Advice on which .243/6mm

[PAMONTY]

Ordered a Hart heavy contour in 8 twist the other day. I plan to shoot the 105 A-MAX. I haven't decided on which caliber yet though. Some say the 6mm-284 is a barrel burner, so I don't know. Maybe the .243AI, I have seen alot of these lately.

Any suggestoins???

Also would you have anything done with the neck?
Thanks
PennMonty

 

[jb1000br]

243 ack is probably the best compromise for an overbore 6mm as far as efficiency and barrel life go. plus you can get lapua or norma brass ready to go. a buddy of mine has both and he is tickled pink with the results with his 243 ack done by R.W.Hart & son in nescpoeck pa.

JB

 

[Darryl Cassel]

Pennmonty

Don't overlook the straight 243 Winchester.

I have a 30" 8 twist barreled rifle in the 243 Win. that shoots to 1100 Yards quite well and with repeatability. The 30" barrel gives much better velocity then a shorter one will in the 6mm caliber.

I use the 105 to 107 gr bullets in it and Lapua brass.
The effeciency of the 243 is well documented and the barrel life is MUCH better then the 6/284 or the Ackley or Gibbs versions of the 6mm.
I also have the 6/284 and have owned the Ackley and Gibbs 6mms over the years so I'm able to made the comparisons.

Good luck in your decision.

Later
DC

 

[Mysticplayer]

Do some research into the 6BR Norma, I think you will be impressed. Many 1000yd BR shooters are now using this and 105/107gr bullets. From 30" barrels, performance is very good, brass and throat life is wonderful, recoil is very mild. Ensure that you are using the long throat version.

If not, I would go with the 243, Reg or AI is up to you, because cases are so easy to get and you can form from 308match brass if necessary.

Jerry

 

[*WyoWhisper*]

Got somthing else for you to think about...

I would have said 243AI.. no brainner..
BUT... I have just finished some test loading with a 6mmAI WOW..

3250fps with a sierra 107 SMK.. not sure a 243AI that can do that.. I still have no pressure signs...

Just another thought.... the only advantage a 243AI has is brass...

 

[mbianchini]

*WyoWhisper*
I drive 106 Clinch Rivers 3340 out of my 243AI with no problems out of a 29" Lilja 3 groove. At one time i had them going a bit over 3400 but brass life was bad.243AI Crono Slip

242AI PICTURES

 

[*WyoWhisper*]

mbianchini ,

I will get to do more load development here in a week or so....

I hope to get 3500 outta the 107's... we'll see. I know that i can hold more powder and I have a 30" Krieger on this rifle so I should be able to get there...

hmmm.. I like the friendly competition stuff...

 

[PAMONTY]

Well, you guys have helped me answer a question I never thought to ask. The barrel I have on order will come 32" long and I was going to cut it down to 28". But after hear velocities you guys are getting I think we will leave it at 30"

PennMonty

 

[ottsixx]

Both rounds are super rounds the 243 win/6mm Remington I dont dig any of that ackley jazz I think if it came down to that Id just go the 6mm Rem. but I shoot some 243 winchesters that are just the neatest thing since sliced cheese...........and deadly accurate to boot..............

 

[adam32]

*WyoWhisper*
I drive 106 Clinch Rivers 3340 out of my 243AI with no problems out of a 29" Lilja 3 groove. At one time i had them going a bit over 3400 but brass life was bad.243AI Crono Slip

242AI PICTURES

I'm pushing 105 Bergers to 3350 with a .243 AI out of a 25" Broughton...gun)

 

[lovdasnow]

congrats on resurrecting a 6 year old thread. i like my 243 with the 90gr bergers, but now the 6x47 has caught my eye.

 

[Iron Worker]

Hey the 6x284 rules ! Mine has over a 1,000 rnds through it. I know for fact it has throat erosion and it still produces 12" MOA at 25 yds.

 

[Albertavarminter]

I'm pushing 105 Bergers to 3350 with a .243 AI out of a 25" Broughton...gun)

Hey adam,
Care to share your load data as I can only push 3120 fps with the 105 Amax from my 243AI in a 26" gain twist barrel.

49.5 Retumbo, CCI 200, 105 Amax.

Thanks

 

[Jayhawk]

Anybody shooting the 6mm-06 or 6mm-06 AI? That has to move the 105 Amax right along.