6mm remington loads,I need help

[jonbearman]

I have a savage heavy barrel(shilen select match) and am having trouble getting it settled in to a good load. I have tried varget and 75 grain hornady vmax with little luck in getting a good group. I have tried IMR4895 with berger 80 gr bthp match and the groups seem erradic.I have also tried h4350 47.0 gr and it was fair with groups around a half inch and 38.0 grains of 3031 and it was lousy,38.8 of varget,fair,39.0 of h335 and it shot a 1/2" group all with the hornady bullets suggested by my research. The barrel is 1 in 12 twist,straight taper stainless steel with a sss trigger set at 1 pound with a 6-24 baush and lomb scope with AO. I just want some idea's from your guys knowledge. Any help would be much appreciated. It is a 26" barrel by the way.

 

[UltraBR30]

I've had two 6-Rem's and found both to be fussy on seating depth to get any kind of precision accuracy from. I tried lots of bullets and powders but ended up having to tune seating depths to get anything good.

 

[skepler]

I have used 4831sc with very good luck. With 70 grain Nosler ballistic tips it shoots 50 grains of 4831 sc very well. With that load I touch the bullet into the lands.

 

[GerryM]

I think your bullet is a tad heavy for best accuracy,
Try some Berger 75 gr and under bullets with the 4895. I neck turn my brass and use benchrest primers Hope this Helps''

 

[CatShooter]

Most of the powders you are trying are kinda fast.

You might want to stay with powders in the speed range of H4350, 4831SC, and 4007SSC.

 

[40X Guy]

Jon, I have been down this road with trying most of the powders you mentioned, and finally found good old IMR-4350 a perfect fit for most bullet weights in a 6MM Remington. Groups were far better than anything else I tried. I use 45.0 grains under 85 grain class bullets. Of course work up to this.

Frank

 

[jonbearman]

Will 1 in 12 stabilize an 85 grain bullet?

 

[chestsprings]

I shoot both 75 gr. V-Max's, & Barnes 85 TSX's ( 1:10 twist)

as mentioned above, it's hard to beat H-4350, but R-19 gives me better accuracy, with a little more vel..

 

[harry.hacking@kiewit.com]

I shoot 70 gr sierra's and 95 gr sst, for the 70 gr I have been using Superform and for the 95 gr I use imr 4350. For some reason I could not get the 80 gr and 85 gr bullets to shoot very well. The most accurate combo I have is the 95 gr. and imr 4350. I have not been able to do enough load testing with the 70gr and superform but the few rounds I have put down the barrell look promising.

 

[AckleymanII]

In your 1-12twist, try the 80g Sierra Blitz BT with R#19 and a Win primer. Best accuracy will be in the 3500-3600 fps area and the load will be right at a max load FOR YOUR RIFLE, use Winchester brass and seat the bullet to touch the lands.

This is a mac daddy load for any kind of varmint and accuracy at 500 yards is outstanding!

 

[Steve Blair]

40X Guy is right about H4350 and lighter bullets. I have four 6mm Remingtons and the two varmint rifles shoot very well with H4350. The only exception is an outstanding crow load with Varget and 58 V-Max bullets. That stubby bullet is surprisingly accurate, producing ½" groups at just under 4000 from a 26" barrel.

The Berger 80 flat base varmint bullet has also shot very well in 12" twists using H4350. In fact, those bullets shot well in any 6mm or 6BR in which I have tried them.

 

[Elwood]

I have used 4831sc with very good luck. With 70 grain Nosler ballistic tips it shoots 50 grains of 4831 sc very well. With that load I touch the bullet into the lands.

For the love of god what speed are they doing? I use 50 grains of 4831 sc in a 6mm Crusader and get 3230 fps with 115 Dtacs.

 

[trappst]

I've got a 12 twist McGowen on a Savage action...it's a #3 contour at 23".

I haven't shot it much but IMR 4064 and H4350 w/70g Noslers didn't do so well in my barrel. I ended up giving R-17 a try and it's showing real promise. I still have to tweak my seating depth but it is producing much better groups already.

I had a 10 twist A&B barrel for a while that shot very well with the 80g Sierra and IMR 4350. The 80g Sierra is actually pretty fur friendly (coyotes) for a 6mm bullet. Exit holes were no larger than a 50 cent piece from 50 to 200 yards.

 

[GerryM]

Your 12 twist calls for the lighter bullets. 85 gr seem to be a tad heavy for that twist,
My best results for acccuracy with 85 sierra are with the 9 to 10 twist .
My own is a 9 1/2 twist. You could get by with the 85 gr for hunting but the 75 gr down will probably give the best accuracy. Bullet shape and bearing surface will effect your accuracy.

 

[nhm16]

I have a 24" 10 twist Douglas barrel on an old Savage long action. I've settled on 87gr V-Max, 43.5gr of IMR-4350, and CCI-200. Velocity is around 3140fps. 46 gr of H4350 works for me for 75gr V-Max'es for 3330fps. RL-17 also gave promising results, but I didn't pursue it; my experience with RL-17 in other cartridges tells me its seating depth sensitive.

 

[Steve Blair]

I've had two 6-Rem's and found both to be fussy on seating depth to get any kind of precision accuracy from. I tried lots of bullets and powders but ended up having to tune seating depths to get anything good.

This just did not seem right to me, so I did some research. The SAAMI 6mm Remington print shows a 3° leade angle, same as .30-'06 Springfield. It is often stated that the major accuracy difference between .30-'06 and .308 is the 3° vs. 1.5° leade angles.

Both my factory 6mm (.244) rifles gave acceptable accuracy for varmint shooting, but could be picky. Since rebarreling and with the two new rifles, all have custom barrels chambered with 1.5° reamers and provide fine accuracy. This might be a factor worth investigating. I am not ignoring the barrel quality difference, only noting that leade angles affect bullet seating and performance.

 

[jonbearman]

Could I learn that from a chamber cast or is there another way to predict the lead angle.

 

[Steve Blair]

You should be able to see the difference with a borescope. Compare it to a 6BR leade, which is almost certainly 1.5°.

 

[jonbearman]

Does anyone think I would be wise to rechamber this barrel to 6 br with the 12 twist.It is a stainless bul barrel,there is loys on meat to cut off and start over with a newer caliber which isnt as finicky.

 

[Steve Blair]

Why not? The barrel would need enough cut off to produce a clean chamber but should work fine. Make sure the reamer has a short freebore so that you can seat appropriate bullets near the lands. Many 6BR reamers have freebore in excess of .100".