243 Win vs 6mm Remington

[Sooner04]

I am looking at getting a factory rifle for the 1000 yard varmit/factory class in Pella, IA next year and was wondering if anyone has either shot one of these calibers at that range and/or would have an opinion on which would be a better choice.

Most of the factory rifles are 30 caliber; but there are weight restrictions and I had problems with just a .308 last year getting consistent return to battery.

I can't see why a .243 with a Berger VLD couldn't shoot well at that range; and someone mentioned the 6mm Remington to me,which I know nothing about) saying I may be able to use a heavier 6mm bullet in the 115g range.

Any advice or thoughts?

Sooner04

 

[gme]

I shoot a 6mm remington at 1000 yds in one of my B1's I can easily exceed 3100 fps with the 115's and it really shoots well, but requires the use of a 1-7.5 twist barrel I don't think that any factory rifles offer that caliber with a twist rate that fast.
http://competitionshootingstuff.com/_wsn/page3.html
Gary

 

[Sooner04]

Great point about the twist; I think the lowest factory I saw was 9 1/4 with Remington, Savage does 9 1/8. So that would say 107g SMK's or the 95/105 Berger.

Have to do some more looking into that; but what sucks is you are so limited with factory guns especially if you want to shoot the 6mm REM.

Thanks for input!

Sooner04

 

[NeilNE]

Sooner04, I also shoot at Pella, with a factory gun. You will not get a factory gun to track like the LG or HG, or track at all. No three inch or wider forend.

The 6mm Rem. hold more powder so it will push any weight bullet faster than the 243, normally, always exception. Twist, length of barrel and some barrel just shoot faster.

 

[Sooner04]

Hey Neil, I shoot in the LG, HG but stopped doing the factory and want to start up again next year which is why I am doing some early planning here.

I know who you are I just can't picture it; you come over with Mike from Lincoln, NE don't you?

This is Casey Setsodi formerly of Lincoln, NE myself for 20+ years. I'll have to take a look at one of your 6mm REM cartridges on the 19th if you are coming over then.

Casey
Sooner04

 

[MarkS]

sooner04,

The factory gune will not stablize the 105 berger and 107 Sierra's. They will the Hornady 105. Other good bullet are Berger 95 gr, 90 gr, I would lean to the 243 for the better beass - Laupa.

 

[frankgreen]

Marks is correct on the 105 bergers and the 107 sierra's not stabilizing in a factory barrel because the twist is to slow. I know of guys shooting a 8.5 twist in chambers like 6mmx284. I shoot a 6mm rem. chamber in a prone gun and f-class style rifle. Twist is 1-8. On the 30" finish length barrels I'm running velocities of 3150 - 3180fps. Two different guns/barrels. I believe that the 6mm rem. is easier on the throat than the .243 win. but both are still barrel burners. Yes I do like the lapua brass better as Marks said so. Wish I could get it for the rem. My loads are N165 with a charge of 47gr. Not max. but close. Stay away from the double base powders and this will help barrel life a little bit. Still remember that every barrel is a individual. Any questions give me ring. Frank at Bartlein Barrels 262-649-1574. Talk to you later.

 

[NeilNE]

Sooner04 Yes, I'm with Mike and Jeff.
I do not shoot the 6Rem anymore, shot out barrel.
I do remember you, as once living in Lincoln. Mike and Jeff will be there Fri. night and I will come Sat. morning. Bonsai run !!!!! I'll see you the 19th

 

[rhino]

You might get away with a 105 or 107 shooting it fast. 115 I don't think so.

However many factory rifles will shoot the 95 Berger VLDS..which has a nice BC.

.243 has lapua brass which is nice.

6mm Remington has a longer neck and more case capacity. Longer neck will allow you to chase the throat as it gets longer.


RHINOUT!

 

[frankgreen]

The 6mm rem as a standard factory chamber has a long throat. If you are gonna go this route get a new reamer with a reworked shorter throat. Later, Frank

 

[cntryboy1289]

Can you not buy Lapua 7mm Mauser and then neck it down to 6mm? You get some very good brass this way.

 

[StephenPerry]

6 Rem
I own a 6 Rem. Not sure of the barrel maker but is a 20 1/2" barrel .945 at the muzzle. Don't know the twist don't care. I bought the gun from my boss at his gun shop about 1985. The action is a Springfield a Canjar set trigger with a nice Birdseye maple stock with checkered metal butt plate. Originally it had a 26" barrel so I had the barrel shortened to 20 1/2" and the fore end shortened to match a 6" shorter barrel. I first put a Tasco 24X on later several other hi-power scopes like my Lyman 36X. My intention was to shoot targets and any critter that I could get in my cross hairs.
I only loaded 1 bullet the Sierra 70 BT. I worked with 2 powders IMR 4350 and H4831 but other powders would work. For primers I used CCI 250 and WLR. My loads are in the Sierra Manual.
I have a few ideas on using other cases and necking them down. I did this with 30-06 cases. Either commercial or military work fine. The reason I did this was I could get thicker necks once formed and trimmed from 06 cases. I neck turned the new formed cases only taking the old skin off the necks, on some the turner didn't clean all the way around but that was fine all I wanted was a concentric neck. With a seated bullet I was within .004 of the chamber dimension on each side.
The gun shoots well. Not a BR gun. I know what a BR gun does I own several but approaches 1/2" average at 100yds. Don't know too many varmints smaller than a 1/2" unless you includes crickets.
Point of all this several calibers like the .222 and .243 can benefit from tight necks which necking down larger brass can provide. I really like to neck down .223 military, WCC 64, to make .222. This involves some neck shortening but a Lee Power trim attachment can handle that. Be creative with your loading.
Stephen Perry

 

[tightneck]

Stephen,
I,m trying to imagine what the reason would be for cutting a 6mm Rem. barrel off at 20.5". All I can come up with is a lightweight mountain rifle, but you say the barrel is .945" at the muzzle. Obviously not lightweight so what gives, do you just like lots of muzzle flash and concussion or did you have some other motive? Burning 4350 or 4831 in that barrel with a light bullet would be impressive at night.

 

[StephenPerry]

Tightneck
I cut the barrel because I was trying to get it to weigh 10 1/2 so I could shoot it in BR. It never made it below 11 lb. The barrel shoots the same at 20 1/2 in as it did at 26 in.
Recoil is no big deal with an 11 lb rifle. I like the gun now and it shoots well.
Stephen Perry

 

[jdavis62]

Sombody please tell me how to get my hands on Lampua 7MM BRASS
Thank you