What's the "myth" with T3's and the WSM calibers all about?

[tjkanavel]

I have heard a couple different times that the T3's in the WSM calibers (270 & 300) will not reach expected velocities because of a long throat? Is this only for factory loads and can this be fixed by handloading and setting the bullet a little farther out? I have a buddy that has a new T3 Lite in 270WSm on hold until I can find out a little more on this subject.Would he be better off just going with the 270 Win? I do handload,have for years, so setting the bullet out further will not be a problem. Just dont want him to sink money in a rifle that will not get the advertised velocities,that is especially the reason for wanting the 270WSm over the 270Win.

Thanks for all the help-Tim 

[Luckyducker]

  I have a T3 chambered in 300WSM and it is pretty short chambered.  A friend has a Browning A-bolt in 300WSM and it's chamber is the same length as my Tikka and from what I have heard this is pretty much the norm for WSMs.  I shoot 165 grain bullets in mine and should I ever load heavier slugs I'd have to seat them deeper for the chamber to acomodate them.
 

[wild willy]

I loaded quite a bit last year for my son Tikka 300wsm most seated as long as the magazine would allow and his gun still 200fps slower than listed for several loads. I have Whitetail 7mm08 and its slow too. I been thinking about getting a T3 270wsm be nice to hear from someone who has chrono the 270 wsm and the 270 Win

[Zachary]

It's not a myth - it's true.  There was a write up in one of the magazine some time ago.  A savage and a T3, both in .270WSM.  The T3's velocities were about 200 fps slower than the Savage.
This has also been confirmed by at least one of our members.

Zachary

[memyselfni]

unfortunately Zachary seems to be right, i made up a dummy round with a loose fitting projectile in a case that had been lightly neck sized, and found that with the projectile seated to just touch the lands, i had to single load them into the chamber, and that when extracting the loaded round i had to remove the bolt to get it the OAL was that long, this is in a t3 lite ss .270 wsm. Also with a max charge of AR2209 the muzzle velocities were about 200 fps slower than expected , hence i am looking at rebarreling with a lilja barrel, but am unsure as to how to get one into the country as i live in little old New Zealand.
hope this helps
Gary

[doctordisaster]

I'm not trying to sound like an Ahole but ,so what?My 6.5 Swede puts the pill on the spot .I don't think that slower velocity would have any negative affects in mine.I guess I don't understand the big deal,if the bullet performs as it should.I think some people confuse velocity with performance.They push it so fast you wear the barrel faster and the bullets explode.Am I right or wrong?Like I said I'm not picking a fight, I would just like to know if I'm thinking this wrong.

[memyselfni]

i see your point, and agree with you to a certain degree, i use 180gr bullets at about 2500 out of my .308 for big red and sika deer in the thick native bush of the north island of new zealand where a lot of shots can be at 15 feet at an angry red stag during the rut, but in my wsm i want the extra velocity and energy for shooting big red deer at longer ranges in the open country, where they can go anywhere up to 400lb dressed out, and in a lot of the places i hunt 400 yard shots arnt uncommon, and with a low amount of animals you need to take advantage of any reasonable shot you can, so yes the difference in energy, and wind drift especially helps a lot when your talking a 140gr accubond @ 3200 like some of my friends are using as opposed to jst under 3000 fps which is the max i can get, although with 3/4 minute groups