Hornady freebore question

[lee w 118]

Hi there, what freebore would i need on  .224 75g and 80g bullet.

The bullets are Hornady 75g and 80g ELD match. 1-8 twist

Why im asking is that i have to spec this when ordering new reamer

And could i , if i want shoot hornady 53g v max in the same chamber

Below are bullet lengths , cheers Lee 

[lee w 118]

I have tried to contact hornady but no reply as of yet , cheers Lee

[Andrew]

Do you think that the 53 grain won't shoot if throated for the heavier bullet? They should shoot just fine if that barrel is capable of doing so. I have so many accurate .223 loads ranging from 50 grain Fiocci factory VM loads to my own 70 grain loads that I don't give the standard throat/chamber of my factory rifles a thought.~Andrew

[lee w 118]

Thanks Andrew

[Catch-22]

On 11/30/2019 at 12:24 PM, lee w 118 said:

Hi there, what freebore would i need on  .224 75g and 80g bullet.

The bullets are Hornady 75g and 80g ELD match. 1-8 twist

Why im asking is that i have to spec this when ordering new reamer

And could i , if i want shoot hornady 53g v max in the same chamber

Below are bullet lengths , cheers Lee 

I’m having a .223ai barrel spun up for my impending Impact Precision/MPA comp chassis rifle.

The reamer is throated for 77gn-80gn bullets and has a 0.60” freebore (very similar to a .223 Wylde freebore) and a .255” neck diameter.

Barrel will also be a 1-8” twist.

Im likely to shoot the 77gn TMK or 80gn SMK with it.

[lee w 118]

Cheers Lee

[lee w 118]

Got some 75eld match, and  77g TMK to try .

[Catch-22]

I think if you just get the ‘.223 Wylde’ reamer you’ll be absolutely fine shooting anything up to 80gn. There’s enough freebore to permit the long bullets to seat long enough to maximise internal case volume...but also short enough to allow you to chase the lands as they erode over time. The Wylde reamer is a common reamer and a lot of rifle smiths will have one in their inventory. 

[lee w 118]

Thanks for your advice,  but im not looking at a .223 case in 224

Its a 6mm GT case necked to .22. Not every ones cup of tea 😁

[Catch-22]

Ah ok, though with the extra capacity I’d personally be looking at the 85gn Eld-m or Bergers 85.5gn Hybrid or 90gn VLD. The BC spanks that of the 75gn ELD and is definitely better than the 80gn ELD.

With the above in mind, go with a faster twist (1-6.5”)

You've got the extra capacity - would be a shame not to fully realise it.

[lee w 118]

Cheers  Lee

[KABOOM]

With a twist rate for the heavies I would never worry about the 53 grn in the same chamber should work fine. I would make sure my brass was trimmed and had good contact on the ogive.