduced case capacity might well give too hot of a load with starting 7-30 Waters loads. It's a small case but never-the-less, using a faster powder, i.e. AA2015, H4198 will prevent flash-over if you go too light with a load.
In any case, you've got good starting loads to work up from. Let us know how it works out.
it just 'looks like' a longer neck because of the sharper shoulder[:D], some preliminary loads show promise. shown with a .30/30 for comparision. range 110 yards