overexpanded shell base 300.WM

[sailnaked]

i dont get a lot of range time, so I may have cut a corner. I loaded 67g of imr 4350 in a lapua case with 208g hornady ELD match. the book says 66.7 is max at 2800fps well my max speed was 2935 and min was 2814 std dev of 4.9 ok so there are the numbers, the result of my FAFO is that the shells are now .01 too large at the base and will not resize in my rgbs the question is: is there an accurate way to recover 50 cases or do I have to set these aside and label them as different. I know I can just size them as is and shoot them again, but I suspect that they will not track well with normal cases.

 

[supercorndogs]

What "the book"? Did "the book" use a lapua case? FYI. Over book max is usually not the place to start your load work up. Will the case hold a primer? If so, some base sizing may fix it. None of the 4350s would be my choice for 200+g bullets in the 300wm.

 

[PhrogDriver]

i dont get a lot of range time, so I may have cut a corner. I loaded 67g of imr 4350 in a lapua case with 208g hornady ELD match. the book says 66.7 is max at 2800fps well my max speed was 9352 and min was 2814 std dev of 4.9 ok so there are the numbers, the result of my FAFO is that the shells are now .01 too large at the base and will not resize in my rgbs the question is: is there an accurate way to recover 50 cases or do I have to set these aside and label them as different. I know I can just size them as is and shoot them again, but I suspect that they will not track well with normal cases.

This is probably what you seek; works great on my .300 WinMag brass.

https://www.larrywillis.com/mainpage.html

 

[PhrogDriver]

i dont get a lot of range time, so I may have cut a corner. I loaded 67g of imr 4350 in a lapua case with 208g hornady ELD match. the book says 66.7 is max at 2800fps well my max speed was 9352 and min was 2814 std dev of 4.9 ok so there are the numbers, the result of my FAFO is that the shells are now .01 too large at the base and will not resize in my rgbs the question is: is there an accurate way to recover 50 cases or do I have to set these aside and label them as different. I know I can just size them as is and shoot them again, but I suspect that they will not track well with normal cases.

Also, for heavies in .300 Win Mag, try H1000.

 

[Jrb572]

Or Hogdon 4831sc

 

[sailnaked]

All, thank you for your replies, I only shoot paper, and my goal is 1000yds tight groups. i use the 208 because it has a very high BC. and in the 300WM is not suffering from velocity at 2800fps, heavy bullets are better in wind at 1000yd, but yall can change my mind on that.
i use the 4350 because that is what my stores had when I went shopping. no h1000 or several others available.
besides the collet thing is there another option? i cant get these sized because they will stick in my full length sizer die 75% down the case.

 

[supercorndogs]

Thats a completely diffrent problem than what the LW collet die will size. That is lube, die, press, or chamber problem.