Short Siberia Load Development Questions...

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All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
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TattooedGun
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Re: Short Siberia Load Development Questions...

#61 Post by TattooedGun »

ovenpaa wrote:Brilliant write up! I have enjoyed following this from start to finish and think you did incredibly well given a very steep learning curve of both reloading and shooting on Short Siberia. You need to borrow a digital vernier now and measure one of your bullets to see what length it is. Also you could do with knowing the maximum OAL your rifle, this is easily done with the very minimum of tools (Have you got a hacksaw?)
My dad's ordered me a Digital vernier Caliper from work (saves me £20!) so i should have that by next weekend...

I also bought a bullet puller so i'll have 30 rounds more bullet tips and powder to play with so i can do some more!

a hacksaw.... I'm not sawing through my rifle ;) It'll take ages and take it out of proof ;) :D

I will definately try and work out the OAL of my rifle - it seems .020" jump is the going rate for this type of load, so if i can work that out it may be worth while, although the 46.5gr RWS loads at the OAL I have set up at the minute seem to be (atleast for Mo) Sub MOA ammo (the group is under an inch!, mines just over :( but thats likely to be more my shot placement than the rifle/bullet) which will work well for any competitions/shoots we do in the mean time to me being able to do more batch testing!

Thanks for following the thread, its been fun upping my post count with info that might genuinely help other people getting into reloading/shooting :)
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ovenpaa
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Re: Short Siberia Load Development Questions...

#62 Post by ovenpaa »

Heh, not sure you need to take a hacksaw to your rifle quite yet. Take a fired cartridge, clean and size it, then cut a couple of slots in the neck as shown in the image below and remove the burrs, a nail file is as good a toll as any for this. Now pop a bullet in the end leaving it sticking out quite a way, place it in your rifle and close the bolt carefully, open the bolt, catch the bullet and you *should* have a round sized to your maximum OAL. Measure it and repeat the process a few times to get an average.

S'easy! 8-)
P1140079.JPG
/d

Du lytter aldrig til de ord jeg siger. Du ser mig kun for det tøj jeg har paa ...

Shed Journal
Dougan

Re: Short Siberia Load Development Questions...

#63 Post by Dougan »

Nice Report :good:

When you didn't post yesterday, I was concerned you'd had a 'wash out'...but it looks like you got away with the weather :D

Considering you guys were shooting at a small target (in the aperture) the results for the 46.5 look really encouraging.

You can operate those targets with one person - So you could take turns shooting at the correct 100 yrd target (would tighten up the groups), and marking for each other. You can buy the marking bits and bobs very cheaply, and score cards are only pence (can photocopy a few for load testing), and you don't need a spotting scope - any half decent binoculars will do....

Keep us updated - Now you know your 'zero', I'm looking forward to seeing the results at 300 yrds...
Christel
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Re: Short Siberia Load Development Questions...

#64 Post by Christel »

Thank you to all for this very informative thread.

Well done to TattooedGun for taking it all in and taking it all to the range and posting a report.
:)

:goodjob:
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Re: Short Siberia Load Development Questions...

#65 Post by TattooedGun »

ovenpaa wrote:Heh, not sure you need to take a hacksaw to your rifle quite yet. Take a fired cartridge, clean and size it, then cut a couple of slots in the neck as shown in the image below and remove the burrs, a nail file is as good a toll as any for this. Now pop a bullet in the end leaving it sticking out quite a way, place it in your rifle and close the bolt carefully, open the bolt, catch the bullet and you *should* have a round sized to your maximum OAL. Measure it and repeat the process a few times to get an average.

S'easy! 8-)
P1140079.JPG
Yeah, I'd seen that method in the post i linked to earlier about excessive chamber pressure:

Image

I need to be able to cut the bullet, i was thinking the more accurate the better.... and the hacksaw I have needs new blades, and even then I don't think I'd be very accurate with it!

I'll see what i can do, but thanks again for the heads up on it... definately something I'll be having a go at.
Dougan wrote:Nice Report :good:

When you didn't post yesterday, I was concerned you'd had a 'wash out'...but it looks like you got away with the weather :D

Considering you guys were shooting at a small target (in the aperture) the results for the 46.5 look really encouraging.

You can operate those targets with one person - So you could take turns shooting at the correct 100 yrd target (would tighten up the groups), and marking for each other. You can buy the marking bits and bobs very cheaply, and score cards are only pence (can photocopy a few for load testing), and you don't need a spotting scope - any half decent binoculars will do....

Keep us updated - Now you know your 'zero', I'm looking forward to seeing the results at 300 yrds...
Yeah, we sent my gf down to the butts to mark for us, but it was just whilst we were zeroing enough to be able to get on target so we actually hit the paper plates.

Speaking of, I'm not sure if its worth trying some development of loads a bit more powerful - these were about a 5 inch drop lower than where the RG rounds were coming out on the test target - atleast in Mo's rifle - maybe a 3 inch drop in my rifle. any suggestions as to why this would be?

I think I'll need to borrow a chrono at some point!

300 yards will be fun, if we ever get to go do it! haha, I'm not sure when the next shoot is, although we have our clubs open competition coming up in august which should be a blast! hopefully me and Mo will have the edge on competetive ammo! haha!

when I'm home next I'll have a look for my previous scorecards (there arent many!) - I think I've only ever shot 300yds with Mo's rifle - when i went to Oxford open (the only time I'd shot my RPA not on a zero range) we did 400, 500 and 600 yards....

...need some serious wind coaching to be able to tidy it up though... I didnt have any misses, but I came 1 but last!
christel wrote:Thank you to all for this very informative thread.

Well done to TattooedGun for taking it all in and taking it all to the range and posting a report.
:)

:goodjob:
no Probs :) I'm sure there will be many more posts and questions and stupidity from me yet! :D

Thanks again to everyone whose helped me along the way so far!

If we'd have got to the range without any help from you guys I'd be shooting dangerous loads at god knows what targets :)

:lol: :good:
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Re: Short Siberia Load Development Questions...

#66 Post by TattooedGun »

for anyone wondering what the sight picture may have looked like during this load development - I've drawn this up (rather quickly and crudely) to illustrate what we were seeing, or as close as i can make it (from memory)...

Image

I have left the colour of the tape on them to illustrate how it changed the sight picture, but it all merged into one grey dot when looking down the range...
Dangermouse

Re: Short Siberia Load Development Questions...

#67 Post by Dangermouse »

You may find a Dremel or similar more suitable for cutting the cases?

DM
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TattooedGun
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Re: Short Siberia Load Development Questions...

#68 Post by TattooedGun »

Dangermouse wrote:You may find a Dremel or similar more suitable for cutting the cases?

DM
yeah thats what that guy said on the page i posted that photo from - if only i had a dremel!
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