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Reloading v max


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Common practice (but not law) is .020" off the rifling. A dummy round is loaded and bullet seated to just allow the bolt to close. Now adjust the die to give .020" or so more bullet seating.

Now check the round fits the magazine.

Now make a note of the length.

 

I am not sure if your reloader has an adjustable bullet seating depth! If it does quarter a turn should suffice. If it does not and the long v-max is seating to deep it may increase pressures slightly but rarely will it be dangerous.

If it shots good with it seated deep what is the problem :good:

 

ATB.

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There is a debate about whether the bullet should just seat on the rifling so that there is no pressure spike just a steady acceleration.

When not actually touching the bore the bullet accelerates freely then hits the rifling and holds up slightly whilst the pressure spikes and the bullet resumes its transit.

I was lucky, the guy I bought the rifle off gave me an OAL for the bullet and an ogive to check with, so my OAL is slightly longer, allowing the bullet to just seat in the rifling.

Makes it a little more accurate I am told. The OAL quoted in reloading manuals does not allow for your guns individual characteistics. An ogive is a very useful tool if you have the correct OAL measured.

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The trouble with touching the rifling is that a situation can arise that a bullet could get stuck!

Not to bad at the range but a pain in the field.

 

The other aspect is that some powders need that spike you mention to kick in so to speak!

 

Lots of folk think the word spike is a bad word in the shooting world. All graphs of pressure and time from barrels will show some spike or peak.

Atb .

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I have a mitotyo? very uesful and you simply attach the ogive to one end of the caliper, zero it and you are off.

I have not yet lost a bullet in the barrel and, you can always crimp. - I dont personally.

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As you're currently using a Lee Classic Loader, I think buying very costly calipers/Vernier gauge isn't the way to go. imo.

Very few people will get the true benefit of a set of mitotyo calipers. And at well over £100 a set, you would be better off buying a press, and some competition dies and a decent ogive comparator. I have a Hornady set and they're not that good. You're better of with a set from "Shooting Shed", in the link below -

http://shootingshed.co.uk/oscom/product_info.php?cPath=38&products_id=84

Don't get me wrong, if you're into 1000 yard bench rest shooting then you'll get the benefit from the mitotyo calipers.

At this point, I'd avoid buying a shooting brand named set of calipers too, as you will just pay for the name.

I went to a motor engineering shop and spent £20 on a set of "Clarke" calipers, and they're just the job. Accurate and consistent. They're in the link below.

http://www.tool-net.co.uk/p-349735/clarke-cm145.html?gclid=CIeQ1_f0y74CFSEcwwodYLwAFA

Just my pence worth....

Jamie

Edited by jam1e
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Cheers Jamie ya I just got a set of calipers for 18 quid out of my local builders merchants they will do the job I'm sure the lee classic will do me fine for now as I'm using rounds for fox deer not much target really so won't to need to load many rounds at a time thanks for all the info guys will get a few pics up when it's christened :) :)

Cheers Jamie ya I just got a set of calipers for 18 quid out of my local builders merchants they will do the job I'm sure the lee classic will do me fine for now as I'm using rounds for fox deer not much target really so won't to need to load many rounds at a time thanks for all the info guys will get a few pics up when it's christened :) :)

Edited by pigeon mad
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Cheers Jamie ya I just got a set of calipers for 18 quid out of my local builders merchants they will do the job I'm sure the lee classic will do me fine for now as I'm using rounds for fox deer not much target really so won't to need to load many rounds at a time thanks for all the info guys will get a few pics up when it's christened :) :)

Cheers Jamie ya I just got a set of calipers for 18 quid out of my local builders merchants they will do the job I'm sure the lee classic will do me fine for now as I'm using rounds for fox deer not much target really so won't to need to load many rounds at a time thanks for all the info guys will get a few pics up when it's christened :) :)

That's a serious stutter you got there pm! Only jesting, happy shooting! :good:

Jamie

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Another tip that is relevent is you are talking metric :yes: And there are not many folk that talk in mm or fractions of, 99% of folk mention fractions or thou of this, example in post #2

Some body i know got mixed up and started in imperial and moved over to metric, just stick to imperial :good:

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funny thing is people knock the lee loaders but the bullet seater produces less variation than a lot of seater dies in a press!!!

 

don't be sucked it to thinking closer to the lands is better in all situations

 

I have three rifles that group like a shotgun if not loaded with a considerable jump to the lands

When starting a load common practice is to load the bullet at least a calibre depth ON THE BEARING SURFACE.

now with some bullets and cartridges this combination is not possible (try loading a 39mm long 208gr 300wm round by only 7.62mm!)

 

shoot what works IN YOUR RIFLE not what works in other peoples

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