Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

Semi Custom Kimber Montana 280AI

 
LinkBack Thread Tools Display Modes
  #1  
Old 03-25-2014, 05:19 PM
Silver Member
 
Join Date: Nov 2012
Location: Alberta Canada
Posts: 118
Semi Custom Kimber Montana 280AI

Guys just got done tweaking out my KM 280AI it has never been fired, and I wanted to know everyones thoughts on breaking my barrel in with regular 280REM rounds as they are cheaper , and I can fire form brass at the same time , should I expect or will there be any issues by breaking my barrel in this way , I mean I am only shooting 1 then cleaning.
Reply With Quote
  #2  
Old 03-25-2014, 06:04 PM
SPONSOR
 
Join Date: Mar 2010
Location: on the Southern Plains
Posts: 1,149
Re: Semi Custom Kimber Montana 280AI

Go down to the "GUNSMITHING" section and read the thread titled ".280A.I. Concerns".
__________________
"Shoots real good!": definition; it didn't blow-up in my face. Not everything can be fixed on an internet forum!
Reply With Quote
  #3  
Old 03-25-2014, 06:54 PM
Platinum Member
 
Join Date: Oct 2008
Location: Alabama
Posts: 5,877
Re: Semi Custom Kimber Montana 280AI

I've broken in 3 Ackleys while forming brass...Just be sure to shoot about 5, then let it cool down. Repeat for about 50 rounds. I usually make it an afternoon and take a few rifles and rotate them out so I keep something on the bench for shooting.
__________________
"I'm just a peckerwood who lives in the hills with too many guns..." - Bob Lee Swagger

"Give me a minute...I'm good. Give me an hour...I'm great. Give me 6 months...And I'm unbeatable." - Col. Hannibal Smith

Ignore everything I say, because I have a reading comprehension and memory problem...

Quote:
Originally Posted by WildRose View Post
The 284 is to the STW what a tricycle is to a Ninja.
Reply With Quote
  #4  
Old 03-26-2014, 09:16 AM
SPONSOR
 
Join Date: Mar 2010
Location: on the Southern Plains
Posts: 1,149
Re: Semi Custom Kimber Montana 280AI

Quote:
Originally Posted by MudRunner2005 View Post
I've broken in 3 Ackleys while forming brass...Just be sure to shoot about 5, then let it cool down. Repeat for about 50 rounds. I usually make it an afternoon and take a few rifles and rotate them out so I keep something on the bench for shooting.
Are those factory barrels or custom?
__________________
"Shoots real good!": definition; it didn't blow-up in my face. Not everything can be fixed on an internet forum!
Reply With Quote
  #5  
Old 03-26-2014, 09:47 AM
Platinum Member
 
Join Date: Oct 2008
Location: Alabama
Posts: 5,877
Re: Semi Custom Kimber Montana 280AI

Quote:
Originally Posted by shortgrass View Post
Are those factory barrels or custom?
New factory barrels that have been rechambered to Ackley calibers.
__________________
"I'm just a peckerwood who lives in the hills with too many guns..." - Bob Lee Swagger

"Give me a minute...I'm good. Give me an hour...I'm great. Give me 6 months...And I'm unbeatable." - Col. Hannibal Smith

Ignore everything I say, because I have a reading comprehension and memory problem...

Quote:
Originally Posted by WildRose View Post
The 284 is to the STW what a tricycle is to a Ninja.
Reply With Quote
  #6  
Old 03-26-2014, 12:40 PM
Silver Member
 
Join Date: Nov 2012
Location: Alberta Canada
Posts: 118
Re: Semi Custom Kimber Montana 280AI

Hey guys I am a little confused now after all the reading , as some say one thing ,and others say another, and now on top of it I have bought a Cooper 280 AI as well. So If I get the jist of things I will have to buy 2 sets of dies , and I cannot fire form 280 REM in the Kimber but I can fire form in the Cooper . The Nosler brass cannot be used in the Cooper but I can use in the Kimber, and Nosler loaded ammo can be used in both rifles. Boy Nosler created a mess in my opinion. Now I just need to find out who makes what dies ,and where to get them , I have a set of Hornady custom grade dies but I just have to find out what chamber they are for . Way to much work!!!!
Reply With Quote
  #7  
Old 03-26-2014, 01:57 PM
Platinum Member
 
Join Date: Oct 2008
Location: Alabama
Posts: 5,877
Re: Semi Custom Kimber Montana 280AI

Quote:
Originally Posted by ramrod79 View Post
Hey guys I am a little confused now after all the reading , as some say one thing ,and others say another, and now on top of it I have bought a Cooper 280 AI as well. So If I get the jist of things I will have to buy 2 sets of dies , and I cannot fire form 280 REM in the Kimber but I can fire form in the Cooper . The Nosler brass cannot be used in the Cooper but I can use in the Kimber, and Nosler loaded ammo can be used in both rifles. Boy Nosler created a mess in my opinion. Now I just need to find out who makes what dies ,and where to get them , I have a set of Hornady custom grade dies but I just have to find out what chamber they are for . Way to much work!!!!
Actually, Remington created the mess...Remington's custom shop started chambering rifles with a .014" shorter shoulder height based on a screw-up when they ordrered the reamer (that's what I was told), and that's where all the issues came from. And then somehow Nosler got involved in the screw-up, then they used that chambering for their SAAMI spec design, then blah blah blah, all this bullcrap later....And we're at where we're at now.

Personally, if you're unsure which chamber you have for both, go buy a bag of 20 .280 Remington brass. Load 10 for each gun. Shoot the 20 brass, and keep them seperate from each other. Then measure headspacing of the fired brass, and you will have your answer.

Or you can take both of your rifles to a competent gunsmith and have him check the chamber headspacing. If they come out the same, then you're good to go to buy Nosler .280 AI brass, and just FL size them each time, so it won't matter.

But I also feel your pain of having multiple rifles in the same caliber. Which is why I keep seperate brass seperate for different rifles. And I write on the reloading label which rifle the brass was shot out of, so I know which is which. Plus, that lets me know which rilfe likes what load, so I makes me a (sort-of) load log book.

Sounds like a pain in the ass, but it's not so bad once you get the hang of it.

Plus, each rifle will like different loads, so I'd keep those brass seperate anyway, after fire-forming.
__________________
"I'm just a peckerwood who lives in the hills with too many guns..." - Bob Lee Swagger

"Give me a minute...I'm good. Give me an hour...I'm great. Give me 6 months...And I'm unbeatable." - Col. Hannibal Smith

Ignore everything I say, because I have a reading comprehension and memory problem...

Quote:
Originally Posted by WildRose View Post
The 284 is to the STW what a tricycle is to a Ninja.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes



All times are GMT -5. The time now is 05:07 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC