It has to be oversized lead, right?
- Thread starter bangbig
- Start date
- Status
LiveLife
Member
OP did post the problem was with both the case gauge and the barrel918v said:
bangbig said:
LiveLife
Member
In my post, I quoted that OP backed off the taper crimp, not the OAL.
Besides. OP already did a marker test rcmodel usually recommends and found that it was the case rubbing and not the bullet hitting the rifling that prevented the round from fully chambering. I really think we need to hear back from the OP before we continue with this issue.
Besides. OP already did a marker test rcmodel usually recommends and found that it was the case rubbing and not the bullet hitting the rifling that prevented the round from fully chambering. I really think we need to hear back from the OP before we continue with this issue.
bangbig said:
I read post #35 to mean his round is rubbing the case gauge, not his actual chamber walls.
He won't disclose the fired case diameter which would prove the diameter of his round (and the bullet diameter) is not the problem.
He wants a lead bullet handload to pass a case gauge, and not to work as it should in hid gun. You are all assuming the actual chamber in his Kahr is undersized by something like .005" which is impossible. As much as I dislike Kahrs, even they have standards.
He won't disclose the fired case diameter which would prove the diameter of his round (and the bullet diameter) is not the problem.
He wants a lead bullet handload to pass a case gauge, and not to work as it should in hid gun. You are all assuming the actual chamber in his Kahr is undersized by something like .005" which is impossible. As much as I dislike Kahrs, even they have standards.
Lost Sheep
Member
Post #2 suggested measuring a fired, unsized round.
.005" undersized chamber is possible, especially if there is fouling involved, but as you surmise, unlikely. Factory ammo does seem to feed properly, I believe. However, I have not ruled out the possibility of an undersized chamber.
I think he does not care if the bullet passes a case gauge. What would be the point in that? If it passes the barrel test (the real one, while shooting) I think the original question would have been quite different, like, "What is wrong with my case gauge?"
I have been assuming all along that the chamber is properly dimensioned, but that the case is getting bulged somehow. The question is how? The answer would be hinted at by knowing where on the case the binding is occurring. But we don't know that, yet. The OP is the only one who can help very much there, but speculation does have some value. Conclusions based on speculation do not.
Lost Sheep
Not so, still needs forced regardless of oal.
Lost Sheep
Member
No, not likely. A resized case would HAVE to be no larger in diameter than an unresized case. The unsized, fired case should rechamber without difficulty. So, a resized case should be that much easier to chamber. Until it gets bulged (either by insertion of an oversized bullet, insertion of a properly sized bullet where the case walls are over-thick or some other, as yet unexplained cause).
I just wanted to see where the bullet being seated bulges the case (how far from the case mouth and by how much) larger in diameter than the fired, unsized case.
I think it might be informative.
Lost Sheep
Iron Sight
Member
Lee lead bullet size kit.
While back I bought a bunch of 45 that were not correctly sized. Using one of lees kis solved the problem.
http://www.midwayusa.com/product/343992/lee-bullet-lube-and-size-kit-356-diameter
While back I bought a bunch of 45 that were not correctly sized. Using one of lees kis solved the problem.
http://www.midwayusa.com/product/343992/lee-bullet-lube-and-size-kit-356-diameter
Got some .356" from MBC today. Loaded 3 rounds without changing anything in my set up. Plunk right in the barrel and slide EASILY into the case gauge.
Fired the 3 rounds off hand at 10 yards with a light (maybe not so light as these are were still seated at 1.110) load of 231 and got a very nice group.
The case from that round AFTER being fired measured .384, .388. and .390 from mouth to bottom. Where does that fall in the "chamber size" range???
Fired the 3 rounds off hand at 10 yards with a light (maybe not so light as these are were still seated at 1.110) load of 231 and got a very nice group.
The case from that round AFTER being fired measured .384, .388. and .390 from mouth to bottom. Where does that fall in the "chamber size" range???
LiveLife
Member
Great! Looks like it was the case of oversized bullets. Now, I would focus on identifying the powder charges that produce accurate shot groups while minimizing leading in your barrel.bangbig said:
I love happy endings.
Last edited:
If your fired cases measure .384" at the case mouth, then there is no way in hell a .001" difference in bullet diameter would have caused an interference issue in the chamber. Your loaded round measured what, .378" ? That's z clearance of .006". Going to a .356" bullet gave you an additional .001" for a total of .007"?
Going to a smaller bullet allows you to increase OAL. That's basic geometry. But now you'll have to deal with leading.
LiveLife
Member
For me, I found fired case mouth dimensions to be variable depending on the condition of the brass and how much spring-back there is.
- Status
