Scooby-93

Thermal shorts 

40 minutes ago, Ronin said:

It’s 26 Bartlein 7 twist 

My reason for using lower powder charge is to enable use in all Uk conditions - didnt want it too warm in our sunny climate 😂

 

😂 very true! From 22degree 2 days ago to 6 today

It was worked up to 46 grain before experiencing pressure that was just shy of 3000fps I run 28” barrel. That’s been the key to my high velocity I would think.

it

certainly sounds it Andy, how long a barrel are you running?

1 hour ago, Ronin said:

Accuracy / VO was not as good with 160:165 when I tested earlier in the year 

 

I don’t have any 62 to try 

I’m aware that 60 may prove to be a barrel killer but the barrel is likely to have a hard life anyway it’s semantics - if (when CV19 restrictions allow) we return to competitive shooting it will be fine for 12 months competition and replace . (If it’s as hard as that ) 

Are you using improved case too ?

That’s interesting to hear, it will be good to find out how the barrel copes with the rs60 especially in competition use etc. 
 

no it’s a 6.5CM in SRP brass 44.7gr 

Steve, 

I would buy BRAND NEW brass and start again. 
 

As Dave has said it does sound like your reloading method.

with brand new cases run them through your correctly set up FL die ONLY to neck them down. 
 

Without seating bullets etc run them Through the chamber. If all is good load a couple up fire them off and see how your extraction is.

if extraction is hard, measure your headspace with the primer removed on the fired case and then correctly set your die up to bump the shoulder back 1-2 thou, then cycle through the chamber to make sure they chamber and extract easily.

if they don’t and you end up bumping the shoulder back say 5thou then it’s not the shoulder that’s the issue it’s most likely the body or web of the case.

try dropping your charge weight 10% and work back up but keeping within easy extraction 

20cal 

41gr case capacity 

36.6gr of N550 

39gr bullet

26” barrel

1.902 case Length 

first time I used it predicted 4206fps at 52595psi - very close to my findings with the chrono 

I tried again last night with the exact same data input and got 

4378fps for 59708psi 

it did predict the load density at 95% both times but all other results were different 

15 hours ago, Ronin said:

Relatively mild charge of  RS 60 bobbing along circa 2900 FPS Es v low 

Very efficient case when improved 

 

 

Is there a reason you chose to run that powder over the likes of RS62 or even N160 / n165? 
 

I get very similar speed to you using N160 with 147eld 

Hi Geoffrey,

I have Inputted exactly the same info on 2 separate days and had 2 Considerably different results. Have you updated something in the last few days?

its with viht n550
 

the first result was pretty much bang on for velocity and expected pressure for my current load, it matched very accurately to the software, however tonight it’s way off 

What charge did you settle on Andy?

Bump 

Bump 

I know of x2 24” 22 creedmoors shooting 75gr bullets at 3500.

personally I would go 8 twist And shoot the 85.5berger or 90atip

1 hour ago, phoenix said:

I have a Form riflestocks stock  for a Weihrauch HW60J, that has broken at the grip.

The stock has both  cheek raiser and  length adjusters.

Both of these are in perfect working order and could be removed and fitted to another stock

How did you manage to break the stock? 
 

All still available 

Still for sale 

Sold pending payment 

Case trimmer No longer required, trimmed between 100-200 22cal cases only. 

includes box etc 

As new only used to size 100 new cases

.245 

.240

.230 

£15 each + postage

As new I have only sized 100 new cases with it.

£65 posted 

7 minutes ago, Ronin said:

Bottom is T3x

 

Top 595/695/T3

newer unit has newt identical geometry but cheaper internals I’ll bet

 

the sear on the older trigger is slightly different angle too looking at the image 

Thanks for clearing that up, does the older trigger look like it’s had some work done on the sear?

The trigger marked Finland on the side... is that a tikka 595 trigger?

7 hours ago, Andrew said:

Different machining. Different sear geometry.  Think of it: Two identical rifles from the same factory. Trigger groups machined on this same machinery before installation. Different trigger pulls.  You wouldn't expect changing the spring would change this, right?.~Andrew

hi andrew, yes that is true but it’s totally night and day difference. 
 

I would estimate the t3x trigger pull is around 2.5lb maybe more

I have a t3 and a t3x, they both have light weight trigger springs fitted, the t3 has a very light pull weight, I’m guess 1lb maybe less.
It’s a lot Lighter than the t3x with light Weight spring fitted. 

if I remove the spring from the t3 and put it in my t3x it is still not as light as it would be in the t3.

how can the exact spring be different in 2 different rifles? 
 

the trigger unit in the t3 has Finland wrote on the side and the t3x trigger has toy08 on the side and is slightly different?

can anyone help me out on this issue as the Trigger in the t3x atm is far to heavy. 

12 minutes ago, baldie said:

Nope, standard chamber and throat.

Its a fast barrel [as most Sassen's are} small diameter firing pin, allied to the SRP brass, and a good stout action.

The same load runs perfectly well in my friends tikka, which I fitted and chambered with the same reamer.

We are cleaning up with this load in the military F class at Diggle.

Its not a stupid load, but I only tend to use Vhits data as a guideline, I've developed enough cartridges to find my way carefully, which is why I'm not going to publish the charge chaps, its safe in the guns i've tested it in, it may not be in other peoples .

By far, the fastest, most accurate load I've used in a creedmoor, and i've been building the cartridge about 15 years.

Wish I had shares in it !😂

Dave, have you noticed much difference in small/large firing pins with loads which rounds utilise SRP? 
 

with my load I’m using large rifle pin in Lapua SRP brass, the primer is cratered due to the pin, would a small pin do away with the cratering or would the full load need to be redeveloped etc?

Lapua SRP