i joined the darkside 6 arc build

[mel80]

everyone loves there 65 arms barrels infact the 12 inch grendel im putting together is also from sixfive ,and theres more then likley a 12" 6arc from sixfive in my near future

stuff shoots just as good as my wilson recon barrel at a fraction of the cost

[stagpanther]

Ordered it Saturday and just received notice it went out priority mail this morning--not too shabby. I also discovered I have all the components on hand to assemble the gun from scratch, so I can continue using the 350L as a paper weight and tire iron.

[mel80]

yup hes fast on the shipping , my 10 inch hg adj gb and carbine gas tube are siting at the post office for my 65 12 inch build , my next day off is wensday soill be taking that one to the range ,ill start a new thread and post up my results with that then

[mel80]

Originally Posted by stagpanther

Ordered it Saturday and just received notice it went out priority mail this morning--not too shabby. I also discovered I have all the components on hand to assemble the gun from scratch, so I can continue using the 350L as a paper weight and tire iron.

how about a teaser

[stagpanther]

Barrel just came in this morning, took me a while to get the various spare parts to cooperate with one another--some of them go back many years. Will post momentarily.

[mel80]

about to run a test with sierra #1515 80g spbt blitz and 2000-mr
5 groups of 3 starting at 30.6-31.4 coal of 2.160

[mel80]

[stagpanther]

That's some impressive shooting! I love 2000MR.
I had my first failure today, I loaded up some 66gr Bart's flat base match bullets, but could not get them to cycle from the magazine without jamming on the chamber wall (COL 1.15). Straight hand-feed was OK.

[mel80]

Originally Posted by stagpanther

That's some impressive shooting! I love 2000MR.
I had my first failure today, I loaded up some 66gr Bart's flat base match bullets, but could not get them to cycle from the magazine without jamming on the chamber wall (COL 1.15). Straight hand-feed was OK.

ty,thats with the atn 4k pro 5-20x on the gun going back out tommorow as well to see if i cant tighten that group up a lil going toload some .1 above and below that charge wieght and also play with seating depths

just had 4 lbs of 2000-mr delivered today

[stagpanther]

My modified case guage came in today--apparently I was seating way beyond where the ogive engages the lands--so my bad.

[mel80]

i just picked up a few boxes of speer 6mm 75g hp's

[stagpanther]

I don't think small flat base bullets with a short COL will do very well in the ARC anyway--but maybe a change in seating depth will make a difference.

[mel80]

i havent shot anything but lightwieghts yet granted the noslers have a very slight bt and the 80g has a larger one , ive had reallygood luck with light flat base bullets in the gren so we will see , i alreayd had a box of sierra 75g hp's flat base i picked up loacally im loading a few of those now , was waiting till i finished my 80g 2000-mr testing first since theresno load data for 70/75g and 200-mr , i prolly wont get the arc back out till this sunday though , im heading out soon but im taking the shorty gren out to play

[stagpanther]

The main problem as I see it isn't the actual performance of the bullet in the bore--but the difficulty in maintaining concentricity when being gas-cycled from a magazine. The best group I ever shot was using a flat base bullet, so I know within limited ranges they can be very consistent.

[mel80]

just loaded up a ladder for 75g sierra flat base hp's
6 groups of 3 starting at 31.2-32.2g of 2000-mr in .2g increments

no published load data for 75g and 2000mr but looking at 80+ g data i know max is 31.5 @ 80g
and 30.6g at 90g bullet
and 30.3 at 95g bullet

so safe to assume max with 75g is right around 32g

im going to shoot theese after work tommorow since i open i get out early in the day

if this works well im going to try loading my 70g nosler balistic tips with the 2000-mr as well , though i have a 1 hole load for them with ppv already

[mel80]

forgot to add coal is 2.110 and im touching the lands

[stagpanther]

I found that I need to bump the shoulder back a bit--not unusual for the Grendel--after the first firing of the ARC resized from Grendel.

[mel80]

Originally Posted by stagpanther

I found that I need to bump the shoulder back a bit--not unusual for the Grendel--after the first firing of the ARC resized from Grendel.

odd i havent had to do that with any of mine , though i did have to size mine 2 times when converting from grendel to arc

the first pass threw the die wouldnt move the shoulder back , until after i trimed the brass back a lil bit , then run it hard into the arc die hard the second time with a final trim to size after that

i also converted a few geco x39 cases i had originally converted to grendel down to arc so far no issues with it either

im going to hit the range again tommrorw and test out those sierra 75g hp's and see how those do

ive got 2x monster 6mmarc 12" inch barrels inbound that ill be building here soon

[mel80]

really nice warm day today but by the time i got out of work wind was 30-35mph so i said screw the range , hopefully tommorow will be a better day since its my day off, i also havent shot my ar-10 creed build in a long time so i wanna drag that out got some loads with 6.5 staball i wanna try out.

speaking of the staball , if i can get my hands on some 115g rdfs for the arc im prolly going to try loading those with the staball load data says 2600 fps with those and staball, should work well with the 110 a-tips too

[stagpanther]

Sounds interesting--I have lots of staball and have had great results with it on larger cartridges. It is quite temperature stable and seems to have a bit more velocity than similar powders. I also have gobs of eld's--Midway had them in bulk for really cheap about a year ago.

[mel80]

Originally Posted by stagpanther

Sounds interesting--I have lots of staball and have had great results with it on larger cartridges. It is quite temperature stable and seems to have a bit more velocity than similar powders. I also have gobs of eld's--Midway had them in bulk for really cheap about a year ago.

when i saw the way things were going and rl-16 and rl-17 was starting to get hard to get my lgs got a huge shipment of staball in i ended up buying a total of 28 pounds of it u know just incase , so yeah ive got a ton of it

[mel80]

my 75's arrived today theese look like they might be nasty on some critters

[mel80]

my new speer 75g hp's nexto the sieraa75 hps i already had

[mel80]

so i grabbed my newest tripod just tolearn at the range is has a 3/8's stud and not 1/4 stud damn chrono takes a 1/4 stud so no chrono data , but heres this rifle nailing steel at 400y off the tripod

video here
https://www.youtube.com/watch?v=gyAe0pue7-0

[Brian Pfleuger]

That's either a HUGE gun or one tiny bench.