110 ttsx in a 270 win T3

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g-manz35

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I was trying to load 130gr Hor SSTs in my T3 270 win. I ran into 2 issues. The mag is too short to streach the bullets out to the lands. I also can't get very good accuracy. On the other hand I loaded up some 110gr V max with great success. It got me thinking. The Barnes TTSX seams to be a superior bullet to the SST and the weight and BC is almost identical to the V max I am having success with so I think I will give them a go. So here are the questions.

1. just because I can seat the bullets .001 off the lands does it mean that I should. I have read that the Barnes bullets get the best accuracy when seated .01 off the lands. Is this true?

2. I feel because the the bullet has better retention using a smaller grain is OK. I would like to try the smaller bullet because it resembles the 110 V max in SD and BC. This is my deer gun. If it shoots as well as I think it will I will not hesitate to shoot out to 350-400 yards. At 400 yards I'm getting into the 1100 ftlbs and 2100 fps range is this bullet still going to be effective?

Any recomendations welcome. I will be loading them up with H4831.

G
 
I don't have the knowledge based on experience to answer all your questions. I do have some experience with the Barnes 110 gr. TTSX in 270 win. on white tails. They work very well! From what I have read. the key to Barnes bullets is high velocity. So at 350 to 400 yards I don't know. I hope this helps.
 
Barnes claims the TTSX will expand reliably down to ~1800-2000 fps, so you're on the edge of what it will do at that range. I've been loading the 110 TTSX in 270 Win for a few years now, and the results on game have been impressive, but that is all at ranges under 100 yds so far (shots over this are pretty rare where I hunt). This is using H4350 with 3200 fps at the muzzle, so not a screaming hot load.
 
Thanks guys. Kind of what I thought I would hear. I would like to know how they perform at 2000 FPS. Part of the appeal of going to a lighter weight bullet is reduced recoil. My wife has shot it and can handle the recoil pretty well with 110 gr bullets. Shooting a deer 400 yards out may be a bit of a pipe dream for me. I usually don't bother at that range as I don't like chasing wounded deer that much.

3200 fps seems like a pretty good speed for a 110 gr pill.

G
 
g-manz35 said:
3200 fps seems like a pretty good speed for a 110 gr pill.

G
Click to expand...

That's with 58 grains of H4350, and the bullet seated to 50 thou off the lands, 24 inch barrel. Book max (according to Barnes) for H4350 is 59 grains. I stopped at 58 because the accuracy was there.

Edit: just ran the numbers from my load on a ballistics calculator, and it's over 2000 fps at 500 yards, and over 2200 fps at 400. So, this load would be plenty for what you want to do.

Another edit: a quick scan of the Hodgdon data site suggests you will get more speed out of H4350 than H4831. H4350 is a great powder for 270 - might be worth trying a pound to see if your rifle likes it.
 
Barnes_270 said:
That's with 58 grains of H4350, and the bullet seated to 50 thou off the lands, 24 inch barrel. Book max (according to Barnes) for H4350 is 59 grains. I stopped at 58 because the accuracy was there.

Edit: just ran the numbers from my load on a ballistics calculator, and it's over 2000 fps at 500 yards, and over 2200 fps at 400. So, this load would be plenty for what you want to do.

Another edit: a quick scan of the Hodgdon data site suggests you will get more speed out of H4350 than H4831. H4350 is a great powder for 270 - might be worth trying a pound to see if your rifle likes it.
Click to expand...

I also use the Hodgdon site. I am getting 3050 with the V max and 59.5 H4831 and can go as high as 62 gr. I flip flopped between 4831 and 4350 and decided to go with 4831. My rifle does seem to like it and I also use it in my 338 win so I will stick with it for now.

I am going to give the TTSX a try. If I can get 3200 out of it I will be happy. Thanks for the info.

G
 
Yep - I settled on H4350 due to other cartridges I load for. That's how it goes. Can't run every single powder out there...

Hope it works out for you! I'm very happy with them.
 
you can't go by reloading manuals for speed. Every batch of powder, every barrel and every chamber pressure is different. I love ttsx bullets but with every bullet you have to play with seating depth to find out what your individual gun likes. unless you have a proven accurate load, I would personally not even try hunting at 350-400 and unless you can chrony for speed determining drop for a given distance will require lots of experimentation.
 
paperslayer said:
you can't go by reloading manuals for speed. Every batch of powder, every barrel and every chamber pressure is different. I love ttsx bullets but with every bullet you have to play with seating depth to find out what your individual gun likes. unless you have a proven accurate load, I would personally not even try hunting at 350-400 and unless you can chrony for speed determining drop for a given distance will require lots of experimentation.
Click to expand...

