6.5 lapua initial test????

[Mega]

Not to hijack his thread, but you guys with experience with this round Im having one built with .288 neck whats your thoughts on this neck wasnt my idea the smith has that reamer.

My personal thoughts on this would be to order a reamer with a larger neck. Otherwise you will be stuck neck turning and in my experience, the round does just fine with a no turn neck chamber. Every lot of bras I have received since lapua went to the blue box my loaded rounds are .288.





Scott

You sure on the loaded rounds being 0.288" as that is what I measure new cases straight out of the box without a bullet. Seat a bullet and they measure 0.29050 give or take a few ten thousands of an inch since they aren't consentric. I think of the few I tried some might just nudge under 0.2910" so I'd call a "No Turn" a 0.293" neck given a minimum of 0.002" chamber clearance.

Maybe we get a different size Lapua Case down here under...???

One of my 6.5x47L's is a 0.294" and I feel it's a bit too much since I do like to skim necks about 75-80% to improve concentricity which ends up less than 0.001" or it goes in the reject box.

My Stolle with a 0.286" tight neck is a far more accurate setup and takes much more case prep but gee, it's worth it. I end up with less than 0.0005" runout at worse case and some barely make the dial gauge move. This is after fire forming and really think the Gunsmith did a top job with the PTG Reamer.

 

[model 12 toby]

my loaded rounds straight out of the box with a bullet seated measure .290 and I'm using a .288 bushing in my die.

 

[AckleymanII]

Blind hog found an acorn!

I have a new rifle, no Lapua brass. Made brass out of new Rem 22/250 brass, fire formed with 9.0g of Bullseye and cream of wheat, tuff of blue paper towel on top. Next firing, 37.5g of R#15, Fed 210, Sierra 123's shot 1/4"groups at 200 yards and two groups were in the 1's.

I am not a competitor, just shoot for fun. It will be interesting to see of the large primer gives any more velocity than the small primer. I got 100 fps more out of PMC 7.62x39 brass formed to 6 PPC vs the Sako brass and fed 205's....inquiring minds want to know.

 

[fm1947]

1/4 group at 200 yards was it a 5 shot group? that would calculate to .119moa if 5 shot you should be competeing

 

[LngDztnz]

I'm shooting 39.2 gr RL-15 behind 120 Sierra (Moly). Same load Darrell Jones won with. Read his article on Guns of the Week. He did an awful lot of initial work on the 6.5X47. My 100 yd, 5 shot group with this load measured in the high 1's. (.191)...
LngDzTnz

 

[model 12 toby]

is that pretty high pressure? have you shot in very hot weather with the rl-15? I'm thinking about shooting the rl-15 with the 123 a-maxes again and shooting them till the primer falls out. lol. jk. I got pressure much lower charge than that and much lower speed. also if there's that much difference in temp my shot at 730 yard varmints is going to be way off. what a dilemma.

 

[model 12 toby]

got 123 a-maxes to shoot. got .71 and .75 inch groups at 265 yards. only using 34.7 grains of rl-15. already getting over 2700 fps. Im going to maybe try to push the limits a little more. no sticky bolt lift yet.

 

[areaone]

It was 85 degrees, 39 gr. RL15, 120 Sierra, CCI450 seated to 1.998 to ogive, this is just to lands,I have a .123 FB.,Chrony at 3015 with 6 ES over three shots. , .75 3shot group at 300 yds, no pressure signs at all. Jon Beanland chamber and bedded. Finally found the node, I was getting a little frustrated, seating depth was the answer, minimal jump, no jam. for my rifle.

 

[model 12 toby]

i was very happy with my accuracy but my velocity is low. you saying maybe back em out a little and I'll be able to add powder and velocity without excessive pressure? thanks a lot. I'll definitely make some minor adjustments. back em up maybe .010 or so.

 

[areaone]

Pressure can be rifle specific. Work up in 3 gr increments, jamming creates greater pressure than a jump, adjust accordingly. How much neck tension? can also affect accuracy. What is you freebore, I have plenty of room for 39 gr RL15, and my bullet does not seat below the neck junction(disregarding the boattail portion). Watch for a donut if you seat too deep.

 

[model 12 toby]

i've been working in .3 grain increments. using a .288 redding bushing. loaded round is .290. accuracy is good. velocity is poor. I'll move slowly. probably just seat it .010 deeper. you have a l-n-l insert to measure bullet to ogive? I'm using 3.140 right now which would be 2.140 I guess. I'm going to back it to 2.130 and do another ladder test. overall length is maximum listed from the lapua website although they are different bullet. think it's 2.76 or something. I guess I am seated much shallower than you are. perhaps I should even go deeper than .010? guess I shouldn't change too much at once. thanks. let me know what you think.

