I took my 7mm Remington Magnum cases to a friend's to anneal. We are both new to annealing and did not realize at the time that it was possible to over anneal cases. We did know to only anneal the necks, so I was careful with what part of the case the torch hit. This was on a Mike's annealer, and I had them set to run at a very slow setting. I do not recall the color of the flame after hitting the brass and there was only very light discoloration on the brass (not nearly as prevalent as Lapua brass).
I didn't think it was a big deal until I went to shoot them yesterday. I am mindful of where the fouling on the case goes to due to desire to headspace off shoulder instead of the belt. Prior to Annealing, all powder fouling was limited to the necks of the case. The annealed rounds however had fouling past the necks into the shoulder.
Did I somehow over anneal? This also seems indicative of brass being too hard, which also doesn't make sense to me. I'm concerned because this is 7mm Nosler brass which is out of stock everywhere and I have a match on Saturday.
I didn't think it was a big deal until I went to shoot them yesterday. I am mindful of where the fouling on the case goes to due to desire to headspace off shoulder instead of the belt. Prior to Annealing, all powder fouling was limited to the necks of the case. The annealed rounds however had fouling past the necks into the shoulder.
Did I somehow over anneal? This also seems indicative of brass being too hard, which also doesn't make sense to me. I'm concerned because this is 7mm Nosler brass which is out of stock everywhere and I have a match on Saturday.
