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New topic. ignition and timing.

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BigStick
BigStick's picture
.

That's a beautiful piece of wood.
Kim

Bill Collaros
2500X FOR SALE

https://www.facebook.com/groups/375176899328058/?multi_permalinks=864916..., then i might buy a Falcon off you Kim to create a new Sporter Smile

Bill Collaros
Sydney - Australia
"Shoot to Thrill"

BigStick
BigStick's picture
.

I got the front page but can't see anything for sale.
Kim

Bill Collaros
Ok

Might be one of those pages you need to join to see the content ?

Bill Collaros
Sydney - Australia
"Shoot to Thrill"

TheJet
TheJet's picture
Kenny sent me this as the pictures

Kenny Sent me this as the pictures are down on the thread that he put up in the thread Mick posted hope it helps

First, as you know the internals were crap. I polished the inside of the bolt and then treated it with something we call “Microslic”. Doesn’t really need any lube, and makes the surface very slick.

Here’s a pic of the inside of the bolt showing the coated area.

https://flic.kr/p/F2gkE1

The area that the punch is pointing to is the area that the firing pin body had flared out as it was smashing into that pin stop area. I had to file that flat both on the side facing the camera, and also, the actual pin stop side. Once I trued that up, I then trued up the body of the striker carrier to where it would mate perfectly should it contact the pin stop.

https://flic.kr/p/DvcboR

I also had an issue with the cocking lug mating with the bottom of the ramp. This was keeping the striker from moving all the way forward with each shot. You can see there is no gap in this picture:

https://flic.kr/p/225hLs3

I had to hone out the depth of the cocking lug ramp to allow some “Play”. In this picture, you see a gap around that rear “shroud”.
https://flic.kr/p/F2gvML

Doing all of this allowed the striker to protrude more, which was good. When it was made, they tapered the wrong side of the tip so it’s beveled on the side that is inside the shell casing, not the edge of the shell as it should be. Also, it was shaped to a very sharp point. With it moved forward after my mods, I was able to “blunt” the end somewhat to give a much bigger footprint on the shell. It’s still not correct, but does pretty well for me.

https://flic.kr/p/225hJfs

Here’s what it looks like now.
https://flic.kr/p/F2gsR5

Someday will replace the striker tip. But for now I’m playing with Ms Kinky so I’m up to my ears with that.

Oh, first target I ever shot in a match with the Falcon after the mods:
https://flic.kr/p/ToQz1g

Here’s a target I shot the other day testing some ammo:
https://flic.kr/p/239UndF

Here’s a PSL target I had a go at
https://flic.kr/p/YipBx3

Had a dropper and a flipper but other than that, the other two misses were me.

And of course, you’ve seen this in person…
https://flic.kr/p/ToW8dT

Team KAOS
All the gear and no idea

BigStick
BigStick's picture
OK

Serious now. I want a 2500x action new or used. Not for me.
Can anyone get in touch with Sedo's guns to see if he has one.
It is for a light hunter /BR (8 1/2 lb) in the new rules. And I might do a deal for two actions only.
Kim

Bill Collaros
It is still there Kim just

It is still there Kim just apply to join the page mate made by Dave Kerr in a Laminated Jag Stock whatever that is, Jewell Trigger Lilja Barell $5000

Bill Collaros
Sydney - Australia
"Shoot to Thrill"

BigStick
BigStick's picture
Thanks Bill

I did apply to join the page and it's pending but I'm impatient.
Forget the last post, my mate got onto Sedo and ordered two 2500x actions.
ONE for me . weeeeeeeeee. Like a kid in a toy shop.
Kim

Fergus
JAG stocks are made by

JAG stocks are made by Victorian BR shooter Geoff Wells. Geoff does good work. He doesnt have a web page, but you can see his stuff at: https://www.facebook.com/JAG-Precision-Rifle-Stocks-895051987252115/

Bill Collaros
Thanks Fergus

Had a look his work looks great, maybe The Mexicans or the Dark Side have kept this secret for too long Wink

Bill Collaros
Sydney - Australia
"Shoot to Thrill"

TheJet
TheJet's picture
Falcon Ignition

Did Peters ignition test on both my Falcons today One Falcon was getting 0.021 case indent in my heavy Falcon nine out of ten times on once used eley brass
the other international sporter rifle was 0.022 seven out of ten times pretty consistent considering the other imprints were only one thousandth of an inch more on both rifles looks pretty good consistent ignition
Also found that I had two Lapua cases in the sporter results so probably have to re do that test

The turbo shot 0.016 for all ten test shots so also on the money though not the depth that Bill Calfee says to chase 0.022 it is really consistent

Image: 

Team KAOS
All the gear and no idea

22 tech
22 tech's picture
Have you cut the cases in

Have you cut the cases in half to see if the rim was just getting closed up? If so could you tell a difference between the 3 rifles by eye.

