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jwv2001
Reply with quote  #9 
Here are a couple of loads that have shown to be very good for me with absolutely no signs of excessive pressure in my rifle. The static components are:
6mmBR Lapua brass
70 gr. Nosler Ballistic Tips
Remington 7 1/2 primers
My rifle is a Cooper M22 Montana Varminter with a 26" barrel.
Chronograph is an Oehler Model 35P.

34 gr. Varget 3361 fps. avg. 12 Sd
32.5 gr. VV N135 3400 fps. avg. 9 Sd

Both grouped in the high .1's - low .2's
GermanS1
Reply with quote  #10 
I might as well throw in my totally "standard" and somewhat slow load. It's only redeeming virtue is that it wins prone matches!

Brass - Lapua or Norma
Primer - Federal 205M, now also PMC Small Rifle Magnum (Russian)
Powder - Varget (ADI Mulwex 2208) 30.0 grains
Bullet- Lapua 105 moly coated seated 0.005" into lands
Neck tension - 0.003"

MV - 2760 fps from 30" barrel.
Moderator
Reply with quote  #11 
FYI, I'm getting about 2810-2850 fps with the 30.0 gr Varget load with naked 105s, and CCI 450s, in a PacNor 27" 3-groove barrel. The Velocity varies with seating depth. Lower number .020" into the lands (2.355" OAL), higher number .010" jumped (2.325" OAL).

Some of the variance between German's values and mine could be the chronograph, but also the moly-coating on his bullets reduces pressure. One barrel may shoot faster than another as well.

NOTE how moving AWAY from the lands can actually increase pressures in a small case like the 6BR. Also, if you have a longer freebore and seat in to the lands you may need more powder to reach these same velocities.
Bret
Reply with quote  #12 
My best load is 31gr. of VV N133 with 66gr. Barts Ultra's or 66gr. Fowlers just touching for my 200yrd. shooting. My rifle is a Ruger M77 MK2 with a 22in. HV Broughton 1/14 twist with a .263nk. chambered in 6mmBR Norma using Lapua brass, Action is trued and bedded, trigger is at 1 1/2 lbs., Scope is a Weaver T-36. All work was done by Bob Green (top 'smiths on BR site) and shoots very well. The gun and a target are pictured on the wildcat forum under 6talldog. Thanks again Bret.
USAPatriot
Reply with quote  #13 
Bret, what sort of velocity did you get with your 66 Barts and 31g of N133? That seems a bit much pressure wise but will research it further. I have a few dozen of those slugs still here to use up. -Rod-
roebuck
Reply with quote  #14 
Help I need some reloading info please. I am currently shooting an RPA rifle 6mbr using factory loads such as lapua and Norma 105s in a 1-8 twist with a 28 inch bull border barrel. This rifle has produced 1.5 inch group at 600 yds with lapua 105s (there are 15 witnesses on the day of the shoot) i have just won 2 f class shoots out to 600 yards last week with this rifle but i still think it will shoot better with home loads can anyone help with suggestions ( real ones ) as to trying diffrent loads in this rifle i have shot it at 1oooyds and it shot very well but i need some help trying to improve its performance and using the 28 barrel with maximum effect. over to you boys now regards Chris
Moderator
Reply with quote  #15 
Quote:
Originally Posted by roebuck
Help I need some reloading info please. I am currently shooting an RPA rifle 6mbr using factory loads such as lapua and Norma 105s in a 1-8 twist with a 28 inch bull border barrel. This rifle has produced 1.5 inch group at 600 yds with lapua 105s (there are 15 witnesses on the day of the shoot) i have just won 2 f class shoots out to 600 yards last week with this rifle but i still think it will shoot better with home loads can anyone help with suggestions ( real ones ) as to trying diffrent loads in this rifle i have shot it at 1oooyds and it shot very well but i need some help trying to improve its performance and using the 28 barrel with maximum effect. over to you boys now regards Chris


Chris--1.5" at 600 yards is about as good as it gets. If you want some more velocity, try Norma 203B or RL 15. Put those Scenars .010-.015" into the lands. You should also try the Berger 105 VLDs, jammed the same amount or more. A good starting load for 203B or RL15 (very similar powders) is 30.0 grains, but some guys are running as much as 31.2 in canted land barrels.

Generally speaking, the closer you can get to 3000 fps with the Bergers the better, but watch your pressure signs, particularly the ejector marks.

For your handloads we advise not to mess with the flash-holes--you can gently deburr them (if you see some burrs in a hole) but don't ream them larger. Note: recent lots of Scenar 105s are about .005" narrower in diameter than the Bergers--your barrel may show a strong preference for one over the other--but this also means a max load with the Lapuas may be too hot for the Bergers. Start .5 gr lower for your Berger load.
Mikem
Reply with quote  #16 
This load works well for me from a 6-BR, 26" Pac-Nor SM 1 in 8 twist, three groove barrel. 80g Berger FB match, with 30.5g of Varget and CCI BR4 primers, in Lapua fire formed and neck sized brass, with the bullet set .015 into the lands.
It Cronyed at 3022fps Avg, from this barrel, and no sign of high pressure.
I have only used it out to 300 yds so far. But shoots in the .2 moa most of the time. But I'm getting old, so you might do better.
Sorry if you were only interested in 105g bullet loads.
Mike..
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