While reloading for my 270WSM I'm finding that I'm not able to get even close to Max loads never mind velocity claims for the cartridge. I found a good load of 67 grains or H1000 which is a starting load basically. At 68 grains my third shot gave a bit of a stiff bolt lift. The next load of 69 grains gave stiff bolt lift with each shot. The brass is Fed Cartridge brass and the bullets are set back from the rifling so it's not a high peak spike from the initial engraving of the bullet. When I went down to the range today with the chronograph the 67 grain load was only doing 2922 fps. This is pretty pathetic for a cartridge that is supposed do 3200 fps. Thinking back I think my Tikka T3 peaked out at about 2950 fps with the same 140 Accubonds. Has anyone else found this same issue. When I chronographed the 150 Fusions they were doing 3050 and the factory Accubond loads were doing 3225 fps. Oh yes the primers were cratering pretty good at 68 grains of H1000. According to the Hogdon reloading pages you couldn't stuff enough H1000 in the 270 WSM case to cause high pressures. I'm a little puzzled.
Thanks for any input,
Dave

What brand of rifle is it?...............DJ

It's a Savage the other that seemed to show the same traits was a Tikka T3. Both have 24 in barrels. The reloads are right on in that they spin within .001 on my concentricity gauge.
Thanks Dave

I couldn't get 140gn accubonds to group in my rifle but others do , particularly with RE 22 . Reloder 22 and Reloder 25 were both capable of pushing the 140gn to 3200 FPS in my Sako 75 without high pressure signs. Have never tried Federal brass but have read that it can be soft . Maybe that's your problem ? I use Winchester in my .270 WSM .

Perhaps your re-sizing die is screwwed down a bit too far giving you excessive headspace?

I just use a bushing die that sizes the neck only so that would eliminate the headspace possibility. I was wondering about the brass. I had the same sort of problem with 500 A-Square brass but I don't think that I had the primer issue at the same time. It's odd though because when I chronographed the Fed Cart factory loads they were shouting 130's at 3300 fps and not locking up. Well the odd one would have a bit of tight bolt lift. I'm going to town this Saturday so I;ll try some other brass.
Take care
Dave

quote:

Originally posted by 470 Mbogo:
I just use a bushing die that sizes the neck only so that would eliminate the headspace possibility. I was wondering about the brass. I had the same sort of problem with 500 A-Square brass but I don't think that I had the primer issue at the same time. It's odd though because when I chronographed the Fed Cart factory loads they were shouting 130's at 3300 fps and not locking up. Well the odd one would have a bit of tight bolt lift. I'm going to town this Saturday so I;ll try some other brass.
Take care
Dave

Do a water capacity weight on fired cases & compare.

I've heard similar stories about a .300WSM. Maybe the WSMs aren't such a good invention after all. No personal experience though.

With my Tikka T3 lite 270WSM, I get sticky bolt lift at 2-3 (or more) grains below several suggested max loads. With 130 gr bullets I can get 3020/3050 fps. but, since it's very accurate and light, I'm satisfied anyway.

P.S. I use Rem. and WW brass.

I'm not able to access my notes, but I load the 140 Accubond with RL-19, and the velocity averages 3240 fps from my A-bolt. I haven't tried RL-17 yet, as it wasn't available when I was working loads. I have had trouble with Federal brass in different calibers, and stopped using it a few years ago.

I have found that in both my 270WSM and 300WSM, I have to full length resize or I will get a tight case going in as well as coming out. I have found the case head "bows" or becomes convex with each reloading due to it's width and apparently not enough brass thickness in the face of the case head. If I completely full length resize the cases the problem seems to go away. In my 270WSM I have gotten over 3200 fps. with 130 gr's. , 3100 with 140 gr's. and yesterday just at 3000 fps. with 150 gr. bullets. The 150's were with RL-19. The others were with H-4350. I have shot factory Winchester 130 gr. @ over 3200 fps. All in a 24" barreled Win. M-70. In my 300WSM I am pushing 180 gr. bullets in the mid-3000 fps.
I also forgot to mention that I have reloaded some nine cases,that I use repeatedly for working up loads for the 270WSM, over 10 times with NO sign of case seperation or thinning just ahead of the rim area.

Seems like Rae59 and I have had about the same expirences. I have never had any luck neck sizing my 270 WSM. I always FL size my brass. I have switched to Remington brass because the Win brass after about 4 reloads the primer pockets were getting to large and primers went in with little to no resistance. So far the Remington brass is holding up much better, I have about 6 loads so far in one group.

I have shot my 270 a whole bunch over the past two years. I have developed loads for 130's, 140's and 150's. I have a Win mod 70. It will not shoot factory rounds. The only way my gun will group factory is if I pull bullets and reseat on the lands. There is to much jump and my gun does not like it.

In all my loads so far my rifle likes max or .5 grains below published max. I mostly use Lyman and Sierra reloading manuals.

I have found in my rifle that it likes IMR 4350, R-19, and R-22. My most accurate loads have been R-19 and R-22.

In 130's I am getting 3250fps, 140's 3100fps, and 150's 3000 fps.

I get slight primer cratering in my max loads so far the published maxes in the books is pretty close to max in my rifle.

My gun likes 130 and 150's the best and is under 1 inch groups in both.

You either have a real tight chamber or the neck sizing is the problem.

