short bbl 243

[Eric Leonard]

I have a Stiller Tac 30 action with a Krieger HV 8 twist bbl at 28 inches,,it is in an AICS 1.5 chassis and it shoots the 105 VLDH with 41.5 H4350 at 3200 in very tight groups and is a hammer to 1200 yards,,

what I am considering is cutting the bbl back to about 20-21 inches to use it as a deer rifle out of a shooting house where shots can get to 600 yards,,

how much velocity would I loose cutting 8 inches off the bbl,,,I have another Bartlien 6BR bbl with low round count I could use for the project if it is gonna take me down to slower than 6BR speeds,,
just wonder what speeds you guys get from a 8 twist 20 inch 243 with 105 class bullets??

thanx,

 

[stacy]

150 TO 200 FPS ABOUT 25 FPS PER INCH OF BARREL IN MOST CASES !

 

[MarkS]

I have a Stiller Tac 30 action with a Krieger HV 8 twist bbl at 28 inches,,it is in an AICS 1.5 chassis and it shoots the 105 VLDH with 41.5 H4350 at 3200 in very tight groups and is a hammer to 1200 yards,,

what I am considering is cutting the bbl back to about 20-21 inches to use it as a deer rifle out of a shooting house where shots can get to 600 yards,,

how much velocity would I loose cutting 8 inches off the bbl,,,I have another Bartlien 6BR bbl with low round count I could use for the project if it is gonna take me down to slower than 6BR speeds,,
just wonder what speeds you guys get from a 8 twist 20 inch 243 with 105 class bullets??

thanx,

If it shoots like you say, leave that barrel be. In a shooting house the long barrel should not hurt you. I don't like to change things that work. Do another barrel.

Mark

 

[Eric Leonard]

prone off the Atlas bipod and a rear bag it will shoot bugholes at 100 yards and less than 3 inches at 600 is no problem and it is a lazer beam man,,with a 250 zero shooting deer kill zone size targets it is a dead hold to 325-350 and 400 yards is 3 MOA ,,500 yards is 5 MOA and 600 yards is 8 MOA on the 4.5-14 LR/T M1 ,,
shooting the 10 inch gong at 1,030 yards on the farm I have better luck with this rifle than my 6.5x47 or 6 BRDX bench rifles,,one day wind wasnt too bad I hit it 16 in a row and 18 of 20 shots,,

I get it the 243 may be hard on bbls but I really like how it shoots and the cheap ammo from Walmart with the 90 gr Accubonds shoot really well at 3025 fps also if I needed them in a pinch,,

 

[trailrider121]

I had a 243 win shooting 105 vld's, H1000, at 3000 fps with a 26" 1:8 twist barrel. Chopped it to 20 1/2", and with same load it dropped to 2885 fps avg. Hope this helps.

 

[Zero333]

Trailrider is right on the money. I'm getting a lil over 2,900 fps from a 22" stick.

 

[Dale700]

First I would like to say that I am a 243 fan and have been for years . Let me reduce everything to the ridiculous.. the average barrel life of any 6mm is approximately 38 seconds... yes you read this right... that is if you could have a bullet long enough to go 3000 fps for 38 seconds down your tube the life would be over so... 243 v 6slr my be the difference of a half second or so . Shoot what you won't and what you have confidence in , have fun , it's ALL good.

 

[Iowa Fox]

I had a 243 win shooting 105 vld's, H1000, at 3000 fps with a 26" 1:8 twist barrel. Chopped it to 20 1/2", and with same load it dropped to 2885 fps avg. Hope this helps.

With my 15" barrel 243 Savage using Hornady 105 match and H100V my chrony average is 2743. Wasn't sure if I should trust those numbers but I put 2740 in my ballistic program and the clicks were where they should be to 1000 so it must have been. To get the chrony set up I had the grandson launch a few BBs over the screen. He was mad that he was 90 fps short of their advertised MV on the box. I was going to give it a couple drops of pell gun oil in the oil hole to see if we could get him there but we ran out of time.

 

[kapt]

Let me reduce everything to the ridiculous.. the average barrel life of any 6mm is approximately 38 seconds... yes you read this right... that is if you could have a bullet long enough to go 3000 fps for 38 seconds down your tube the life would be over so... 243 v 6slr my be the difference of a half second or so .

Not quite..

If a bullet flies at 3000 fps, it will pass through a 24″ barrel in 1/1500th of a second. If you have a useful barrel life of 3000 rounds, that would translate to just two seconds of actual bullet-in-barrel life.
IF you are worried about barrel life and settle for something that claims more, will you be happy ?

 

[Dgd6mm]

This thread is about lost of speed due to the reduction in barrel length.... It has nothing to do with .243 vs 6slr barrel life.


Don Dunlap