Ruger M77 MK2, .243 to a .223

[wnelson14]

Hello I have an older .243 Ruger m77 mark 2. Never gets shot was my first deer rifle. Been toying with the idea to put a new barrel and want a new caliber.
Can this be done to make it into a .223 with the stock bolt and bottom metal?

 

[Jimbee]

Hello I have an older .243 Ruger m77 mark 2. Never gets shot was my first deer rifle. Been toying with the idea to put a new barrel and want a new caliber.
Can this be done to make it into a .223 with the stock bolt and bottom metal?

Wrong bolt

 

[6mm Remington]

Wrong bolt

You could make a 22-250 out of it with the bolt that's in it now. That would be simple enough.

 

[BRTreedogs]

I believe 22 creedmoor is what you want

 

[wnelson14]

Which ammo is more readily available, 22cm or 22-250. Haven’t paid attention to either and I don’t reload.

 

[BRTreedogs]

Which ammo is more readily available, 22cm or 22-250. Haven’t paid attention to either and I don’t reload.

Look on ammo seek.

 

[wyo]

While it can certainly be done, if the rifle still shoots well this may be a great excuse for you to get a new rifle. Those older M77s, especially if it is the zytel/boat paddle stock, are quite sought after now. If I were in your shoes I'd leave it as-is and snag a Tikka.

 

[Wrench]

Which bolt is it? There's some that have the full circumference around the head and some are true crf with the bottom of the bolt flush with the bolt face. If it's the full circumference, you could bush the bolt. That only solves the chambering portion though. The feed rails will be too wide and need some custom work to function and the follower and mag will be wrong.

It's nothing you couldn't solve for 1200-1500 bucks.

 

[BRTreedogs]

My m77 is a 223 and I wish it was a 243.
But my dad bought it so I doubt its going anywhere.

 

[BCsteve]

Or shoot light weight bullets out of your .243.

 

[wnelson14]

Which bolt is it? There's some that have the full circumference around the head and some are true crf with the bottom of the bolt flush with the bolt face. If it's the full circumference, you could bush the bolt. That only solves the chambering portion though. The feed rails will be too wide and need some custom work to function and the follower and mag will be wrong.

It's nothing you couldn't solve for 1200-1500 bucks.

Here it is

 

[BCsteve]

That's the CRF bolt face.