.243 vs. 6mm CM

[handwerk]

I am going to rebarrel my pre 64 M70 .243 with a new lilja lwt 6mm 1:8 twist. I already load for my daughter's .243 and will use this newly barreled rifle for some hunting and practice to maybe 500 -600 yards or so.
Any good reason's to stray from the 243 and go with the 6MM CM? I am hoping to shoot the banes LRX 95's.

 

[ButterBean]

I would stay with the 243 myself, not enough difference to switch IMO , Just my two pennies worth

 

[AZShooter]

If you were not a handloader the 6 CM might be a better choice as their ammo's accuracy in every 6.5 or 6 CM I have seen at the range shoots excellent groups. Hornady has figured out how to make some great ammo for those two cartridges.

BUT seeing you are a handloader make it a 243.

 

[hunter67wa]

Brass may be the only reason

 

[wbm]

If you already have a fast twist 243 I would stay with it, but if you dont' I would go with 6 CM.

 

[ShtrRdy]

If you reload and already have .243 tools I would stay with the .243.

 

[cinch]

They're too close to tell the difference stick with the 243...

 

[matt_3479]

If your all ready set up with the 243 and the barrel is a fast twist why change. You have brass, dies and a rifle. If your starting from scratch I'd take the creed! Love mine

 

[wbm]

I'd take the creed! Love mine

Whatchagot Matt?

 

[blueprairiedog]

I am going to rebarrel my pre 64 M70 .243 with a new lilja lwt 6mm 1:8 twist. I already load for my daughter's .243 and will use this newly barreled rifle for some hunting and practice to maybe 500 -600 yards or so.
Any good reason's to stray from the 243 and go with the 6MM CM? I am hoping to shoot the banes LRX 95's.

I have both and reload but the 6mmcm makes me smile every time I shoot one ragged hole.39.6 grains h4350 105 Berger hybrids 2920

 

[BrentM]

I used a 243 for PRS and several of my buddies used a creedmoor. I was running a little faster but also running 5 grains more powder. Since you have the dies etc it's probably a best to stick with the 243 but if you don't care about that, I'd do the creedmoor. It is more efficient, dang near same performance with less powder, and the case designs seem easier to tune loads.

 

[codym]

Stay with the .243. Lapua brass same bullets and very similar case capacity. No advantage in my opinion to go with the creed, just more money to spend to get setup reloading a different caliber. The only advantage at all the creed has over the .243 is better factory ammo options and slightly less coal. I run a .243 win match chamber and have no issue touching the lands with a 115 dtac or a 110 SMK in an alpha mag so not much difference there either.

 

[Shooter 69]

Stay with the 243 , it's been around for a long time. Tried and true. Not enough difference to spend the money for another caliber to worry about.

 

[foul bore]

I went thru this last year. decided on 6mm cm I'm happy with my choice. I really don't think you can go wrong either way. I reload everthing, so that was not a factor