Rate of twist

[BleuBijou]

Should I use heavier bullets for faster rates of twist????

 

[FCSpringer]

yes depends on the bore. What cal are you talking? They all have ranges that work better in certain twists. But they will shoot all, just more accurate with certain grain loads in certain twist.

 

[BleuBijou]

.224 69gr over a 55 gr. 1in 7 twist

 

[onpoint]

.224 69gr over a 55 gr. 1in 7 twist

With that twist I would say 69gr.

I know the 6mm Remington's first came with a 1-9 twist. They were made to shoot the lighter bullets. They later changed that to 1-10 like the 243 Winchester. They then shot both the light and heavier bullets.

 

[FCSpringer]

Here you go. it gets confusing, tighter and looser can mean 2 different things to us, but this clears up some basic confusion and helps figure out better accuracy starting points.:thumbsup:

http://www.riflebarrels.com/products/caliber_twist_rates.htm

 

[FCSpringer]

I come across backward LOL. They will still shoot other loads, just that some accuracy issues can come out when using bullets on one range or the other that the twist likes.

 

[onpoint]

I had to fix my post too, I had it messed up. The 1-9 shot light bullets better. The 1-10 made the 100 grain bullets shoot better but it would shoot a wider variety of bullets better.

 

[moellermd]

In a 223 a 1 in 7. Should shoot either fine. A slower twist will get you more velocity but might not be able to stabilize the longer bullets. A 69 gr in a 1 in 12 might have the bullets hitting the target side ways.

 

[BleuBijou]

Great chart!!! Thanks Guys!!!:10sign:

 

[FCSpringer]

I just got my new AR reciever for my varmint build. I ordered a upper half with a 1 and 9. I got 500 rounds of 55gr nosler balistic tip. Hope they work well LOL. Seems to be a sweet load for anything 1 n 7, to 1 n 9 for everyone. Can't wait to fire her up.

 

[cheesy]

I want to say that in a .223, 1:12 used to be the standard twist because most people were shooting 50 or 55 grain bullets at the time. Now a lot are using the heavier bullets and you're seeing a lot more 1:9 and 1:7 twists. The heavier bullets shoot better in the faster twists. I've done a lot of reading in the AR forums, and many claim the 55's do just fine in the 1:7 twist barrels. I need to order an upper but am torn on what twist to get. I don't really see myself shooting heavy bullets in it, so leaning to 1:12. If I want a heavier bullet I'll go up in cartridge. But what if.......

 

[BleuBijou]

I just got my new AR reciever for my varmint build. I ordered a upper half with a 1 and 9. I got 500 rounds of 55gr nosler balistic tip. Hope they work well LOL. Seems to be a sweet load for anything 1 n 7, to 1 n 9 for everyone. Can't wait to fire her up.

Those shoot sweet in my 22-250!! I can shoot a quarter every time at 100 yds! Let me know how they work for you! Where are you finding Bullets anyway!!! Especially 500??? LOL!! Actually I want to know!!!:thumbsup::thumbsup: