Which Twist Rate

[lt211]

1/7 all around, but 1/9 is not useless! I have 3 Colts in 1/7and a LMT in 1/7 twist but my Colt Tactical in 1/9 shoots real fine. The Tactical shoots Fed Gold Medal Sierra Match BTHP like no other so I wouldn't call it useless.

[Robb Jensen]

1/7 all around, but 1/9 is not useless! I have 3 Colts in 1/7and a LMT in 1/7 twist but my Colt Tactical in 1/9 shoots real fine. The Tactical shoots Fed Gold Medal Sierra Match BTHP like no other so I wouldn't call it useless.

How does that study group of one 1x9 barrel shoot 77gr Sierra Matchkings suppressed? Would you risk a $1K sound suppressor on it?

[ChicagoTex]

Thank you for your ample clarification.

[GermanSynergy]

1:7 Chrome lined bore/chamber for all training/defence purposes.

[Belmont31R]

1:7'' would be ideal.

However, a 20'' HBAR with a 1:9'' twist, is pretty damn accurate with 55 gr. rounds.



BTW: Who makes 80 gr. SMK? Does the extra 3 gr. make a difference?

SMK=Sierra Match King

[Belmont31R]

How does that study group of one 1x9 barrel shoot 77gr Sierra Matchkings suppressed? Would you risk a $1K sound suppressor on it?

Federal makes a GMM in both 69, and 77 grain. If he is using 69 grain it may stabilize in a Colt 1x9 barrel.

[Robb Jensen]

Federal makes a GMM in both 69, and 77 grain. If he is using 69 grain it may stabilize in a Colt 1x9 barrel.

I'm sure it would in a 1x9, but my 73-77gr stuff wouldn't and would be very scary with a suppressor hence my finding 1x9 useless.

[bkb0000]

1/9 is nothing more than less capable.. and reduced capability is gay.

[C4IGrant]

I'm sure it would in a 1x9, but my 73-77gr stuff wouldn't and would be very scary with a suppressor hence my finding 1x9 useless.

Right.

I can also state (with confidence) that a 10.5", 1/7 twist barrel with a SF K Can WILL shoot 52gr Frang ammo (with no baffle contact).


C4

[Belmont31R]

I'm sure it would in a 1x9, but my 73-77gr stuff wouldn't and would be very scary with a suppressor hence my finding 1x9 useless.

I agree with 1x9 being a poor twist rate but just wanted to point out he could have been shooting a round that stabilized in his barrel.


All my stuff is 1x7 except for my Stealth which is 1x8.