Thread: How crucial is the crown?

Would this slight corrosion affect accuracy? When new (10 years ago) this rifle was about half MOA. The best I can get with it is just shy of 1.5 MOA. This will still (and has) knock down anything within 200m, but I am concerned anything past that will have more chance to miss vitals, and so I’m reluctant to push past that.
What are your thoughts?

@gundoc probably the best guy to ask.

If it was mine I would look at getting it recrowned, or doing it myself using a marble/ball bearing and some valve grinding paste or similar.

What is the inside of it like?
Is the decrease in accuraccy with the same load?

Originally Posted by veitnamcam

What is the inside of it like?
Is the decrease in accuraccy with the same load?

Looks fine to the eye, but I’ll try get some magnification onto it. The original group was from the gun builder before it left the factory in the states. I assume with handloads. I’m only shooting factory, so that will likely make some difference too

Originally Posted by CamFlatt

Looks fine to the eye, but I’ll try get some magnification onto it. The original group was from the gun builder before it left the factory in the states. I assume with handloads. I’m only shooting factory, so that will likely make some difference too

Ah I see.
A good clean out as Gundoc suggested and perhahps try a few differnt brands and loads of ammo, it may just not like the one you happen to be using.

Suppressor left on after shooting it??

Originally Posted by Tentman

Suppressor left on after shooting it??

Yep that’s right, previous owner

nah its buggered.
Give you 20 bucks and a pie for it.

Originally Posted by csmiffy

nah its buggered.
Give you 20 bucks and a pie for it.

What kind of pie? Might be a deal breaker..

That would have to be negotiated. Not everyone likes the same pies. Whilst I am partial to steak/ kidney and steak /mushroom I am aware than not everyone else has such refined tastes. As for brands, sheffields pies are good, Pie bin out Rangoon aren't too shabby either. I haven't had enough decent fresh jimmys pies to comment nor Fairlie pies which are meant to be awesome.
There was a pie shop between Hamilton and Tauranga that did as good a pie as I've ever had but only been there once.
I digress-back to rifle stuff

Crown looks fine to me as far as I can tell from the pic. Unless it wasnt cut true from manufacture I doubt it is the problem.
For crown to be faulty or damaged it has to provide uneven gas. You will generally have a lot worse accuracy than 1.5" as well


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Originally Posted by R93

Crown looks fine to me as far as I can tell from the pic. Unless it wasnt cut true from manufacture I doubt it is the problem.
For crown to be faulty or damaged it has to provide uneven gas. You will generally have a lot worse accuracy than 1.5" as well


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Is that like lifting one cheek?

Originally Posted by Gibo

Is that like lifting one cheek?

Probably. Have you got a thermal camera?

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Originally Posted by Gibo

Is that like lifting one cheek?

Exactly like lifting one cheek Gibo. It’s what the Germans call Ein Sneekenfarten.

Originally Posted by Rushy

Exactly like lifting one cheek Gibo. It’s what the Germans call Ein Sneekenfarten.

I tried that during chapel at boarding school. During a lull in the sermon, fittingly. A loud "PAAAAAAAAAAAAAAAARP" resonated from the wooden pew. Bursting into laughter (as were everyone else), I tried to muffle my laughter only to pump out and additional"paap paap paap" with each fit of laughter, which just added to the hilarity.

I got kicked out.