My loaded rounds measure .310. How tight can the chamber neck be to just get by without turning brass necks??
Gunsmithing Semi tight neck chamber?
- Thread starter Ted_D
- Start date
Re: Semi tight neck chamber?
I think it will be a 280AI. Trying to get ready to place the order for the barrel
I think it will be a 280AI. Trying to get ready to place the order for the barrel
Re: Semi tight neck chamber?
As long as the necks dont expand more than .005" at firing your OK. I run a .315" neck on my 7mm reamers, 7/300wsm, 7wsm, 280AI, 7-08, 7mmRM etc. If the necks do expand more than .005" at firing when you size the brass down, run out in your sized necks will be present.
If your running a loaded neck thats .310", a chamber/reamer neck of .315" would be fine. I'd use a .308" bushing to start.
As long as the necks dont expand more than .005" at firing your OK. I run a .315" neck on my 7mm reamers, 7/300wsm, 7wsm, 280AI, 7-08, 7mmRM etc. If the necks do expand more than .005" at firing when you size the brass down, run out in your sized necks will be present.
If your running a loaded neck thats .310", a chamber/reamer neck of .315" would be fine. I'd use a .308" bushing to start.
Re: Semi tight neck chamber?
I was just informed that .316 is as tight as they go. Will this be ok?
I was just informed that .316 is as tight as they go. Will this be ok?
Re: Semi tight neck chamber?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: FCS</div><div class="ubbcode-body">I wouldn't go under 0.313" unless you want to turn necks. 0.0015"/side minimum, 0.002"/side clearance won't hurt you any.
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+1 .003 per side with .006 total would assure flawless feeding with fine accuracy. I have a match Palma ream with a .343 neck and .337 loaded cartridge diameter. That is about the maximum I'd go though.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: FCS</div><div class="ubbcode-body">I wouldn't go under 0.313" unless you want to turn necks. 0.0015"/side minimum, 0.002"/side clearance won't hurt you any.
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+1 .003 per side with .006 total would assure flawless feeding with fine accuracy. I have a match Palma ream with a .343 neck and .337 loaded cartridge diameter. That is about the maximum I'd go though.
Re: Semi tight neck chamber?
This barrel is for a single shot. MGM told me >316 and they usually do a .318. Price starts at $395 and Im not going to buy a reamer. I will just give up on the idea and find another toy
This barrel is for a single shot. MGM told me >316 and they usually do a .318. Price starts at $395 and Im not going to buy a reamer. I will just give up on the idea and find another toy
Re: Semi tight neck chamber?
Actually after flute and a few other things total is $570. They have a blank for neck size on order form. Why I dont know
Actually after flute and a few other things total is $570. They have a blank for neck size on order form. Why I dont know
