Which 6mm?

[ColinBr]

I've had a hankering for a 6mm of some kind or another for a while, but there are a few different flavours out there.

I'd want to use it on Roe and fox, with a bit of target plinking in between.

I'm looking for calibre suggestions really as I'll probably get something either made, or pick up a semi/custom rifle secondhand.

I'm mindful of component supply at the moment so maybe something to also consideration.

 

[Andyquadra]

fast twist .243

 

[Malxwal]

fast twist .243

This.

 

[ColinBr]

fast twist .243

Yes I did think of this and in 243AI

 

[Home Loader]

fast twist .243

This.

What they said

 

[Andyquadra]

Yes I did think of this and in 243AI

to much faf making the brass

 

[Cumbrian 1]

If you are reloading then the 6XC is a great round.

 

[ColinBr]

If you are reloading then the 6XC is a great round.

Yes definitely will be reloading

 

[Border]

How about......a 6mm BR?

 

[samdk]

I've had a hankering for a 6mm of some kind or another for a while, but there are a few different flavours out there.

I'd want to use it on Roe and fox, with a bit of target plinking in between.

I'm looking for calibre suggestions really as I'll probably get something either made, or pick up a semi/custom rifle secondhand.

I'm mindful of component supply at the moment so maybe something to also consideration.

I have been shooting a 6mm Creedmoor for the last couple of seasons and have found it to be great!

Pros are:
• Good factory brass, no fire forming
• Straight wall case, far less stretch than 243 and easier to size
• SRP brass, seems hold up to pressure and last longer than LRP
• Factory rifles with fast twist readily available

Worth mentioning that factory ammo supply isn’t great, best to load for this one!

103gr ELD-X is my preferred bullet, 3200+ fps easily achieved with N160 and a 26” barrel.

 

[Jax]

I’ll throw 6mm creedmoor in to the mix having converted from .243 win

Quickload has me contemplating a 20” 6 creed in addition to my heavyweight 26” barrel 6 creed.

 

[308tikka]

All 6mm work well. They all go fast enough.

I have a 6BR, but also a barrel about to be chambered for 6xc.

6creeedmoor is good.

6mm Rem is a beast.

Fast twist 243 will also be good.

You just need minimum muzzle energy and Id suggest brass availability and capacity of powder will be more important going forwards.

 

[Malxwal]

Nae shortage of 243 brass. Best case capacity. I have to admit it's crossed my mind more than once.

 

[ColinBr]

How about......a 6mm BR?

Yes I would consider 1, but I've heard of issues trying to run these using a mag, though that might be strictly only when going semi custom route.

I wouldn't want a single shot rifle

 

[ColinBr]

All 6mm work well. They all go fast enough.

I have a 6BR, but also a barrel about to be chambered for 6xc.

6creeedmoor is good.

6mm Rem is a beast.

Fast twist 243 will also be good.

You just need minimum muzzle energy and Id suggest brass availability and capacity of powder will be more important going forwards.

Yes hence why I am very mindful of component supply at the moment.

I've heard 6mmCM is very heavy on barrels

 

[andychas]

All 6mm work well. They all go fast enough.

I have a 6BR, but also a barrel about to be chambered for 6xc.

6creeedmoor is good.

6mm Rem is a beast.

Fast twist 243 will also be good.

You just need minimum muzzle energy and Id suggest brass availability and capacity of powder will be more important going forwards.

That pretty much sums it up, Personally I went for a 6xc, love it. Really easy to find a good accurate load, but I’m sure the same could and should be said for the others.

 

[ColinBr]

Nae shortage of 243 brass. Best case capacity. I have to admit it's crossed my mind more than once.

Yes I have easy access to 243 brass

 

[HandB]

A bog standard .243 may be old news but in my experience it is the dog's danglies as it shoots 5MOA flatter than my .308s with much less recoil so I can see fall of shot. I have a 1980s Tikka T55 in .243 with the original 1 in 10 twist barrel (including a badly burned throat) yet it shoots 100gr bullets beautifully when they are seated 15 thou off the lands. Here's ten consecutive V bulls at 300yds from a recent range session:

 

[ColinBr]

That pretty much sums it up, Personally I went for a 6xc, love it. Really easy to find a good accurate load, but I’m sure the same could and should be said for the others.

What are the benefits of the 6xc compared to the 6CM?
Less powder, less barrel wear?

 

[308tikka]

Yes I would consider 1, but I've heard of issues trying to run these using a mag, though that might be strictly only when going semi custom route.

I wouldn't want a single shot rifle

6BR works ok when loading 3-4 in mag. Should probably mod the tray and put a rear block in but it still works. I also tend to use it for maximum precision work from seats, not to carry on a walk.

Cheap to run once cases bought/acquired. Factory is eye watering expensive but luckily I have a few hundred. Super accurate.