Peter

TheJet
TheJet's picture
Peter

Hadn't really thought to do that I will see if I get a chance today

Team KAOS
All the gear and no idea

22 tech
22 tech's picture
Anschutz 54 1807 test

Ran the test on an Anschutz 54 1807 I've had for 4 days after giving the internals a clean up. Before it felt almost gritty.
once fired SK standard
0.0161
0.0161
0.0165
0.0169
0.0169
0.0173
0.0173
0.0173
0.0177
0.0181
Should have tested it before to see if it made much difference.
The rim looks to be closed up though i think it could do with a bit more angle on the pin & hit more inboard.
The strike may get a little deeper if this is done cause it won't strike the outer rim so much. There is plenty of room untill it hits the stop.
Was interesting to see the insides of the 54 & if anyones interested i will share my thoughts.
Peter

Image: 
22 tech
22 tech's picture
Hits

Firing pin hits 54 1807
These were with the firing pin spring pretensioner wound to max.

Image: 
BigStick
BigStick's picture
Strike

The strike seems to be quite deep and as you say if it wasn't over the rim it would be even better.
But are we chasing something that isn't there?
Calfee said the first 95% is easy and then there's the rest.
Kim

TheJet
TheJet's picture
This is terrific

How do you cut the shells so neatly Peter?
Certainly looks like it is closed up to me, but funny how it increased hit as you did test
Did you oil bolt before testing and maybe the got into the internals as you did the test and freed the firing pin up a bit ??
I think everyone would love to here your thoughts on the 54 action as it is such a smooth and greatly used action.

Team KAOS
All the gear and no idea

22 tech
22 tech's picture
54 ignition

The hits were random i just sorted the data so it was easier to read. The cases were cut with a dremel then sanded flat & the small bur picked out carefully.
The 54 bolt was interesting. If i'm correct the pin tang looks to be guided (clocked) by the bolt body only. It has a shroud of sorts that is also guided by the bolt body but this doesn't contact the firing pin tang. The shroud seems to be loose & i don't know what purpose it serves except as a dust cover? Firing pin spring is short and thin guage wire so tends to drag on the inside of the bolt untill you put the spring pretensioner on which keeps it straighter. The clearance between bolt body & spring seems tight to constrain the bendy spring?
The bolt handle lug collar has wear marks only on half of its circumference where it contacts the shoulder on the bolt, but i don't have the ability to fix that. I haven't checked out the pin contact with the trigger yet.
Peter

Image: 
22 tech
22 tech's picture
54 1807

Bolt collar wear / mating surface.

Image: 
22 tech
22 tech's picture
54 1807

Bolt lug wear / mating surface.

Image: 
TheJet
TheJet's picture
Wear marks

Looks like both lugs are locking up ok is the wear only on the other side because that is the way the force would go when lugs lock in?

Team KAOS
All the gear and no idea

22 tech
22 tech's picture
"is the wear only on the

"is the wear only on the other side because that is the way the force would go when lugs lock in?"

Yea i don't know if that is the case but the lug contact could be better. Was hard to get a decent picture of it.
As Kim said it's probably in that last 5% anyway so not the first thing to tinker with.
Peter

BigStick
BigStick's picture
Contact

If there wasn't blue on the part you wouldn't notice it. The only way I know to get 100% contact is leaping and I'm not comfortable with that. If you wear somthing away(lap) then you are increasing tolerances.
Kim

Dig
Dig's picture
Skinny

So how skinny will the posts get if we reply to replies. And at the risk of being perdantic, the tolerances will remain the same but the clearance will increase.

Team KAOS - Lurking with intent
All the gear and "a bit more of an" idea

BigStick
BigStick's picture
Lets

Let's see
Kim

BigStick
BigStick's picture
Tolerance

Tolerance and clearance. Who's being pedantic?
Kim

Dig
Dig's picture
.

Touche

Team KAOS - Lurking with intent
All the gear and "a bit more of an" idea

BigStick
BigStick's picture
Well

Often the terms allowance and tolerance are used inaccurately and are improperly interchanged in engineering contexts. This is logical because both words generally can relate to the abstract concept of permission — that is, of a limit on what is acceptable. However, in engineering, separate meanings are enforced, as explained below.

A tolerance is the limit of acceptable unintended deviation from a nominal or theoretical dimension. Therefore, a pair of tolerances, upper and lower, defines a range within which an actual dimension may fall while still being acceptable.

In contrast, an allowance is a planned deviation from the nominal or theoretical dimension.

22 tech
22 tech's picture
Bowl, Plate

So if the tolerance was more precise this would allow the allowance to be more accurate?
Peter

BigStick
BigStick's picture
I just have to do it

I have to do it because curiosity has the better of me.
How skinny will the column go?
Nothing to do with Rimfire accuracy, but forum skinniness.
Kim

TheJet
TheJet's picture
Kim you did good mate

Kim I thought that there was a lot still to talk about in ignition but seems we are still talking about it but just changed the thread because of skinniness
Cause I don't really know much about skinniness as I am a bit to fond of eating bacon and eggs
Just sayin

Team KAOS
All the gear and no idea

BigStick
BigStick's picture
Ben

I really meant the width of the column. I'm not sure how narrow it will go. I haven't seen it like this before. There is still a ways to go on this topic.
Kim

Bill Collaros
Rob Carnell - What's Doing ?

I have not been this slim in 30 years and Kim will have to re-brand soon to "Toothpick" Smile

Bill Collaros
Sydney - Australia
"Shoot to Thrill"

Bill Collaros
So much for the 2018 diet

My reply is back to being FAT

Bill Collaros
Sydney - Australia
"Shoot to Thrill"

BigStick
BigStick's picture
Well that's blown it

Oh well.
Kim

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