6BRA Heavy bolt lift

[Lone Hunter]

Well I believe I found the issue causing my heavy bolt lift. It would appear that it was case lube causing the problem. I use Hornady one shot case lube and I’ve never had an issue before with any of my rifles, but I guess this one’s different! I tried some different loads, tried to bump the shoulder a few more thou, made sure my sizing die was correctly sizing in a number of spots on the case… but cleaning the loaded rounds off with some brake cleaner and a rag has made all the difference.
I appreciate everyone that chimed in and gave your input, I’ve actually learned a lot about what can cause an over pressure situation.
Thanks !

I did the same on a 6BR. Thought my powder charge was too hot but I didn’t get all the lube off the cases. Was using Imperial Sizing Wax. Cleaned the cases good and my heavy bolt lift went away. You have to pay attention to the little things also. Glad you got it figured out.

 

[urbanrifleman]

I will, I’m going to really clean my next bunch of brass and chamber before going out, I would think that’s where the problem is, because like I said, at 29.6 running under 2800 it was just as sticky. So I don’t really think it’s an over pressure issue.
I appreciate all the input.

The absolute best stuff to clean your brass after you have sized it to get the sizing lube off is this stuff. Sprayway glass cleaner. It is alcohol-based and has no ammonia and a quick wipe with a paper towel really takes off the lube and then it dries really fast.

Amazon.com

I just love that stuff in general It works good to clean anything including carpets. Not a joke.

 

[DHuffman]

The absolute best stuff to clean your brass after you have sized it to get the sizing lube off is this stuff. Sprayway glass cleaner. It is alcohol-based and has no ammonia and a quick wipe with a paper towel really takes off the lube and then it dries really fast.

Amazon.com

I just love that stuff in general It works good to clean anything including carpets. Not a joke.

I use it as well or 99% alcohol