Barrel Chambering Question -II
dfletcher,
Might there be another number up there with the 6x47 on that barrel? Like a 3 digit decimal? If so, that barrel might be a tight necked bench barrel, intended for the brass to be neck turned. If so, that could be interfering with your chambering the fresh brass.
In any case, it is a lot safer, to cast, and go from there. It will be easier too, with the barrel off the rifle, and if you need to, you can rechamber it after the cast.
You can find out what the twist rate is, and even go as far to custom throat it for certain bullet lengths. I done that once with a Remington 700 Sendero in 300 RUM, as the throat was way longer than the magazine would allow seating. If you do this, make sure you stamp the barrel accordingly, as to what you did.
Best
EDIT 1
Glad you found the problem. You should do a chamber cast, still though, to get your neck dimension...and enjoy the little project.
Best
Might there be another number up there with the 6x47 on that barrel? Like a 3 digit decimal? If so, that barrel might be a tight necked bench barrel, intended for the brass to be neck turned. If so, that could be interfering with your chambering the fresh brass.
In any case, it is a lot safer, to cast, and go from there. It will be easier too, with the barrel off the rifle, and if you need to, you can rechamber it after the cast.
You can find out what the twist rate is, and even go as far to custom throat it for certain bullet lengths. I done that once with a Remington 700 Sendero in 300 RUM, as the throat was way longer than the magazine would allow seating. If you do this, make sure you stamp the barrel accordingly, as to what you did.
Best
EDIT 1
Glad you found the problem. You should do a chamber cast, still though, to get your neck dimension...and enjoy the little project.
Best
0
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^^
I thought of that, having just dealt with a 22 PPC, and there is no neck chamber diameter. A plain old 6X47 drops in just perfectly, the shoulder of the case meets with the chamber shoulder just as it should - just too much "butt end" sticking out of the chamber. Given when this was made (25 Jan 78 - the date is stamped on the barrel) I suspect this came of a cutting edge, at the time, bench gun with a sleeved receiver and God only knows what else for a set up. You mentioned a recessed bolt head, I suppose that ould be it. Worst case scenario, my gunsmith rechambers deeper so a regular bolt head works or I'll turn it into a 6X45. Be nice to use the lesser PITA brass to find, for once in my life.0 -
Sounds like you have a 6x45 chamber.
A 223 case should drop in to the right depth.
6x45 takes only one pass with a 6mm expander button on 223/5.56 brass to form the case. No hard to find 222mag brass.0 -
quote:Originally posted by tsr1965
dfletcher,
Might there be another number up there with teh6x47 on that barrel? Like a 3 digit decimal? If so, that barrel might be a tight necked bench barrel, intended for the brass to be neck turned. If so, that could be interfering with your chambering the fresh brass.
In any case, it is a lot safer, to cast, and go from there. It will be easier too, with the barrel off the rifle, and if you need to, you can rechamber it after the cast.
You can find out what the twist rate is, and even go as far to custom throat it for certain bullet lengths. I done that once with a Remington 700 Sendero in 300 RUM, as the throat was way longer than the magazine would allow seating. If you do this, make sure you stamp the barrel accordingly, as to what you did.
Best
Mystery solved ....
I should have figured, just because the neck diameter wasn't stamped on the barrel didn't mean the tight neck didn't exist. That's the case here. What felt like the shoulder hitting was actually the too large case neck butting against the too small chamber neck.
Glad I bought the case neck turner for the 22 PPC I got a short while ago, I guess I'll have to use it here too.0 -
quote:Originally posted by tsr1965
dfletcher,
Might there be another number up there with the 6x47 on that barrel? Like a 3 digit decimal? If so, that barrel might be a tight necked bench barrel, intended for the brass to be neck turned. If so, that could be interfering with your chambering the fresh brass.
In any case, it is a lot safer, to cast, and go from there. It will be easier too, with the barrel off the rifle, and if you need to, you can rechamber it after the cast.
You can find out what the twist rate is, and even go as far to custom throat it for certain bullet lengths. I done that once with a Remington 700 Sendero in 300 RUM, as the throat was way longer than the magazine would allow seating. If you do this, make sure you stamp the barrel accordingly, as to what you did.
Best
EDIT 1
Glad you found the problem. You should do a chamber cast, still though, to get your neck dimension...and enjoy the little project.
Best
Just got back from visiting the gunsmith, I'm taking a different approach. Lop off the threads, recut, square everything up and rechamber to 6 X 45. Going simple on this one. [:D]0
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