Info on how to have chamber cut, freebore, for .308 shooting 200.20x Burger hybrids

[B muzguy]

Thinking of going with a 30 inch bull barrel .308 Caliber. Need information to tell Criterion how to cut my chamber maybe Criterion will know I don't know. thought I would ask you people first.

How much freebore? don't want the bullet setting clear out ready to fall out of the case.
What degree ?
And is 10 twist enough.
Like to be able to shoot a thousand yards and Beyond. Tired of shooting Barrel burners.

And everybody loves the .308

 

[Ned Ludd]

Many F-TR shooters are using the US FTR reamer that cuts 0.170" freebore and having great success with the 200.20X bullet. 0.170" freebore will put the boattail/bearing surface junction of the 200.20X not quite halfway out the neck in Lapua Palma brass. You can still load 185 Hybrids in a chamber cut with that freebore, possibly even 185 Juggernauts, although the Jugs would be seated well past halfway out the neck. Most F-TR shooters are using a 1 deg 30 lead angle. A 10-twist barrel is spot on for your intended purpose.

 

[Oleg S]

^^^^ This is it.
Only bull barrel maybe a little bit too heavy to meet official weight limit of 18.18 lb for F-TR rig.

 

[B muzguy]

Many F-TR shooters are using the US FTR reamer that cuts 0.170" freebore and having great success with the 200.20X bullet. 0.170" freebore will put the boattail/bearing surface junction of the 200.20X not quite halfway out the neck in Lapua Palma brass. You can still load 185 Hybrids in a chamber cut with that freebore, possibly even 185 Juggernauts, although the Jugs would be seated well past halfway out the neck. Most F-TR shooters are using a 1 deg 30 lead angle. A 10-twist barrel is spot on for your intended purpose.

Thanks

 

[jr600yd]

Yeah, a full 1.25 thick 30” barrel Is cutting it close. Most of the guys I know are using Heavy Varmit 30”

 

[D-4297]

Take a look at the Bartlein MTU 31" blank . It may get you under the weight limit , if done properly for 30" finish length . The AMU likes them .

 

[memilanuk]

Think heavy Palma, unless you *know* you have super lightweight components everywhere else - including the action (Al, Ti, etc.).

28" HV + SS action + McM XIT can have you squeaking up against the weight limit and swapping out for lightweight rings, trigger guard, shortened fore-end rail, 11oz bipod... though to be fair I think that first XIT I had was a little heftier than others.