Rounds won't feed

O

oneflyer

Guest
Some help understanding and jargon definitions please.
I just had a Hart 1A rebarreled (single shot)and the rounds don't feed without some help. I'd like to drop the round onto the tray and push the bolt forward and chamber the round. This doesn't always happen and I have to sometimes push the round in manually. I was told it is because the bolt is not "coned". Don't know that term. I asked the gunsmith about it and he said he could "sand" or chamfer the chamber slightly to help the problem. Is this the best we can do? He said it will help but not totally resolve the problem. Is there an easy fix? Is there a fix?
 
oneflyer said:
I was told it is because the bolt is not "coned". Don't know that term.
Click to expand...

It's not the bolt that is coned, it's the mouth of the chamber. Some rifles like Pre-64 Winchester Model 70s had a coned breech--a funnel shape to the chamber mouth that guided the bullet tip toward the chamber so it smoothly entered the chamber as the bolt was closed. Other rifles lacked this and had a squared breech that sometimes caught the bullet tip and prevented the round from chambering. That sounds like your problem.

"Sanding" the chamber mouth likely won't help much because of the small amount of metal removed. Removing too much metal creates safety issues with an unsupported case head.

You may be able to modify the "tray" so that the round is better aligned with the chamber when the bolt is closed.
 
feed problem

Hi oneflyer , important to know what case this is so you know how much tapper to machine into the chamber to correct the problem. if it can be corrected in this manner . The head on particular cases is shorter than others you can not machine pass the head length of the case or you will have case separation. Perpendicular tapper or machining across the face of the barrel will not always correct this problem . You must do an internal tapper or down the chamber bore so the tip will clear the chamber wall . mike
 
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Won't feed

Mike- This is a 280 Ackley. When the tray is "modified" are you saying that the loading ramp should have some kind of additional more elevated ramp affixed to it?
I would have thought that this is a problem that I have that is not unique to my rifle and there would be a fairly common "fix" for it.
 
oneflyer said:
Mike- This is a 280 Ackley. When the tray is "modified" are you saying that the loading ramp should have some kind of additional more elevated ramp affixed to it?
I would have thought that this is a problem that I have that is not unique to my rifle and there would be a fairly common "fix" for it.
Click to expand...

I think the ramp needs to let the back of the case lower more ... which will pivot the case and make the bullet sit higher ...
 
oneflyer

Before you start making changes to the feed ramp, make sure that it's not simply the case mouth catching on a sharp edge of the chamber. That will happen quite often unless the gunsmith cuts a very slight bevel at the beginning of the chamber. Not a taper, a bevel.

Ray
 
Ray

I think that's what the plan is right now. Need to have this feed issue fixed-speed is often the key to a relay win.
 
won't feed

Oneflier the reason you have a feed problem is the fact that you are dealing with a 40 degree shoulder on your cartridge . As you said speed loading is the key to shooting a good condition . when you run the bolt forward your shoulder slams into edge of the chamber . When i bulid ackleys I always machine led angle into the chamber to over come this problem . Your gunsmith should be able to correct this problem . If I am not explaining this clearly give me a call Frank . just for futher info i am shooting a 6.5 X250 ack. and it feeds just fine . mike
 
Won't feed

Mike- I've seen you hammer them at the 600 yard matches. Kicked my butt enough times I should know. Thanks for the info> I feel more knowledgeable now to discuss this with the smith- you know how smiths are :):):)


Frank
 
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