Get some friends Sam. Sounds like a nice safe.
I took my new rifle to my range today. Just got back in.
Fire forming some brass, so I was not expecting very good accuracy. With the .25-06 Improved you take regular .25-06 brass and fire it in your gun with the "improved" chamber. The improved chamber is cut straighter, with less taper and has a sharper shoulder angle at 40 degrees. The shoulder is also moved ahead a bit.
You take a hot load for the regular .25-06 and just shoot it.
I got some nice groups. Some three shot groups had all three holes touching and a 10 shot group was about an inch. I was in the process of "breaking in" the barrel, so I had some fouling shots in the mix that opened some of the groups up to around an inch.
Usually when you fire form accuracy is not as good, so with the potential I have seen so far, this should be an accurate rifle!
I was using Hornady cases with 57 grains of Reloader 19. 85 grain B Tip bullet.
Now that the cases are formed, I will load 10 with 57.5, 10 with 58, and 10 with 58.5. The new case is bigger so they figure a max load with a regular .25-06 is a good starting load for the Improved version.