Interior dimensions of magazine as well as the distance from the front of the charger hump to the receiver ring.

-Spencer

front of charger hump to rear of front ring -3.250"

front to rear of interior of mag - 3.060"

width of mag at widest point - 1.010"

Thanks Marc.

were these what you needed? There were several different mag dimensions, so I just picked the biggest ones. just let me know if oyu need more

Yes, these were fine.

Now that I think about it, all I really needed was length of the magazine.

I wanted to see if it would fit the 405 Win.

It does.....