WHERE CAN I GET INFO,BALLISTICS ETC.?
Gunsmithing 6MMCM
- Thread starter doc gordon
- Start date
Re: 6MMCM
Contact JohnL here on the hide. Nobody knows more about this cartridge than he does.
See ya around Doc.
C.
Contact JohnL here on the hide. Nobody knows more about this cartridge than he does.
See ya around Doc.
C.
Re: 6MMCM
Creedmoore or Competition Match?
Creedmoore or Competition Match?
Re: 6MMCM
calling johnl,please reply
calling johnl,please reply
Re: 6MMCM
Calling johnL
Calling johnL
Re: 6MMCM
Average the information for 6x47 Lapua and 243 and you'll be very close.
Average the information for 6x47 Lapua and 243 and you'll be very close.
Re: 6MMCM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">Average the information for 6x47 Lapua and 243 and you'll be very close. </div></div>
If its slower than a .243 then why would I not want to go the SLR route? I REALLY want to be able to push coated 115's past 3050. I want to shoot inside of a 260 if thats possible w/ a 6mm. From what i have read about the CM it seems possible, but not if its an average of the lapua and the .243
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">Average the information for 6x47 Lapua and 243 and you'll be very close. </div></div>
If its slower than a .243 then why would I not want to go the SLR route? I REALLY want to be able to push coated 115's past 3050. I want to shoot inside of a 260 if thats possible w/ a 6mm. From what i have read about the CM it seems possible, but not if its an average of the lapua and the .243
Re: 6MMCM
If you are talking about the 6mm Creedmoor, there is no reason to assume that you could get to 243 velocities. Less case volume necessarily means less velocity when both cartridges are loaded to their best velocities with the same bullet assuming both cases are capable of handling the same pressure.
If you are talking about the 6mm Competition Match, it is an improved 243, so the same applies: it will be able to push the same bullet faster than a 243 can because it has more powder capacity.
If you are talking about the 6mm Creedmoor, there is no reason to assume that you could get to 243 velocities. Less case volume necessarily means less velocity when both cartridges are loaded to their best velocities with the same bullet assuming both cases are capable of handling the same pressure.
If you are talking about the 6mm Competition Match, it is an improved 243, so the same applies: it will be able to push the same bullet faster than a 243 can because it has more powder capacity.
Re: 6MMCM
Better buy barrels a half dozen at a time and thread up three at a time when you do your build. If you shoot much you will need them. Especially if you go the blown out route. Flying fast has it's drawbacks. The 6.5s aren't that much inferior with a better barrel life. Bullets have a good BC and easily available also.
Better buy barrels a half dozen at a time and thread up three at a time when you do your build. If you shoot much you will need them. Especially if you go the blown out route. Flying fast has it's drawbacks. The 6.5s aren't that much inferior with a better barrel life. Bullets have a good BC and easily available also.
Re: 6MMCM
My last 6 Competition Match barrel went over 3,800 rounds before I replaced it. It still had plenty of life left in it, but I wanted a lighter (light palma vs Tubb) contour barrel.
All I shoot is coated 115s going 3050-3150 with H1000.
I have shot the 6CM in a Tubb2000, AIAW and AI-X.
I am very happy with the caliber.
My last 6 Competition Match barrel went over 3,800 rounds before I replaced it. It still had plenty of life left in it, but I wanted a lighter (light palma vs Tubb) contour barrel.
All I shoot is coated 115s going 3050-3150 with H1000.
I have shot the 6CM in a Tubb2000, AIAW and AI-X.
I am very happy with the caliber.
Re: 6MMCM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: doc gordon</div><div class="ubbcode-body">calling johnl,please reply </div></div>
Damn guy's yall remind me of my wife after work.
The 6 CM will drive any 105 - 115 gr. bullet past 3000 fps with no problems. You can go much faster but be prepared to get on a first name basis with your gunsmith (Yo Chad). If you keep the loads in the 3000-3100 range you can get in excess of 3000 rds. out of a barrel. The go to powder is H1000 at around 49 grs. Stick with Winchester brass.
