anyone useing a 6.5x47?

BATattack · Post by **BATattack** » Wed Jan 14, 2009 10:25 pm

is anyone useing a 6.5x47? what rifle, load and accuracy are you getting?

Post by **AlanF** » Wed Jan 14, 2009 11:00 pm

Barry Lewis used one at the National Queens last year - I don't believe he's a member of this forum. I can tell you that at some ranges it had the best elevation of any rifle there. From memory it was barrel blocked with a very short heavy straight profile barrel. I think he was using 120gn class projectiles, not 140s.

Alan

IanP · Post by **IanP** » Thu Jan 15, 2009 7:38 am

There are 4 being used in Adelaide (2 being assembled at the moment) that I know of and a few 6mm x 6.5 47L variants being shot as well.

BATattack · Post by **BATattack** » Thu Jan 15, 2009 10:53 am

yeah they seem to have a lot of potential. good brass, .308 boltface, decent barrel life, hight quality projectiles etc

Post by **AlanF** » Thu Jan 15, 2009 11:39 am

You might find that the new RL-17 powder gives them a healthy boost in velocity too - if there is a down side it is that they give away quite a few fps to the likes of 6.5-284, 6.5x55AI etc.

Alan

IanP · Post by **IanP** » Fri Jan 16, 2009 7:33 am

AlanF wrote:You might find that the new RL-17 powder gives them a healthy boost in velocity too - if there is a down side it is that they give away quite a few fps to the likes of 6.5-284, 6.5x55AI etc.

Alan

RL17 should give the 139-142gr projectiles 2900+fps without pressure issues but this powder wont be in Oz until the end of 2009, damn!

bruce moulds · Post by **bruce moulds** » Fri Jan 16, 2009 12:11 pm

but alan,
they could be, like the 284 win, more accurate than the big case 6.5 cartridges! :wink:

Post by **AlanF** » Fri Jan 16, 2009 12:29 pm

bruce moulds wrote:but alan,
they could be, like the 284 win, more accurate than the big case 6.5 cartridges!

Agreed Bruce, they probably are, but then the 6PPC is more accurate again. Somewhere between the extremes of accuracy and wind bucking capability (and not forgetting running cost), there is an optimum compromise. We all have our own opinions about where that compromise is

! I think the freedom to choose your calibre gives F-Open something special, don't you?

Alan

bruce moulds · Post by **bruce moulds** » Fri Jan 16, 2009 4:58 pm

yes alan you are right.
but you know the rules. people like me are morally obliged to say such stuff.
bruce.

Post by **AlanF** » Fri Jan 16, 2009 6:49 pm

I understand Bruce - you just couldn't forgive yourself for letting the opportunity go by. This Bendigo Team event is going to be good. Will you be chief sledger for SA?

Alan

bruce moulds · Post by **bruce moulds** » Fri Jan 16, 2009 7:07 pm

we are all pretty good at sledging over here. it seems to be a part of the sport. (in a friendly way).
how is the teams deal getting on. how many teams, & how many per team.
there is not much feedback happening here.
bruce.

IanP · Post by **IanP** » Mon Jan 19, 2009 7:43 am

Getting back on subject here, I use 41.8gr of 2209 for 2920fps with 130gr Berger VLDs in my gun that has been reamed to suit 120-142gr projectiles.

Another shooter using the same Berger projectile in a gun reamed to suit up to the 130gr projectiles is using 38gr of RL15 for approx the same velocity as I'm getting.

Accuracy is very good for both of these loads.

BATattack · Post by **BATattack** » Tue Jan 20, 2009 7:53 pm

that sounds good ian. what was your starting load for 2209, how far in to the lands and have you found any preference in primers? i think the berger 130 would be just about ideal so ill start with that and see how things go.

IanP · Post by **IanP** » Wed Jan 21, 2009 8:55 am

BATattack wrote:that sounds good ian. what was your starting load for 2209, how far in to the lands and have you found any preference in primers? i think the berger 130 would be just about ideal so ill start with that and see how things go.

I tested both 2208 and 2209 powders in my gun using QuickLoad as a guide and settled on 2209 as the pressure curve is more rounded and suits my 30.5" barrel. I also looked at this article http://www.6mmbr.com/gunweek085.html for additional info but found I needed more powder as my reamer is for longer projectiles (upto 140gr).

I jam the Berger 130gr VLDs, .010" into the lands and tested this load with both CCI BR-4 and CCI 400 primers. I now use CCI 400 primers, as in my limited testing I could not find any difference between them and the 400s are cheaper to buy. My load of 41.8grs is a full case of powder and possibly under light compression.

The velocity Of 2920fps was necessary with my load and barrel length to get me onto the 4th node using the OBT system. OBT = Optimum Barrel Time and to understand this you need to read Shock Wave Theory and have a OBT chart. QuickLoad software calculates using your load, etc, and gives you the time the bullet is in the barrel. The idea being you want the bullet exiting the muzzle when the shock wave is at the breech.

If OBT interests you then look here http://www.the-long-family.com/OBT_paper.htm

You may want to start at 40.5 and work up if your gun and action is similar to mine. I have a Barnard action and Krieger barrel with a 1:8 twist. Hope this gives you some food for thought!

BATattack · Post by **BATattack** » Wed Jan 21, 2009 6:36 pm

no worries ian! ive just printed that article and will have a read later. how many reloads are you getting out of your cases or is it too early to tell?