Advice for reloading the 7mm weatherby

[dysphonic]

Hi there,

I am about to start reloading a 7mm weatherby mag in a mark v weatherby and would value some advice from those of you who have done so.

Normally when I begin a load work up I start by focusing on the powder charge. I tend to seat the bullets 0.01 - 0.02 off the lands (unless i am loading barnes tsx then i start at 0.04) and leave it there until I have identified the powder charge I will use. When that is done I play around with seating depth to see if I can tighten the groups.

However, with the extra free bore in the weatherby mark v I understand that it is unlikely I will be able to get that close to the lands.
Should I instead use magazine length as a starting point and if so how far off that length should I back off-in terms of bullet seating?

Your thoughts and suggestions would be much appreciated.

Cheers

 

[MudRunner2005]

Hi there,

I am about to start reloading a 7mm weatherby mag in a mark v weatherby and would value some advice from those of you who have done so.

Normally when I begin a load work up I start by focusing on the powder charge. I tend to seat the bullets 0.01 - 0.02 off the lands (unless i am loading barnes tsx then i start at 0.04) and leave it there until I have identified the powder charge I will use. When that is done I play around with seating depth to see if I can tighten the groups.

However, with the extra free bore in the weatherby mark v I understand that it is unlikely I will be able to get that close to the lands.
Should I instead use magazine length as a starting point and if so how far off that length should I back off-in terms of bullet seating?

Your thoughts and suggestions would be much appreciated.

Cheers

Yes, magazine length will do just fine. That's what I do for my .257 Wby. I just seated them about 0.005-0.010" shy of the magazine length.

 

[thatguyshm]

Yes, magazine length will do just fine. That's what I do for my .257 Wby. I just seated them about 0.005-0.010" shy of the magazine length.

+1. I do the same exact with my 257 WBY SUB MOA. Just check case length often as they like to grow if you shoot warm loads.

 

[dysphonic]

Excellent. Thanks for the replies