6mm dasher, bart 105's rl 15, rl15.5 imr4895

[6bra1k]

ok SO FOR 1000 YARD BENCHREST SHOOTERS
the question is: where would you start? brand new 6mm dasher, barts 105, lapua ff cases, 205/205m/ cci450/ br4 primers, rl15, rl15.5 and imr4895. i have a dasher, so not new to me...but what ladder would you shoot first ??( not groups, just a node/velocity search at 200/300)

 

[urbanrifleman]

R15.5 and never change.

 

[6bra1k]

SO while listening to a few comments, i shoot 15 currently. won 600 yd national lg score with it. varget never worked for me. there is a comment floating around in cyberspace that 15.5 is their answer to varget...i wanted to try it and it is where i started. more to follow

 

[6bra1k]

so some starting points
barts 105 hammers at 2.43x this is TOUCH in my rifle
cci 450, lapua brass and rl15.5. alliant has NO DATA FOR THIS POWDER IN A DASHER. reading some posts i got a "feel" for a starting point.
i did a 15 count ladder in 0.2 steps from 31.4 to 34.2. i got 2842 to 3053 fps. there are 9 shots in the diag hole in the pic...at 200 yards. case not full, no bolt lift issues. aprox .4" for a 1.8 gr spread

 

[WIB3]

4895, tried and true. I shoot a Dasher at 32.0gr

 

[WIB3]

15.5 is positively awesome for a 6.5/47. Truest a game changer. Not so much for the Dasher.

 

[Tom Murtiff]

15.5 in dasher ...used 34.0 in relay and 33.9 in shoot off. 1st and 1st ..

 

[6bra1k]

so i took my 15 shot ladder data, and plotted velocity vs shot number.
it showed several small steps that maybe nodes. i loaded up 3 each of the top four steps. will shoot at 200 , wind permitting and see what shakes out. the best get reshot as groups of 5, then seating depth, and then...
(tom..my top load this time is 33.9)

 

[lawman29]

15.5 in dasher ...used 34.0 in relay and 33.9 in shoot off. 1st and 1st ..

What primer & bullet?

 

[Mulligan]

so some starting points
barts 105 hammers at 2.43x this is TOUCH in my rifle
cci 450, lapua brass and rl15.5. alliant has NO DATA FOR THIS POWDER IN A DASHER. reading some posts i got a "feel" for a starting point.
i did a 15 count ladder in 0.2 steps from 31.4 to 34.2. i got 2842 to 3053 fps. there are 9 shots in the diag hole in the pic...at 200 yards. case not full, no bolt lift issues. aprox .4" for a 1.8 gr spread

New Alliant Reloder TS 15.5 Powder — Outstanding Test Results « Daily Bulletin

Outstanding New Powder from Alliant -- Reloder TS 15.5 New Product Review by DasherDude Alliant has devloped a new temperature-stable powder for long range applications.

bulletin.accurateshooter.com

not sure if you had seen this or not. Just sharing.

CW

 

[Tom Murtiff]

I shot a friends rifle. TESTING FOR HIM br-4 , 103 hunter bullets, 15.5 33.8 33.9 34.0 34.1 no pressure.

 

[6bra1k]

so to make life better, brownells has/had rl15.5 in 8 lb'ers this am. it was not cheap($400 to my door) but i am pretty much set for a while

 

[Kracken McGraw]

15.5 is positively awesome for a 6.5/47. Truest a game changer. Not so much for the Dasher.

Any thoughts on the 15.5 in the 6-6.5/47?
I like Reloder 16 in it with the 107’s.

 

[Kracken McGraw]

I wonder how close my IMR 4451 is to the 15.5?

 

[WIB3]

I shot a friends rifle. TESTING FOR HIM br-4 , 103 hunter bullets, 15.5 33.8 33.9 34.0 34.1 no pressure.

Velocities?

 

[WIB3]

Bought an 8lb jug on Friday. Paid 299.00 plus tax. Tested yesterday and today. I found that it is very similar to Varget. Individual grains of powder are larger and difficult to dial in on wanted charge weight. Velocities were higher for set given charge, compared to Varget. With the bullets I was working with the harder I pushed them the larger the group got. My best groups were at 33.70. I than shot H-4895 and found no advantage in my case other than filling more of the case. On the down side it’s dirty. Takes more patches down the barrel. Again to clarify, testing done on a 6Dasher.

 

[1bamashooter]

I saw brownells had it but I still haven't had a chance to test it in my Dasher yet. I'll probably regret not grabbing a jug or two

 

[Mulligan]

I saw brownells had it but I still haven't had a chance to test it in my Dasher yet. I'll probably regret not grabbing a jug or two

it will shoot in a dasher, sort of fun really


CW

 

[6bra1k]

so i shot 4 three shot groups yesterday. nothing outstanding. very mild right left breeze. mainly 2 and 1's. will reshoot 3 of them as 5 shot groups...probably tomorrow. brownell just shipped my 8 lbr of 15.5. and getting a seb max se soon...life is good

 

[6bra1k]

so thursday i shot 20 rounds, 5 sighters, still playing with the zero stop on the scope. nothing exciting at 200 with a very mild right left breeze that again change to quartering for the last group. gonna pick one( they are all close) and do a seating depth test on sat.