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Reload Swiss RS62: Actual V's QL for 6.5 Creedmoor

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Well I got out today for an hour and shot a few groups.  Working on my technique, (this is my first full bore target rifle).  The best two groups were both 44 gn, one virgin brass one once fired.  both are 10 shot groups, ES and SD were disappointing,

Virgin brass 44gn 
MIN 2693
MAX 2748
AVE 2715  
SD 14
ES 55


Once fired Brass 44 gn
MIN 2695
MAX 2738
AVE 2715
SD 12
ES 43

The Black stickers in the center are 10mm, the groups were shot at 100 Yds.

Pretty happy so far I'm off to the 600 Yd range on Saturday.  I'm Sure the ES will cause me some problems at that range.

Tom

group2.jpg

group1.jpg

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Good groups but you'll want to firm up ES/SD if stretching legs on distance.  Perhaps try different primers?  I had very reasonable results with Murom Magnum KVB-223M (avoid the standard ones...cup thickness is insufficient).  Remington 7.5s or BR4s also worth a shout.

Thinking a little more on it, you still don't have too many rounds down that new barrel.  My experience with my own TAC was that it took between 300 and 400 rounds before things started getting more consistent.  Also, are you batching your brass and what is your procedure for brass prep?

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Your spot on with the ES/SD.  Currently I haven't batched brass (I don't have an accurate digital scale and can't face weighing each one on a balance beam yet).

Brass is deprimed using Redding universal deprimer with small pin, wet tumbled in SS media, Annealed using a 'Reloader Brass annealer' Body resized to bump the shoulder 1 to 1.5 thou, Trimmed and chamfered with Lee quick trim ( currently only chamfering as cases are still below SAAMI max) Then Neck sized using Lee collet die (with turned down depriming pin). This give 2 thou of tension.  Bullets are seated with Redding Comp seating die to 30 off the lands. Charges are weighed on RCBS M500 scale. Primers are seated with Sinclair hand tool.

Tom

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Your regime sounds fine, although it might pay to check case capacities in case you have some that are throwing ES out;  I'd also be tempted to batch by OA case length. I try and keep mine all within the range 1.906 o 1.910 after FL sizing.  If you've done all of that and are confident that charges are accurate, then swapping out primers would seem the next logical step.

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I was thinking I may have to batch the brass, and I think I'll try the Murom KVB-223M primers if I can find any in this neck of the woods.  Anyone know of a stockist in the South West?

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#

thanks, but thats still a 5 hour round trip from where I am. and Hazardous delivery charges are extortionate 

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 In reply to the OP's original entry , I noted a big difference in velocity and pressure signs between my 1st and 2nd tubs of RS62 .

 The same charge weight in my 243 using 87grain Vmax saw a drop in average velocity of 187 fps using the second tub . ( Quite clearly not of the same batch , different containers and a year between purchase. ) This equated to 0.1 grains equalling 31 fps , the velocity confirmed by my chronograph appeared quite linear. I'm sure others must have noticed this !

 I'm not a QL user myself  , but is it possible that QL's data was based on the earlier production runs ?

 

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