Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
question on barrel twist
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Kiwi Nate" data-source="post: 353230" data-attributes="member: 8533"><p>With regard to a Hart barreled 7x57- I found that the 1:10 twist produced one hole groups with 140 grain bullets at 1" groups at 100 yards with 162 grain bullets. The groups simply opened up gradually as bullet weights were increased to 154 and then 162 grains. I agree with Mike, the 1:9 twist is good if you one day decide you want to play with heavy projectiles. I like the 140 grain AB for general use, its a good projectile but you might find yourself in a situation where you want to tweak your loads for a certain application in the future. As an example, the 7mm08 shines with the 162 grain Amax, very explosive and very fast killing, good on lean animals. </p><p> </p><p> Some of the heavy projectiles may seem slow on paper, but turn out to be shear dynamite out to 300 yards plus on game regardless of the low muzzle velocity. Its nice to have that option if you want to play later on. </p><p> </p><p>I also prefer a fat barrel contour on a short barreled rifle. I have a .308 Tactical, 20" jobby, always thought it was very light till I weighed it and found it was the same weight as my long magnums. Point is, I was completely fooled by weight distribution as opposed to actual weight. Even with the heavy barrel, I/friends complain about losing the sight picture during recoil. That said, I load the little bugger balls to the walls. I think the fat barrel helps this a lot too, seems to shoot sub .5 with everything up till it gets fouled up or too hot to touch (culling in NZ). </p><p> </p><p>I did some accurising work on a Sako Lightweight 21" barreled 7mm08 a while back, it was a real dog, I had to wait 30-40 seconds between shots and it couldn't handle a good fast load. Only gave sub MOA if I kept it dead cold and used just the right load- too finnicky for my tastes.</p></blockquote><p></p>
[QUOTE="Kiwi Nate, post: 353230, member: 8533"] With regard to a Hart barreled 7x57- I found that the 1:10 twist produced one hole groups with 140 grain bullets at 1" groups at 100 yards with 162 grain bullets. The groups simply opened up gradually as bullet weights were increased to 154 and then 162 grains. I agree with Mike, the 1:9 twist is good if you one day decide you want to play with heavy projectiles. I like the 140 grain AB for general use, its a good projectile but you might find yourself in a situation where you want to tweak your loads for a certain application in the future. As an example, the 7mm08 shines with the 162 grain Amax, very explosive and very fast killing, good on lean animals. Some of the heavy projectiles may seem slow on paper, but turn out to be shear dynamite out to 300 yards plus on game regardless of the low muzzle velocity. Its nice to have that option if you want to play later on. I also prefer a fat barrel contour on a short barreled rifle. I have a .308 Tactical, 20" jobby, always thought it was very light till I weighed it and found it was the same weight as my long magnums. Point is, I was completely fooled by weight distribution as opposed to actual weight. Even with the heavy barrel, I/friends complain about losing the sight picture during recoil. That said, I load the little bugger balls to the walls. I think the fat barrel helps this a lot too, seems to shoot sub .5 with everything up till it gets fouled up or too hot to touch (culling in NZ). I did some accurising work on a Sako Lightweight 21" barreled 7mm08 a while back, it was a real dog, I had to wait 30-40 seconds between shots and it couldn't handle a good fast load. Only gave sub MOA if I kept it dead cold and used just the right load- too finnicky for my tastes. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
question on barrel twist
Top