Strange twist rate?

[Shooter760]

Hello everyone,

I inherited a Remminton 700 BDL from the 80s in .308 and it has had some good work done to it. Everything looks good to go, but I can’t figure out the barrel. It’s definitely a custom heavy profile, but it has no markings indicating who made it and the twist rate is 1:15. Has anyone seen a .308 with that slow of a twist or know what this was set up for? Thanks!

 

[Supersubes]

Hunter bench rest (think short range BR for score, not group) shooters use that twist for their flat base 110-ish grain BR bullets. It would also be suitable for the various 30 cal Varmint bullets. Both bullets are very short and have flat bases.

 

[Shooter760]

Interesting...thanks for the reply. What do you think the max range would be before it starts going all over the place?

 

[Supersubes]

According to Hodgdon, the Barnes 110 fb can be pushed to 3250 in a 24” barrel. When run through Ballistic, it would get to 1000yds going 1190 FPS, and take roughly 8.4 mils to do it. I didn’t put much effort into that, but 8.4 mile seems awful flat to me considering it’s got a .284 G1.


I recommend you get some 110 gr Varmint bullets and blow up some furry things with them.

 

[Shooter760]

According to Hodgdon, the Barnes 110 fb can be pushed to 3250 in a 24” barrel. When run through Ballistic, it would get to 1000yds going 1190 FPS, and take roughly 8.4 mils to do it. I didn’t put much effort into that, but 8.4 mile seems awful flat to me considering it’s got a .284 G1.


I recommend you get some 110 gr Varmint bullets and blow up some furry things with them.

Right on...thanks for the info! I will mess around with some different loads and see what she does. Varmint beware.

 

[b6graham]

According to Hodgdon, the Barnes 110 fb can be pushed to 3250 in a 24” barrel. When run through Ballistic, it would get to 1000yds going 1190 FPS, and take roughly 8.4 mils to do it. I didn’t put much effort into that, but 8.4 mile seems awful flat to me considering it’s got a .284 G1.


I recommend you get some 110 gr Varmint bullets and blow up some furry things with them.

whats the wind like??? that seems almost suspiciously flat

 

[Supersubes]

whats the wind like??? that seems almost suspiciously flat

Long day yesterday and knew it seemed off, but wasn’t willing to look at why.

 

[OLD308]

Never seen a 308 with a twist slower than 1-13. Not saying they are not out there. I would check the twist rate just to make sure it’s correct. Take all references for proper twist rates with a grain of salt. A lot of “justifying the purchase” in the rifle world. I have 308s in 1-12, 1-10, 1-8, and soon a 1-7 for an experiment. So far I’ve found none of the original arguments about fast twist to hold all the water that’s repeated. This is the reason for the 1-7 experiment.
Have fun with it and experiment! Really interested in your experience with this twist once you double check it. I would further suggest testing with some FGMM in various weights. Please keep us updated as you progress.

 

[XLR308]

Sounds like it was set up to compete with the 30BR or 30x47 just has a little more horse power and a little faster twist.
I think the preferred twist in the 30BR is 1-17" running 120-125 grain bullets in the 3000fps range from a 21" barrel.
Pretty damn efficient giving it's small case volume.
You may be able to run bullets in the 135 grain match king class with it pretty effectively.