I shoot my fireform loads(47-48 grs. H1000) in matches all the time and have never noticed any difference in my scores so you don't have to worry about buring up a barrel with fireforming chores. It is a load it and shoot it proposition.Just put a good jamb on the bullets for the first firing and you just fireformed your brass. Hope that helps I know I just hit the top of things but there is no big mystery here just a good cartridge that does give really good barrel life for the level of performance you get in return.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: doc gordon</div><div class="ubbcode-body">calling johnl,please reply </div></div>
Damn guy's yall remind me of my wife after work.
The 6 CM will drive any 105 - 115 gr. bullet past 3000 fps with no problems. You can go much faster but be prepared to get on a first name basis with your gunsmith (Yo Chad). If you keep the loads in the 3000-3100 range you can get in excess of 3000 rds. out of a barrel. The go to powder is H1000 at around 49 grs. Stick with Winchester brass.
I shoot my fireform loads(47-48 grs. H1000) in matches all the time and have never noticed any difference in my scores so you don't have to worry about buring up a barrel with fireforming chores. It is a load it and shoot it proposition.Just put a good jamb on the bullets for the first firing and you just fireformed your brass. Hope that helps I know I just hit the top of things but there is no big mystery here just a good cartridge that does give really good barrel life for the level of performance you get in return.
Re: 6MMCM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JACQ</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">Average the information for 6x47 Lapua and 243 and you'll be very close. </div></div>
If its slower than a .243 then why would I not want to go the SLR route? I REALLY want to be able to push coated 115's past 3050. I want to shoot inside of a 260 if thats possible w/ a 6mm. From what i have read about the CM it seems possible, but not if its an average of the lapua and the .243 </div></div>
I assumed above that you meant the 6-6.5Creedmoor, not the Comp. Match.
Any of the options above will get you inside the 260 at the expense of barrel life. The question is how much inside the 260 you want to go.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JACQ</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">Average the information for 6x47 Lapua and 243 and you'll be very close. </div></div>
If its slower than a .243 then why would I not want to go the SLR route? I REALLY want to be able to push coated 115's past 3050. I want to shoot inside of a 260 if thats possible w/ a 6mm. From what i have read about the CM it seems possible, but not if its an average of the lapua and the .243 </div></div>
I assumed above that you meant the 6-6.5Creedmoor, not the Comp. Match.
Any of the options above will get you inside the 260 at the expense of barrel life. The question is how much inside the 260 you want to go.
Re: 6MMCM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JACQ</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">Average the information for 6x47 Lapua and 243 and you'll be very close. </div></div>
If its slower than a .243 then why would I not want to go the SLR route? I REALLY want to be able to push coated 115's past 3050. I want to shoot inside of a 260 if thats possible w/ a 6mm. From what i have read about the CM it seems possible, but not if its an average of the lapua and the .243 </div></div>
I assumed above that you meant the 6-6.5Creedmoor, not the Comp. Match.
Any of the options above will get you inside the 260 at the expense of barrel life. The question is how much inside the 260 you want to go.
</div></div>
as far inside as i can get w/out any additional recoil or muzzleblast over the 260
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JACQ</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bohem</div><div class="ubbcode-body">Average the information for 6x47 Lapua and 243 and you'll be very close. </div></div>
If its slower than a .243 then why would I not want to go the SLR route? I REALLY want to be able to push coated 115's past 3050. I want to shoot inside of a 260 if thats possible w/ a 6mm. From what i have read about the CM it seems possible, but not if its an average of the lapua and the .243 </div></div>
I assumed above that you meant the 6-6.5Creedmoor, not the Comp. Match.
Any of the options above will get you inside the 260 at the expense of barrel life. The question is how much inside the 260 you want to go.
</div></div>
as far inside as i can get w/out any additional recoil or muzzleblast over the 260
Re: 6MMCM
The 6CM with 50g of H-1000 out of a 28 inch barrel will push the Berger 105 HYBRID 3,260ish FPS with absolutely no sign of over pressure. With a DA of 3,600 feet it takes right at 5.8mil/20.1MOA to get it to 1,000 yards.
That puts the 6CM shooting inside of just about any short action round I know of.
