Remington sendero twist rate question

[Hankthebald]

I picked up a very low mileage Remington Sendero in 223 and was wondering if anyone knows what twist rate the barrel is. I tried some Sierra 69 BTHP and they were not terrible but I then tried some 68 Hornady’s and they all went into the target sideways. I was wondering if the bullets were too heavy for the twist rate or I was sold a lemon?

 

[pacificman]

Sounds like you might have a 1 in twelve or slower twist and you will need to try some lighter weight
bullets. If your bullets are hitting the target sideways it would be the wrong twist rate for the bullets
being used ...I don't think there would be anything wrong with your barrel...just your twist rate to bullets
being used.

 

[SteveOak]

You can measure the twist rate with a cleaning rod. Put a piece of tape on the cleaning rod, mark it with a pen and pull it until it competes one revolution and measure how far out it moved.

Regardless of what the factory says the twist rate is, it might be different, if only slightly.

If you measure you will know for sure.

 

[B23]

They are often mistaken for and called Sendero models but they're correct model name is VS SF and like the Sendero models there was a VSSF I and a VSSF II. Regardless of if it's a "I" or "II" all of them chambered in .223 had 1-12 twist barrels.

 

[17VLD]

It sounds like a 12 twist,but it is very odd that the Sierras worked and the the Hornadys did not,I don’t see how a 69 could work at all in a 12.Most 223 bolt rifles are 12 twist and most other bolt action 22centerfires are 14.Slowly the gun manufacturers are coming around,Savage for instance now has a 9 twist 22-250.Funny how ARs are mostly 7 twist now and are really not for the most part able to take full advantage of the bullets that are meant for that fast twist.I have a PSS and it is a 9 twist,it does well with 68-69s and the light 40s as well.I would try some 53 V-Max’s in your rifle and get after some varmints and call it good.
Matt

 

[hikfromstik]

The 68gr hornadys are a longer bullet than the 69gr sierra's. If your shooting a 1-12" then Berger 64gr varmint is probably the max weight . You should try the 53gr hornady vmax (.290 bc) , the 69gr Sierra is .301 . The speed from the 53gr will trump the slightly higher BC of the 69gr . The

 

[Rust]

Yeah, I have an early production VS-SF, 1-12 twist. Inside 300 yards I have a very accurate 40 gr Nosler BT load at 3600 fps. Running the numbers no heavier higher bc bullet can match it for drop or drift inside 300 yards simply because of the much higher muzzle velocity. But it drops velocity faster than the heavies so by around 350-400 yards the advantage swings back towards the heavier higher bc bullets.

Funny thing is nobody believes it at first, and many still won't believe it even after running the numbers in their own ballistics calculators.

If you want to get to 600 yards reliably then you'll need to rebarrel, 1-7 for up to 80 gr bullets and 1- 6.5 for the 90 grainers, both with a lot of freebore so as to seat the bullets long enough to keep them from taking up powder space in the case. Something like a Wylde chamber or similar chamber developed to turn the .223 into a long range shooter.

 

[270WinDude]

Yeah, I have an early production VS-SF, 1-12 twist. Inside 300 yards I have a very accurate 40 gr Nosler BT load at 3600 fps. Running the numbers no heavier higher bc bullet can match it for drop or drift inside 300 yards simply because of the much higher muzzle velocity. But it drops velocity faster than the heavies so by around 350-400 yards the advantage swings back towards the heavier higher bc bullets.

Funny thing is nobody believes it at first, and many still won't believe it even after running the numbers in their own ballistics calculators.

If you want to get to 600 yards reliably then you'll need to rebarrel, 1-7 for up to 80 gr bullets and 1- 6.5 for the 90 grainers, both with a lot of freebore so as to seat the bullets long enough to keep them from taking up powder space in the case. Something like a Wylde chamber or similar chamber developed to turn the .223 into a long range shooter.

Pretty much exactly what I was thinking. When I daydream about rifles I instantly tend to want heavy-for-cal with fast twist but for 300yd guns it seems hard to beat those 40-50 gr range bullets shooting fast. Due to saving powder on reloading and ability to do f/tr the 223 with 1-7ish shooting 90gr vlds sounds almost better then the 22-250 but I'd be more then happy with the OPs gun shooting your 40grainers.

 

[flatlander]

The last Win M70 Stealth I bought was a 223 with an advertised twist rate of 1-9. Was dinking around with some heavier bullets in it before re-barreling, and found it'd shoot pretty decently with S80MKs at 600yds. When I checked the twist rate with a snug-fitting patch on a Dewey rod, I found the actual twist rate was 1-8.3 - no telling what you might get with these el cheapo button rifled OEM bbls. This one had some nasty machine marks across the lands out at the muzzle end, but as I said, it shot pretty decently, and I never really saw any excess copper fouling due to the mess at the muzzle.

I wound up re-barreling it with a PacNor hvy varmint contour with 1-7.5tw, and it's been a very good shooter ever since.