Should the necks be turned on the casings? I always thought the bullets could be inserted into the fired casing. Not a custom chamber.
When I annealed my Dasher brass too hard, they didn't spring back at all and extraction got harder. MattI had this happen before on 204 brass. I annealed the cases
and after that you could not push bullets into the fired cases
till there 4 firing. My thought was I over annealed them.
How many shots fired without really cleaning chamber area? Could be carbon buildup. MattTwice fired Winchester. Less than trim length. Factory rifle. No crimp.
This is what I recently ran into.How many shots fired without really cleaning chamber area? Could be carbon buildup. Matt
If you have .2945 loaded round in a .297 chamber, then you only have .0025 total clearance.I am curious what the verdict will be on this. I was talking to the smith yesterday about it. I have a 6.5wsm that has a .297 neck and I use 270wsm brass and neck down to .293 with a bushing. So loaded round is .2945. I can push a bullet into a fired case but it’s tough. I have to use a brush in there and then get on it. Same thing with my 28 Nosler. Curious how tight neck chambers shake out with accuracy and a .0045 chamber comparison.
That is about what I consider bare minimum. I lke at least .003, then you can have uneven necks which can change it. You also can have carbon in the neck area. I like to error on the side of safe. MattWould that be to tight of a neck? I could turn the brass but I am not set up for that...
With brass spring back after firing and your minimal clearance, it's probably what you are experiencing. I turn for a .004 total clearance in my 284. If you start to get a carbon build up in your chamber neck, it will get even tighter.There might be some carbon in the necks. I haven’t been cleaning the necks off after they are fired. Accuracy fell off. About 75 rounds since I cleaned it. Thanks for the help.
BingoMid-range, lower pressure reloads may not expand necks. Example- 243 win, IMR 4350 powder, 68 gr Berger flat base bullets, factory chamber.