Can you tell us the length of your bullets, from tip to tail ?
You have the wieght and the cal, but not the length (on your website) which is relatively important.
A morning with Yew Tree
- Thread starter NigelM
- Start date
Can you tell us the length of your bullets, from tip to tail ?
You have the wieght and the cal, but not the length (on your website) which is relatively important.
If you have a 6.5 I can drop you in a handful of TLR to try yourself . Projectiles only
Honestly ,you are going for the best there is straight away if you do.
I'll never buy any other non toxic
Thanks, that very kind but I don't have a 6.5 anything....
Yes!!!!
I had queried this previously but due to the amount and cost of R&D involved for such a limited market (probably just you and I) it won’t happen any time soon
@Yew Tree Fieldsports
What weight have you settled on for the 7 mm TLR and what minimum twist would you recommend?
(I have Al’s sako 75 .280)
What weight have you settled on for the 7 mm TLR and what minimum twist would you recommend?
(I have Al’s sako 75 .280)
Indeed. AFAIK we as yet have just the two boutique indigenous manufactures, Yew Tree and Virtus Precision. Approaching things with slightly different ideas.
Observing with interest, for when the day comes, and wish both all the best and admire the rapid development occurring, for our conditions.
Hopefully they will be able to scale up for what I predict will become a significant market, but even now they do seem to be pretty much a better bullet than all but the best leaden ones, for use on quarry, at our sorts of ranges.
Kudos, and I have high hopes.
Will the standard 6mm be ok ?
Yes. I asked and 1 in 10" is fine for the 6mm hunting bullet. There are previous posts on here from people using it with no problems.
At the moment 130 grains and they go in a 9.5” or faster.
1.174”
The 6mm TLR is 1.174”
Any data for the 80 grain 6mm with n160? I will need to stoke it up for my 16" barrel to get it deer legal
I would probably use a faster burning powder in a barrel that short to be honest. By all means pm me and we can work out a plan but as you say it might be touch and go whether you can get the bullet going fast enough.
Spot on, from memory it’s 1:8
If, as you say, your .243 has a 16" barrel, then that's pretty unusual. You'll struggle to find any meaningful load data.
I suggest you download P-Max which lets you feed your data in for a vast variety of powders. A quick look shows to get 3000fps you'll need to use N540, and then it's pretty well a max load pressure wise. Single base Vit powders just don't get you there and waste unburnt powder out the muzzle.
I'm sure Rich at Yew Tree will give you more accurate info.
As said, a 16" 243 is pretty well out of the ballpark for say a 243. If you can get there for large deer (of which in England/Wales even a Roe is), then you'll have been doing very well. Possibly the first ever to manage that.
Of course, if precise legalities matter less to you (they do to me) then you might be a bit more casual about observance.
Stability is a function of twist rate and MV you probably know ,fundamentally down to rotational spin speed and bullet length. Though there is lots more to it than that. I generally look to the Berger stability calculator to indicate that. I also increasingly trust P-Max for an approximation of the internal ballistic stuff. rather than trying to nudge QuickLOAD to match up between theory and reality. I can't do that really, without a lot of time, effort and materials. Plus a chrono of course. Not set up to do that nowadays (used to be).
Both are cloudy things, not downloadable, running on some server elsewhere, so avail yourself of them whilst they are live. Likewise I simulate my external ballistics on some cloudy things, two or three that I compare. Helps if you have some sort of BC data from the manufacturer, but that is no easy matter for them to measure , characterise, and state confidently, with no fibbing.
But the proof of the pudding is in the eating
3087 fps with an 80 gr for 1700 ft-lb, realistically you want to be comfortably over so 3100-3125 fps.
If I can do it with 29 gr of powder in my 25-45 out of a 25” tube it will be achievable with 40 odd grains of powder in a 16” .243. But as you say it will need a case stuffed with powder to get the initial pressure up and a lot will be burned off as muzzle flash but if the bullet gets there then mission accomplished.
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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