A morning with Yew Tree

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Sharpie said:
Nope, I really don't think so in such an overbore chambering as a 243. Even if remotely achievable and could stuff in enough of the best powder to the limit of pressure, even beyond, it would have to be stoked up to the max. I don't really think that trying to get a 16" 243 all-deer legal is the wisest idea.. Nor the best recipe for barrel life.
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Well if it’s a stalking rifle and it can’t be achieved then it’s going to need a new barrel anyway so what’s the harm in trying, provided you stick to safe reloading practices - N160 definitely won't do it though...

@takbok posted this link on a similar thread 5 years ago

243 Winchester- Effect of barrel length on velocity


80 gr seems to lose around 320 fps dropping from 24 to 16", Nosler shows 2 loads that would give 1700 ft-lb with a 320 fps loss, just, - IMR4831 and unsurprisingly RL17

243 Winchester Load Data

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That's not to say its possible but there is potential. Yes it is going to eat the barrel but the barrel is on there so it may as well get eaten then replaced with an 18.5" or something along those lines.

The other thing, as I found with the Sharps is you need to experiment with different brass and primers (always starting low and working up with each change) and then you might just get lucky and hit on a combination that works, safely. It took me over a year and a dozen or so test loads to get there!
 
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25 Sharps said:
That's not to say its possible but there is potential. Yes it is going to eat the barrel but the barrel is on there so it may as well get eaten then replaced with an 18.5" or something along those lines.
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I'm not so sure about the potential. Particularly if wanting to shoot a 6mm copper bullet with 10" twist. Whilst 10" twist can stabilise leaden ones at normal barrel lengths, at normal velocities, change these variables (e.g. MV, copper vs. lead, maybe an 80gr copper might match a lead 100gr for stability), drop the velocity (stability = product of MV and twist) and I foresee a perfect storm.

A more recent (2020) article from Bruce Potts, where he was surprised by how well a 270 responded to a 16" chop. That's a lot more powder available though. It's also pretty easy with a 308. Moderator essential, obviously. I suspect a 7-08 could do it too.

What happens when you shorten a rifle barrel?
 
Sharpie said:
I'm not so sure about the potential. Particularly if wanting to shoot a 6mm copper bullet with 10" twist. Whilst 10" twist can stabilise leaden ones at normal barrel lengths, at normal velocities, change these variables (e.g. MV, copper vs. lead, maybe an 80gr copper might match a lead 100gr for stability), drop the velocity (stability = product of MV and twist) and I foresee a perfect storm.

A more recent (2020) article from Bruce Potts, where he was surprised by how well a 270 responded to a 16" chop. That's a lot more powder available though. It's also pretty easy with a 308. Moderator essential, obviously. I suspect a 7-08 could do it too.

What happens when you shorten a rifle barrel?
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I’m stabilising a .257 80 gr TTSX in a 1:10 for 1/4 moa accuracy at 100 yards with a velocity of 3120 fps.

Admittedly the .257 is a bit fatter but if a hollow point 6 mm is used I suspect it will be shorter than the tipped TTSX.
 
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NigelM said:
A perfectly good thread about a world class British product hijacked by @25 Sharps and @Sharpie having a ****ing contest over ballistics. Can't help themselves.

Get a life you two.
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It’s more of a conversation than a p*ssing contest, trying to answer a query raised by the thread, about the application of the product mentioned!!

What’s more @SussexSteve is going try the product mentioned to see if he can get it to stabilise at lower velocity and report back, which will be useful to anyone searching this in the future.

That’s what happens on forums!
 
NigelM said:
A perfectly good thread about a world class British product hijacked by @25 Sharps and @Sharpie having a ****ing contest over ballistics. Can't help themselves.

Get a life you two.
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I think @Yew Tree Fieldsports can advise rather better than me. This is no p@ssing contest, nor even a digression. Just an exchange of opinions and a little knowledge.

I'd suggest you go back to post #35 and read it again.

@SussexSteve is going to give it a good try, with his edge-condition, and whatever he finds, it might be valuable info. for somebody else too. Or even of slight interest to you.
 
Accuracy is very good for factory tikka and the same ration yew tree recommend was same hole group's in the following blaser 👍 . Off for a sit out tonight see how these go
 
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