tyeager2964
WKR
- Joined
- Feb 11, 2016
- Messages
- 368
So I am starting to reload. I'm working with an older .243 savage to get my feet wet. I measured the COAL by placing a bullet into once fired brass from my rifle. Did the sharpie trick 10 times and averaged out the overall length to be 2.761. Bullet was definitely contacting the lands as bolt was stiffer to close. I know this method has its downfalls as well because the bullet could possible be pushed thousands of an inch into the lands when closing the bolt, measurements are not exact (hence the need or recommendation for an average), etc. I don't have an overall length gauge and I wanted to play around to see what results I would get.
At 2.761 overall length if I back off 0.015 as a start for bullet seating depth to use in a ladder test then I get 2.746. Max overall length according to SAAMI is 2.710. I know SAAMI is made for ammo to work in all rifles. Is it typical to see a 0.035 difference if your chamber vs max SAAMI spec?
Should I start ladder test at max SAAMI spec or should I consider my rifle's measurements a better starting point?
I did make a dummy round at 2.746 and it chambered with no difficulty at all.
At 2.761 overall length if I back off 0.015 as a start for bullet seating depth to use in a ladder test then I get 2.746. Max overall length according to SAAMI is 2.710. I know SAAMI is made for ammo to work in all rifles. Is it typical to see a 0.035 difference if your chamber vs max SAAMI spec?
Should I start ladder test at max SAAMI spec or should I consider my rifle's measurements a better starting point?
I did make a dummy round at 2.746 and it chambered with no difficulty at all.