Yes, but the point that I was making was that when comparing multiple published loads, one powder consistently was topping out at a higher velocity than another for a given chambering. Picking your powder does make a difference - not that one can determine absolute velocity, but that one can determine relative velocity when comparing two powders. As for determining drop, etc, I have chrony'd my load and it's exactly at 3200 fps with a small SD.
 
paperslayer said:
you can't go by reloading manuals for speed. Every batch of powder, every barrel and every chamber pressure is different. I love ttsx bullets but with every bullet you have to play with seating depth to find out what your individual gun likes. unless you have a proven accurate load, I would personally not even try hunting at 350-400 and unless you can chrony for speed determining drop for a given distance will require lots of experimentation.
Click to expand...


An answer to a question that nobody asked. I chrony my loads. run them through a balistics calculator adjust my point of aim at 100 yards then test them out to 300 to confirm. The V-max load I worked up shot 1 1/4" at 300 yards to just about the exact point I had figured with the ballistic calculator -5.5". I'm hoping I get something at least half this good with the ttsx before I even think about shooting out to 300 yards on a deer. Even then it would have to be a calm day and I would need a rest. Now do I now have permision to go hunting?



G
 
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g-manz35 said:
I was trying to load 130gr Hor SSTs in my T3 270 win. I ran into 2 issues. The mag is too short to streach the bullets out to the lands. I also can't get very good accuracy. On the other hand I loaded up some 110gr V max with great success. It got me thinking. The Barnes TTSX seams to be a superior bullet to the SST and the weight and BC is almost identical to the V max I am having success with so I think I will give them a go. So here are the questions.

1. just because I can seat the bullets .001 off the lands does it mean that I should. I have read that the Barnes bullets get the best accuracy when seated .01 off the lands. Is this true?

2. I feel because the the bullet has better retention using a smaller grain is OK. I would like to try the smaller bullet because it resembles the 110 V max in SD and BC. This is my deer gun. If it shoots as well as I think it will I will not hesitate to shoot out to 350-400 yards. At 400 yards I'm getting into the 1100 ftlbs and 2100 fps range is this bullet still going to be effective?

Any recomendations welcome. I will be loading them up with H4831.

G
Click to expand...

<Edited major typo>

1. RTFM!!!! It's simply not recommended to seat a monometal Barnes bullet less than 0.030"-0.050" off the land! You coud get an extremely dangerous pressure spike.
Also H4831 is a slow powder for a light 110gr bullet (H4350 is more appropriate).

2. 270 Win will drive a 110gr TSX at 3400+ fps which is fast enough to kill any medium game at any sensible range. If you're really into long range hunting, try a Nosler 140gr Accubond at 3000fps which provides much better ballistics and accuracy at long range.

Alex
 
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AlexF said:
1. RTFM!!!! It's simply not recommended to seat a monometal Barnes bullet less than 0.30"-0.50" off the land! You coud get an extremely dangerous pressure spike.
Also H4831 is a slow powder for a light 110gr bullet (H4350 is more appropriate).

2. 270 Win will drive a 110gr TSX at 3400+ fps which is fast enough to kill any medium game at any sensible range. If you're really into long range hunting, try a Nosler 140gr Accubond at 3000fps which provides much better ballistics and accuracy at long range.

Alex
Click to expand...

Um, 0.3 - 0.5 inches? Ya, that ought to do it... :HR:
 
AlexF said:
1. RTFM!!!! It's simply not recommended to seat a monometal Barnes bullet less than 0.30"-0.50" off the land! You coud get an extremely dangerous pressure spike.
Also H4831 is a slow powder for a light 110gr bullet (H4350 is more appropriate).

2. 270 Win will drive a 110gr TSX at 3400+ fps which is fast enough to kill any medium game at any sensible range. If you're really into long range hunting, try a Nosler 140gr Accubond at 3000fps which provides much better ballistics and accuracy at long range.

Alex
Click to expand...

On the Barnes web site it recomends a COL of 3.24 which would put the bullet just of the lands. So you are recomending that I just pound that bullet another half inch in!:eek: If its just the same with you I don't think I will take your advice.

If I remember right Barnes suggests seating the bullet .05 off the lands, but I can't find where I read that.

I think this thread has reached the end of it's useful life.

Thanks. George
 
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