Guys,
I was wondering if anyone had any experience with changing the size of chamfer on a chamber to improve feeding of cartridges with minimal body taper i.e. Creedmoor, BR etc.?
I was looking at my AIAX 308 barrel and noticed that it has a substantial chamfer at the back of the chamber. When compared to my 6mm Creedmoor AIAX barrel you can see that it is larger. When compared to a typical Remington setup the chamfer on the AI's are both substantially larger.
I noticed that if I chamber a round with the AIAX 6mm barrel and move the bolt very slow the round will pop up as it leaves the lips of the magazine and then bind slightly afterwards as the bolt pushes the cartridge into the chamber, you then either have to take the forward pressure off the bolt the allow the case to align with the chamber or force it in. With the 308 AIAX barrel this happens but it is almost imperceptible. I think this is because of the larger chamfer on the 308 barrel, and the additional taper of the 308 case. Both cartridges feed fine when running the bolt quickly but the 308 is smoother.
Ultimately the reason I ask is because I have been trouble shooting a feeding problem with a R700 clone action and I think this may be one of the reasons it doesn't feed quite as nicely as my AI does. If you look at the typical chamfer on a R700 chamber it is non existent compare to the AI barrels.
Just looking for thoughts and experiences.
AIAX 308 Chamber
AIAX 6mm Creedmoor chamber
Remington 700
I was wondering if anyone had any experience with changing the size of chamfer on a chamber to improve feeding of cartridges with minimal body taper i.e. Creedmoor, BR etc.?
I was looking at my AIAX 308 barrel and noticed that it has a substantial chamfer at the back of the chamber. When compared to my 6mm Creedmoor AIAX barrel you can see that it is larger. When compared to a typical Remington setup the chamfer on the AI's are both substantially larger.
I noticed that if I chamber a round with the AIAX 6mm barrel and move the bolt very slow the round will pop up as it leaves the lips of the magazine and then bind slightly afterwards as the bolt pushes the cartridge into the chamber, you then either have to take the forward pressure off the bolt the allow the case to align with the chamber or force it in. With the 308 AIAX barrel this happens but it is almost imperceptible. I think this is because of the larger chamfer on the 308 barrel, and the additional taper of the 308 case. Both cartridges feed fine when running the bolt quickly but the 308 is smoother.
Ultimately the reason I ask is because I have been trouble shooting a feeding problem with a R700 clone action and I think this may be one of the reasons it doesn't feed quite as nicely as my AI does. If you look at the typical chamfer on a R700 chamber it is non existent compare to the AI barrels.
Just looking for thoughts and experiences.
AIAX 308 Chamber
AIAX 6mm Creedmoor chamber
Remington 700