Swiss Load Data

[kaduflyer]

Was looking at Swiss load data  on there site it had a link to quick load on there for all Swiss powder I downloaded this file but can’t get it to open has anyone else tried this ? 

[TreeWorks]

You will need the QuickLoad software to open it.

[VarmLR]

If you need load data just send them an email with your cal, barrel length and twist rate, bullet details and powder you want to use.  They'll run QL for you and email you with the results.

I have a fair bit of data now worked up for .223, .308 and 6.5 calibres with RS50 and RS62.  If that might be any use to you (or anyone else) I am happy to provide what data I have with the proviso you start at min load and work up. 

[banus02]

good afternoon ,if you have any load data for the 6.5x55 20" and 308 using rs powder could you send me a pm please

[VarmLR]

PM'd

[mitch308]

Hi

I would be very interested in having a look at your data for the three calibers you list (i have 6.5x55SE and 6.5 CM as well as 308 and 223 ) i'm going to need to swap powders on all of them when i run out of my current stock of Varget and  H4350  and have decided to switch over to RS50 & RS62 

 

 

[eddieb]

Hi

Is the RS50 the nearest to Varget and RS62/H4350. Both of the Hodgon ones have been my go to powders for sometime.

I was thinking of going back to N140 but lots of folks are talking about the RS brand as being a bit superior.

[VarmLR]

RS50 is closer to N140, being re-branded TR140, but seems to exhibit a more linear velocity with charge rate closer to max pressures from my own testing, meaning that it doesn't suffer pressure spiking to anything like the same degree.

RS62 is closer in burn rate I think to H4350 and to Viht N150 (Hogdon heat of explosion being 3,760 kJ/kg and RS62 being 3750)

Varget AFAIK is a higher energy powder than RS50.

I have had excellent results from RS50 in .308 and RS62 seems pretty comparible in 6.5CM to H4350  in terms of suitability and accuracy, at least it has been with the bullets that I have tried it with (139 Scenar and 140 SST).  It's a little more expensive than Viht but delivers better results than N150 (at least in my rifles).

[VarmLR]

My apologies to the OP for the thread drift;  as a fair few have PM'd me asking for a summary of my load data, I've listed it below for information only.  Please do not attempt to load to what I have listed as maximum loads without starting low and working up, as per the norms.  Please also note that load data for SR/small flash hole brass will NOT be the same as for LR brass. Do not attempt to replicate SR brass loads using LR brass as you'll likely go over-pressure:

 

.308/RS50

24 inch barrel/1:11 TR/CCI200 Large rifle primers/Lapua brass;  4 times fired

175 TMK, COAL 2.800

Start load:     41.5gr

Max Load:    45gr (hot, sticky bolt, best avoided)

Accuracy nodes:  43.0gr/2600fps/0.219” group@100yds

                               43.8gr/2640fps/0.542” group@100yds

                                44.2gr/2666fps/0.36” group @100yds

                               44.6gr/2677fps/0.31” group@100yds

OCW data:  Pressure insensitive region: 43.8 to 44.2gr:  Low ES 16 (badly prepped brass hence higher than ideal)

6.5CM

24 inch barrel/1:8TR/Murom SR Magnum primers/Lapua SR Once fired brass

139 Scenar, COAL:  2.842 (0.030 to lands)

Start load:  41gr

Max load:  44.6gr (Compressed)

Accuracy node:  44gr/2630fps/ES16/0.25” group @ 100 yds ave (best @ 0.18”)

Please note:  DO NOT attempt to replicate these loads using Large Rifle primer brass.  These loads were developed using Small Rifle/small flash hole Lapua brass (Case capacity 52.5gr H20)