25 GT 10 twist

[std7mag]

H2O Case capacity GAP fired 25 GT brass
View attachment 1704800

Interesting!!

Case capacity for your GT is almost the same as my 25WSSM.

I haven't tried any of the 70-75gr bullets in it. I may have to now.
Rifle is a Browning A Bolt SSA with a 23" light varmint barrel.

 

[806guns]

Wildcats sure are fun built on a Zermatt Origin action.
25 GT 10 twist
70gr Blitzking at 3650 fps
95gr Mcquire Ballistics Copper Rose at 3060 fps.
Sporting the AGM Spectrum Mini

 

[806guns]

 

[806guns]

How far would you seat the bullet on the left ? Longer freebore inst made for shorter bullets. Boat tail needs to be past the neck i would think.

 

[Kracken McGraw]

How far would you seat the bullet on the left ? Longer freebore inst made for shorter bullets. Boat tail needs to be past the neck i would think.
View attachment 1734965

I think we should get some more feedback on your bullet seating question. Personally I don’t see why it would hurt the boat-tail to be above the neck if you have at least a bullet caliber length of shank holding below the case mouth.