Does anybody have a good picture of a flat primer?
Yes, go to this website and towards the bottom of the page: http://38super.net/Pages/Factory2.html there are several examples.
Does anybody have a good picture of a flat primer?
Where did you say you are getting your load data? IMO you have those powders reversed, you should be using the slower powder in the 300 Win Mag. Don't get me wrong, nothing wrong with using IMR4350 in the 7mm-08 but why IMR4064 in the 300 Win Mag? If anything I would be using IMR4350 in both or better yet, 4831 in the 300 Win Mag.First off thanks to all for your help.
I shot today and feel I did well for my first attempt.
With the .300WinMag, I started with 52gr of IMR4064 pushing a hornady interlock 165BTSP and increased by .5 per 5 shot group. I didn't see a massive change in accuracy but the best groups were from 53-54.5. I stopped as things stated to open back up at 55.5. No signs of pressure. Best groups if you take out a pulled shot here and there were at or less than MOA, .708" being the best one.
Now the 7mm-08 was a bit different. Starting with 44gr of IMR4350 with half grain steps groups were not so good, +2" on average with the worst around 4". I did get one at 1.46" at 46gr. Good enough to shoot a deer here but I think it should do better. I did see some primer flattening I think on the hotter loads.
It was about 25 degrees when I started and got to about 35. Shooting off a crappy big game folding bench rest that wobbles all over.