The sooper dooper pig 300wsm project thread

[wsm junkie]

@dannyb looks good. Have you got a picture of the paint can?

[dannyb]

@dannyb looks good. Have you got a picture of the paint can?

[Gibo]

So is it black paint with spiderman strings in it? Might do some lures with it

[dannyb]

So is it black paint with spiderman strings in it? Might do some lures with it

Nope it's literally just white stringy paint, it also comes in black if that helps

[Gibo]

Nice. What's the height profile on it? Like does it sit flat or is it raised?

[dannyb]

Nice. What's the height profile on it? Like does it sit flat or is it raised?

Very slightly textured finish, if you were down here you could just borrow my tin and see if you liked it

[Gibo]

Nah all good man, might get a white and black to f with

[dannyb]

Nah all good man, might get a white and black to f with

It's pretty cheap bout $20-$30ish per tin from memory

[dannyb]

Yay brass finally arrived today, so set about prepping the brass and getting an initial charge weight ladder loaded.
All seated at max mag length (2.440" ogive length) starting mid range and finishing .5gn above book max.....may even go hotter we'll see how it goes and if i hit pressure.
Ideally I'd like to hit 2700fps but it's a bit of an unkown how much velocity chopping the barrel then fitting a suppressor will effect things.
All i need now is for the rain to piss off

[dannyb]

Well I could just show you 1 pic and say job done.......but I would be a big fat liar
Charge ladder shot today and to be fair after going through the data I'm not really any further ahead.....
So I did shoot a smashing .5" 3 shot group at book max with an avg velocity 2738fps with an ES of 5fps which is quite impressive out of a 19" barrel.....but.....
Through out the whole ladder I was getting weird pressure spikes, heavy bolt, then next charge higher no heavy bolt, ejecter stamp and swipe then same again next charge higher nothing....
A little confusing to be fair. Of most concern was that the brass from my higher charge weights has become difficult to fit in the case holder insert on my press and is likely trashed or at minimum has a shortened life span.
I had seated my rounds out to max mag length thinking with the meaty 200eldx pills I would need the case capacity and I wonder if the big pills are creating more pressure being closer to the lands ?
I have loaded up a new charge ladder that mimics the factory precision hunter ammo for COAL and will see what that does and abandon shooting if I get any pressure signs.
Brass is way to spendy to trash it in a couple firings
If I can't get the results I'm looking for with eldx I have ordered a box of Targex 190gn pills to try next.
Of note the rifle is an absolute pussy cat to shoot and definitely not in any way shape or form the recoil flinch inducing mule I was a little worried it might turn out to be, in fact I would go as far as to say it's got less recoil than the 270wsm barrel had.
Anyway not all bad and not all good further work to do
Back to the range tomorrow.

[Tahr]

Nice group. What make is your brass?

[dannyb]

Nice group. What make is your brass?

Norma, unfortunately the load that shot that group would likely destroy the brass in 2 or 3 firings I reckon. That was 2730fps avg with an es of 5fps but massive pressure signs....well sort of actually this load didn't create heavy bolt lift but the one below and above it did which is bizarre. But of most concern is that the base of the case, seems to have deformed in some way (not visible to the naked eye) as the cases from about 61.5gn up all seem to be like this and get worse the hotter the load.
What is incredible is the velocity I got at book max was only 60fps slower than book max predicted and there data is based on a 24" barrel.
Will be interesting to see what the saami spec ladder produces

[Ryan_Songhurst]

Id be looking at headspace if its inconsistent pressure

[dannyb]

Id be looking at headspace if its inconsistent pressure

What do you mean ? In what way ? Barrel was fitted by a gunsmith and checked with go/no go gauges

[Ryan_Songhurst]

What do you mean ? In what way ? Barrel was fitted by a gunsmith and checked with go/no go gauges

So was a couple of the rifles I've had built/rebarrelled. Some Smith's would like you to think they are god but they are humans too at the end of the day..