The 6CM with 50g of H-1000 out of a 28 inch barrel will push the Berger 105 HYBRID 3,260ish FPS with absolutely no sign of over pressure. With a DA of 3,600 feet it takes right at 5.8mil/20.1MOA to get it to 1,000 yards.
That puts the 6CM shooting inside of just about any short action round I know of.
Re: 6MMCM
I would go 6XC
I Love mine. It shoots inside a 260 easily with a Berger 105 Hybrid. Why would you want to shoot a 115 when the 105 Hybid is the cats meow?
I have shot my best groups a 100, 500, and 1000 with the XC and this combo.
Im running 3140 with a 27 inch barrel and H4350. I have a fast barrel. But it bugholes
No fireforming!!! No necking down!!! LOAD and SHOOT..
I would go 6XC
I Love mine. It shoots inside a 260 easily with a Berger 105 Hybrid. Why would you want to shoot a 115 when the 105 Hybid is the cats meow?
I have shot my best groups a 100, 500, and 1000 with the XC and this combo.
Im running 3140 with a 27 inch barrel and H4350. I have a fast barrel. But it bugholes
No fireforming!!! No necking down!!! LOAD and SHOOT..
Re: 6MMCM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: .257</div><div class="ubbcode-body">I would go 6XC
I Love mine. It shoots inside a 260 easily with a Berger 105 Hybrid. Why would you want to shoot a 115 when the 105 Hybid is the cats meow?
I have shot my best groups a 100, 500, and 1000 with the XC and this combo.
Im running 3140 with a 27 inch barrel and H4350. I have a fast barrel. But it bugholes
No fireforming!!! No necking down!!! LOAD and SHOOT.. </div></div>
The 6CM is a load and shoot round. Your first shot with new cases blows the shoulder out and your done. It shoots just as accurate the first time or the 10th. so it is a no loss situation. The 6XC will eat a barrel up in about 2000 to 2500 rounds and still not get 3100 fps. Plus brass is much cheaper than the XC.
A lot of people call BS on the barrel life of the 6CM but have no personal experience with it. If you stay with the slow burning powders it works. There are quite a few here on the "Hide" that can back this up.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: .257</div><div class="ubbcode-body">I would go 6XC
I Love mine. It shoots inside a 260 easily with a Berger 105 Hybrid. Why would you want to shoot a 115 when the 105 Hybid is the cats meow?
I have shot my best groups a 100, 500, and 1000 with the XC and this combo.
Im running 3140 with a 27 inch barrel and H4350. I have a fast barrel. But it bugholes
No fireforming!!! No necking down!!! LOAD and SHOOT.. </div></div>
The 6CM is a load and shoot round. Your first shot with new cases blows the shoulder out and your done. It shoots just as accurate the first time or the 10th. so it is a no loss situation. The 6XC will eat a barrel up in about 2000 to 2500 rounds and still not get 3100 fps. Plus brass is much cheaper than the XC.
A lot of people call BS on the barrel life of the 6CM but have no personal experience with it. If you stay with the slow burning powders it works. There are quite a few here on the "Hide" that can back this up.
Re: 6MMCM
+ the fact I am at 7 reloads on the same batch of Winchester brass.
+ the fact I am at 7 reloads on the same batch of Winchester brass.
Re: 6MMCM
For what its worth I've chambered a lot of wildcats over a 12 year period. Enough that few get my attention anymore.
This cartridge does however. Its simple, runs the number, and lasts a long time compared to the competitors.
It was developed by a very accomplished highpower shooter. Remember, highpower consumes ammo. Dedicated highpower consumes barrels. Stands to reason a hardcore course shooter would invest the time/effort/money to figure out a better mouse trap.
Just sayin. . .
For what its worth I've chambered a lot of wildcats over a 12 year period. Enough that few get my attention anymore.
This cartridge does however. Its simple, runs the number, and lasts a long time compared to the competitors.
It was developed by a very accomplished highpower shooter. Remember, highpower consumes ammo. Dedicated highpower consumes barrels. Stands to reason a hardcore course shooter would invest the time/effort/money to figure out a better mouse trap.
Just sayin. . .
