7mm weather mag
- Thread starter parkes
- Start date
Thar
Well-Known Member
What bullet weights or you using? Here is one for 154gn heads.
Viht n560:- 65.7gns maximum, with Winchester magnum primer should give you 3000fps out of a 24” barrel.
Start your loads at 55gn and work up watching for signs of high pressure, from what I have read most magnums give best accuracy towards there maximum powder fill.
Do not exceed the above.
Thar
Viht n560:- 65.7gns maximum, with Winchester magnum primer should give you 3000fps out of a 24” barrel.
Start your loads at 55gn and work up watching for signs of high pressure, from what I have read most magnums give best accuracy towards there maximum powder fill.
Do not exceed the above.
Thar
here's one... from my speer manual
160 gr speer grand slam. 70.5 gr of re 22 will give 3079 fps. this is max. starting is 66.5 gr. on a magnum primer.
175 gr speer grand slam,
67.5gr of re 22 gives 2866 max.
what powders do already have in? we might as well look for one using that.
swampy
160 gr speer grand slam. 70.5 gr of re 22 will give 3079 fps. this is max. starting is 66.5 gr. on a magnum primer.
175 gr speer grand slam,
67.5gr of re 22 gives 2866 max.
what powders do already have in? we might as well look for one using that.
swampy