Rem 700 .243 to 6.5-284 Conversion

.300 Weatherby Mag · September 14, 2010, 03:26 PM

I have remington 700 CDL chambered in .243 win I want to convert to a 6.5-284 Norma.. I know the 6.5-284 has the same case head as a .308 win family. Do I simply swap barrels and go or is there more involved??

Jim Watson · September 14, 2010, 04:36 PM

The OAL on www.6mmbr.com is 3.228"
Will your short action handle that?

.300 Weatherby Mag · September 15, 2010, 01:34 PM

Jim,

Its a stardard R700 short action.. I have no idea what the max OAL for this action is..

Doyle · September 15, 2010, 02:20 PM

Somebody correct me if I'm wrong but I always thought the 284 was a long-action caliber.

.300 Weatherby Mag · September 15, 2010, 02:24 PM

From my limited knowledge of the parent cartridge, I know that it was originally designed to match the .270win/.280 rem performance in a short action.. It was made specifically for the model 88/100 winchester rifles..

Doyle · September 15, 2010, 03:08 PM

I just did some poking around on one of the benchrest forums and saw that you can use a short action for a .284 but doing so limits how long a bullet can use and how far you can set it out. Since most benchrest shooters like to use the really long 6.5mm pills to get the best BC and seat them pretty shallow at that, you probably would want to rethink going 6.5-284 in a short-action chamber.

edward5759 · September 15, 2010, 03:28 PM

I rechamberd a M700 from 243 to 6mm-284 simply by rinning a finish reamer into the chamber.
worked real well.
Shot the rifle for a long time and after 2000 + rounds
had to re-barrel the rifle, then I went with 6.5 - 284
I liked the 6mm a little better.
Ed

Scorch · September 15, 2010, 03:32 PM

Magazine box on a 700 short action is 3.00", people who use the short action 700 for 6.5-284 generally lengthen the magazine box. What's the point? Use a long action.

.300 Weatherby Mag · September 15, 2010, 05:45 PM

Sounds like I should throw another .243 barrel on it and build the 6.5 out of another longer action... Never been able to get this .243 to group, I like the caliber but hate Remington for letting a rifle leave the plant with such a low quality tube on it...

Doyle · September 15, 2010, 06:30 PM

If you want something more potent that the .243, put on a .260 or .260AI. It will give you that great 6.5mm BC but won't require anything other than a barrel change.

.300 Weatherby Mag · September 15, 2010, 06:46 PM

I've been looking at the 6.5 Creedmoor as an option as well..

September 14, 2010, 03:26 PM	#1
.300 Weatherby Mag Senior Member Join Date: September 6, 2008 Posts: 1,777	Rem 700 .243 to 6.5-284 Conversion I have remington 700 CDL chambered in .243 win I want to convert to a 6.5-284 Norma.. I know the 6.5-284 has the same case head as a .308 win family. Do I simply swap barrels and go or is there more involved??

September 15, 2010, 03:32 PM	#8
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 15,248	Magazine box on a 700 short action is 3.00", people who use the short action 700 for 6.5-284 generally lengthen the magazine box. What's the point? Use a long action. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Summit Arms Services

September 14, 2010, 04:36 PM	#2
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,546	The OAL on www.6mmbr.com is 3.228" Will your short action handle that?

September 15, 2010, 01:34 PM	#3
.300 Weatherby Mag Senior Member Join Date: September 6, 2008 Posts: 1,777	Jim, Its a stardard R700 short action.. I have no idea what the max OAL for this action is..

September 15, 2010, 02:20 PM	#4
Doyle Senior Member Join Date: June 20, 2007 Location: Rainbow City, Alabama Posts: 7,167	Somebody correct me if I'm wrong but I always thought the 284 was a long-action caliber.

September 15, 2010, 02:24 PM	#5
.300 Weatherby Mag Senior Member Join Date: September 6, 2008 Posts: 1,777	From my limited knowledge of the parent cartridge, I know that it was originally designed to match the .270win/.280 rem performance in a short action.. It was made specifically for the model 88/100 winchester rifles..

September 15, 2010, 03:08 PM	#6
Doyle Senior Member Join Date: June 20, 2007 Location: Rainbow City, Alabama Posts: 7,167	I just did some poking around on one of the benchrest forums and saw that you can use a short action for a .284 but doing so limits how long a bullet can use and how far you can set it out. Since most benchrest shooters like to use the really long 6.5mm pills to get the best BC and seat them pretty shallow at that, you probably would want to rethink going 6.5-284 in a short-action chamber.

September 15, 2010, 03:28 PM	#7
edward5759 Senior Member Join Date: September 15, 2009 Location: Phoenix, AZ. 30 miles from water, two feet from Hell. Posts: 355	I rechamberd a M700 from 243 to 6mm-284 simply by rinning a finish reamer into the chamber. worked real well. Shot the rifle for a long time and after 2000 + rounds had to re-barrel the rifle, then I went with 6.5 - 284 I liked the 6mm a little better. Ed

September 15, 2010, 05:45 PM	#9
.300 Weatherby Mag Senior Member Join Date: September 6, 2008 Posts: 1,777	Sounds like I should throw another .243 barrel on it and build the 6.5 out of another longer action... Never been able to get this .243 to group, I like the caliber but hate Remington for letting a rifle leave the plant with such a low quality tube on it...

September 15, 2010, 06:30 PM	#10
Doyle Senior Member Join Date: June 20, 2007 Location: Rainbow City, Alabama Posts: 7,167	If you want something more potent that the .243, put on a .260 or .260AI. It will give you that great 6.5mm BC but won't require anything other than a barrel change.

September 15, 2010, 06:46 PM	#11
.300 Weatherby Mag Senior Member Join Date: September 6, 2008 Posts: 1,777	I've been looking at the 6.5 Creedmoor as an option as well..