.6mm Norma br load data needed

[bobcat93]

Hi guys,
I'm looking for some load data for the 6mm Norma br
Lapua brass
1-8 twist barrel.
Sierra 95 gr. MK
I have rem. 7 1/2 br, CCI 4 br, federal 205 match primers
Hodgdon,imr, alliant powders on hand.
Also need to now what works best with there bullet jam, or jump
Thanks

 

[Mozella]

Each rifle is different. The best (and safest) procedure is to consult a respected reloading manual or refer to an Internet site published by a well known manufacturer, IMR for example, and start someplace at or above the minimum charge weight. Do not exceed the maximum recommended charge weight.

Make several batches at various weights, usually in 2% increments, and test them. I like to work between 92% and 100% of published maximum for my initial batch. Some folks use 3 round groups, but I prefer 5 round groups for increased data confidence. When you find a likely charge weight, experiment with seating depths. Then, you might fine tune both the charge weight and seating depth with another round of testing.

Never load ammo based on a charge weight recommended by someone on the Internet unless you know for sure they aren't some 40 year old loser living in his Mom's basement. There are plenty of them out there.

Check out the IMR loading data site. It's very good.

 

[bobcat93]

I guess that's good advice, I check data..I wouldn't think there would be many site contributors on our forum that are that irresponsible
I'm just looking for a good starting load for the Sierra 95 gr. MK .
I see load data for the 95 gr. Berger bullets..can't find any on the Sierra..I guess if no one tried out this bullet and has some solid load development I will call Sierra tech this week
Thanks

 

[ASbobcat]

Hi guys,
I'm looking for some load data for the 6mm Norma br
Lapua brass
1-8 twist barrel.
Sierra 95 gr. MK
I have rem. 7 1/2 br, CCI 4 br, federal 205 match primers
Hodgdon,imr, alliant powders on hand.
Also need to now what works best with there bullet jam, or jump
Thanks

You might consider trying CCI450 primers. They are very consistent and tough. Federal 205's are a little softer, but work well if you're not pushing max loads.

I have found every Berger VLD bullet I've tried likes so jump .010-.015in in my barrels. Yours might like something different. I would try jumping before jamming, especially if you are looking for top velocities. Jamming and high pressure don't go well together.

RL 17 has worked extremely well for me with 95-108gr bullets. 150 fps more than any other powder in this cartridge with excellent case life and accuracy. RL 17 is also very docile when approaching max loads.

 

[Mozella]

I guess that's good advice, I check data..I wouldn't think there would be many site contributors on our forum that are that irresponsible
I'm just looking for a good starting load for the Sierra 95 gr. MK .
I see load data for the 95 gr. Berger bullets..can't find any on the Sierra..I guess if no one tried out this bullet and has some solid load development I will call Sierra tech this week
Thanks

Are you by any chance looking for information on the wrong bullet? As far as I know Sierra doesn't make a .243 95gr Match King. Could your bullet be the 75gr Varminter rather than a Match King?

Try a Google search on "Sierra Load Data 6mm" and you'll get this:
http://www.6mmbr.com/f/sierra_6mmbr_data.pdf

In the long run, you'll find more satisfaction in this sport doing your own research and development. It's not that hard to find officially published information in the Internet age, but you gotta' be sure you're looking for the right data.

 

[wapiti25]

The Norma brass will not take high pressures as the Lapua brass with out lose primer pockets. I shoot both and I found that I need to drop charges about 1 gr in the Norma brass,. My Norma brass is trimmed to the same length as Lapua as my barrel has the short neck chamber. I jam the 105 VLD in this barrel using Varget.

 

[KMart]

Are you by any chance looking for information on the wrong bullet? As far as I know Sierra doesn't make a .243 95gr Match King. Could your bullet be the 75gr Varminter rather than a Match King?

Try a Google search on "Sierra Load Data 6mm" and you'll get this:
http://www.6mmbr.com/f/sierra_6mmbr_data.pdf

In the long run, you'll find more satisfaction in this sport doing your own research and development. It's not that hard to find officially published information in the Internet age, but you gotta' be sure you're looking for the right data.

6mm .243 caliber (.243) 95 gr. HPBT MatchKing

​

The 6mm 95 grain Hollow Point Boat Tail bullet was designed to fill the need for a lighter weight alternative to the Sierra 6mm 107 MatchKing. This bullet is a popular choice for across the course and long range target customers. Sierra built this bullet off our ever popular 6mm 107 HPBT MatchKing design with a long ogive, small meplat and improved boat tail to preserve downrange efficiency, enhance accuracy, and reduce wind-drift.

While they are recognized around the world for record-setting accuracy, MatchKing® and Tipped MatchKing® bullets are not recommended for most hunting applications. Although MatchKing® and Tipped MatchKing® bullets are commonly used for varmint hunting, their design will not provide the same reliable explosive expansion at equivalent velocities in varmints compared to their lightly jacketed Hornet, Blitz or Varminter counterparts.
This bullet requires a barrel twist rate of 1x9” or faster.


The #1537 was introduced in 2008.

 

[KMart]

From the Norma website. It has been said here on AccurateShooter and other places that Norma 203-B and Alliant Re-15 are pretty much the same.

Bullet Sierra MK 95 gr
Bullet weight 6.2 g / 95 gr
B.C 0.480
C.O.L 58.5 mm / 2.303
# 1537

• Gunpowder Charge Weight Velocity m/s Velocity fps
  Norma 202 Max 29.6
  Min 28.1 892
  851 2927
  2792
  Norma 203-B Max 30.9
  Min 29.2 907
  860 2976
  2822

 

[bobcat93]

Yes they are Sierra 95 gr. Bullets.
There isnt much data I have found for this bullet.
I don't have Norma powder. I have an 8 twist barrel
I have hodgdon, alliant, IMR powders ..for the 6 mm Norma br. Cartridge.
I AM USING LAPUA BRASS..
I also have the primers listed above..
Has any one tried out these bullets what load , and powder have you used
Thanks

 

[Eric Leonard]

start at 29 Varget or 28 H4895 and work up,,Sierras seem to like a small jump IME,,

 

[Liven The Dream]

My 6BR 107's N-150 start at 28gr. Worked better than Varget..........................

 

[Eric Leonard]

95s seem to work better with Varget than 107s,,but I only shot a couple hundred 95s

 

[billlarson]

Never load ammo based on a charge weight recommended by someone on the Internet unless you know for sure they aren't some 40 year old loser living in his Mom's basement. There are plenty of them out there.


GOOD ADVICE..........