 

[areaone]

Have my own reamer and print. Chamber is cut to print and I noted seating depth to rifling with the 120, 1.998 to rifling., your FB must be .140 or greater probably for 140 gr or more. the 123 Horn A max could be seated out further to touch the lands and give plenty of room for powder.

 

[model 12 toby]

another guy said .7 groups at 265? animal or target will never know whether it's going 2780 or 2980. I think I just need to find out what scope adjustment it needs to take to ge tto 770 yards. ;D

 

[BradY]

Give the barrel some time, and a few rounds. Some barrels will speed up after running in a bit apparently. Accuracy over velocity is the key.

 

[AckleymanII]

I am shooting 37.5g R#15 in a 6.47L with a 30" Krieger, 8.5 twist, with the 123g Sierra in formed 22/250 brass with the federal 210 Large rifle primer. Groups on two days were in the .300-.250 area with stiff winds. 37.5g is no were near a max load in my rifle. I shoot for fun, so with no Lapua cases available, I had no choice but to form some just for grins. Got a note from sinclair canceling my back order, no brass in sight was the cause.

I formed the cases with 9.0g of Bullseye with cream of wheat and tuft of blue paper towel stuffed in the end to keep powder from coming out.

I will start working on the 130g Berger next, along with doing a test to see how many shots I can get out of the same 3 cases.

Fun working with this little case for sure, makes me wonder how the 6.5/250 AI would perform...just for grins.

 

[Mega]

I am shooting 37.5g R#15 in a 6.47L with a 30" Krieger, 8.5 twist, with the 123g Sierra in formed 22/250 brass with the federal 210 Large rifle primer. Groups on two days were in the .300-.250 area with stiff winds. 37.5g is no were near a max load in my rifle. I shoot for fun, so with no Lapua cases available, I had no choice but to form some just for grins. Got a note from sinclair canceling my back order, no brass in sight was the cause.

I formed the cases with 9.0g of Bullseye with cream of wheat and tuft of blue paper towel stuffed in the end to keep powder from coming out.

I will start working on the 130g Berger next, along with doing a test to see how many shots I can get out of the same 3 cases.

Fun working with this little case for sure, makes me wonder how the 6.5/250 AI would perform...just for grins.

Seems 6.5x47L is just too popular in the USA. No shortage of cases down here in Oz. Still have 4 boxes unopened from the last order. Pity you are so far away and postage is so expensive.

One of the 6.5x47L firearms here is a Stolle Grizzly II Action, Pac-Nor NBRSA HV 29" 1:8 Twist 5 Groove Barrel, Jewell BR Trigger. Kelbly 1M Stock.

If you are going to play with 130gr Berger VLD Target Bullets I might make a suggestion that you might like to consider that came from one of our top Benchrest shooters and during the load development of this rifle shot a sub 0.1" 3 shot group at 200 yards with these. Since then for me still learning 0.25 MOA or less is the norm at 550 yards (500 Metres)...operator error being the equasion.

All prepared rounds were in new prep'd Lapua Cases, Berger 130gr VLD Target Bullets seated 0.002" off the lands, CCI BR4 Primer using ADI AR2208 (Varget) Powder. All testing was done very late in an afternoon with a light cross breeze. Distance was 180 metres (200 yards) approx. All rounds were measured prior and after firing at the neck, neck shoulder junction and base watching for expansion.

Start load was 36.4gr and increments of 0.2gr up to 37.8gr looking for the accuracy node in this lower segment. All 4 shot groups looking at the pattern of best placed three shots. At 37.4gr 3 shots measured 0.086" and with 37.6gr 3 shots measured 0.191" with no horizontal dispursion and slight vertical. The groups outside these loads were very apparent in size out to 0.500" but with a lot of horizontal. Average velocity 2,855fps

The load I have settled on is 36.5gr Varget and now with Fire Formed cases is giving a velocity of around 2,860fps with an ES = 8 , SD 2.5 which I think is pretty flash. The rifle has only shot 150 rounds. The last 50 rounds shot were with no cleaning and even after that shows very little fouling.

I am shooting on my own 500 metre range for practise before competition shooting begins in our 500m Fly. Just hope I can duplicate some 5 shot groups I have managed between 1 1/2" to 2 " and perhaps I can beat that with more experience. However, under competative conditions they are nearing record score groups so I might be dreaming.

EDIT.... Sorry, just went back in the posting and realise I said all this before.... maybe we are up side down here...... ;D

 

[AckleymanII]

Thanks for the help, Mega. I found some Lapua cases today, 200 on order.

Will try out Varget, again!

 

[majohnson]

I'm only a Creedmoor owner, however there was one point made about higher pressure loads. My 6.5 CM is the same way, starting loads are ok but loads closer to the max load group better. Is this something common in 6.5 rounds.