Most everyone I know that reloads the SAUM's or WSM's have had neck sizing issues and have gone exclusively to FL sizing.

quote:

Originally posted by Rae59:
I have found that in both my 270WSM and 300WSM, I have to full length resize or I will get a tight case going in as well as coming out. I have found the case head "bows" or becomes convex with each reloading due to it's width and apparently not enough brass thickness in the face of the case head. If I completely full length resize the cases the problem seems to go away. In my 270WSM I have gotten over 3200 fps. with 130 gr's. , 3100 with 140 gr's. and yesterday just at 3000 fps. with 150 gr. bullets. The 150's were with RL-19. The others were with H-4350. I have shot factory Winchester 130 gr. @ over 3200 fps. All in a 24" barreled Win. M-70. In my 300WSM I am pushing 180 gr. bullets in the mid-3000 fps.
I also forgot to mention that I have reloaded some nine cases,that I use repeatedly for working up loads for the 270WSM, over 10 times with NO sign of case seperation or thinning just ahead of the rim area.

Rae59 try R-22 in your 150's if you want a little more velocity. I developed some 150 NP golds I bought a few years ago on clearance and was getting 3075fps with R-22. It grouped about .75 inches at 100 and with R-19 I got the same group but 2990fps. Just a thought.

I have used extensively RL-17, RL-19, RL-22, RL-25, IMR- 7828SSC, and Magpro with my two Model 70 Winchester .270 WSM's. My fastest speeds with accuracy are with RL-22-RL-25-Magpro. I can get 3400 fps plus with RL-22 and Magpro, using 130 grain Nosler Solidbase and North Fork bullets. I get 3250 plus with 140 grain Barnes TSX, and 3100 plus with 150 grain Nosler Partitions. Compared to many older and supposedly more powerful chamberings those numbers stack up awfully well in my opinion. I have always had very very high regard for the .270 Win, but this WSM version is something to behold. I can only imagine what O'Connor would have said. Good shooting.

I am a fan of Remingtion brass and will not load Federal brass, however I don't load for the 270WSM. I am getting 2950 ft/sec with my 270Win shooting 140 grain Hornady boattail bullets over 63 grains of H1000. You should try some loads with Rem brass and see what that does.

Thanks for all the replies guys. I contacted my buddy at Chilcotin Guns and he verified that they have been having trouble with Fedral brass in the short mags. The 7mm being worse than the 270 WSM. I have him looking for some Norma brass for me. They have it at Sinclairs but they won't ship to Canada. It sucks trying to get stuff from the States. I bought the rifle to be my go to deer gun. The idea of a 130 at 3300fps is perfect.
I may have just got mixed up with soft brass and been hitting the wall a little on the early side. I have some Winchester brass so I might see if it is going to make a difference.

I'm not sure why neck sizing would be a problem. I bought bushing dies so I could make the straightest ammo possible and bullet run out is .001 to .0005 so I'm not looking forward to ruining that by full length resizing.
Take good care
Dave

My pair of P-64 Mod. 70 Fwts. in .270Win. will run 150NPts. at 2900 from their 22" tubes, all day long. I have had several of the Std. Mod. 70s which would push 3000 with the same loads and, I gotta wonder, what real advantage do the "whizzums" offer?

Maybe it is me, but, I have heard SO MANY "tales of woe" about these rounds that I will stick to the .270Win./.280Rem. and .338WMs and avoid the hassles. Of course, I am a lazy old geezer and hate rifles that give me problems!

quote:

Originally posted by 470 Mbogo:
Thanks for all the replies guys. I contacted my buddy at Chilcotin Guns and he verified that they have been having trouble with Fedral brass in the short mags. The 7mm being worse than the 270 WSM. I have him looking for some Norma brass for me. They have it at Sinclairs but they won't ship to Canada. It sucks trying to get stuff from the States. I bought the rifle to be my go to deer gun. The idea of a 130 at 3300fps is perfect.
I may have just got mixed up with soft brass and been hitting the wall a little on the early side. I have some Winchester brass so I might see if it is going to make a difference.

I'm not sure why neck sizing would be a problem. I bought bushing dies so I could make the straightest ammo possible and bullet run out is .001 to .0005 so I'm not looking forward to ruining that by full length resizing.
Take good care
Dave

I just read the post for the first time. First hting that came to me was Fed brass. I get a lot of 1x fired Fed brass and I find it very soft and many times primer pockets are loose.

I would give Win a shot. Works in my 300WSM and 2760WSM very well. I also recommend annealing. Since I've don it it stopped necks from splitting,.

Dave, you don't have to buy a FL sizer. Buy a Redding body die. My experience is like Rae and Earl. I tried just neck sizing with a bushing die and would get sticky bolt lift. Setting the body die to bump the shoulder just enough for resistance free chambering eliminated sticky bolt lift on "reasonable" loads. FWIW, my theory is that the WSM cases have so much sharp shoulder area that very little case expansion causes binding.

405wcf

Any chance it's a tight neck issue? Have you measured loaded round necks and compared to fired neck diameter?

Earl, I thought about trying the RL-22, just have not gotten around to it - yet.
405 WCF, the problem I have had (I think) is that the face of my Winchester brass bowls out just a tad after each firing. If I don't F-L resize, and I mean "Full Length Resize" with the press handle camming over, the bolt face will leave a shiny ring around the primer pocket when the bolt is cammed over. If I F-L resize this problem goes away. I have not tried any other brass, so it could be the Winchester brass. I doubt it, but it could be. The brass stretches very little and so far I have not had any trouble with the primer pockets opening up - yet.

It's not a case neck issue because I've outside neck tuned all my brass. I'm thinking with the input that it's a brass problem but I'm sure my Tikka T 3 stopped quite a bit before max velocity. It's interesting the problems that do arise and finding a solution. Soft brass is the issue yet my primer pockets are fine which is probably what fooled me a bit.
I also have the Redding bump die but when I use it the concentricity of the case goes from .001 to sometimes as much as .0045. I have a guy looking into Norma brass and I will pick up 20 new Winchester brass this Saturday.
Take care,
Dave

Gentlemen ----- I have shot my two .270 WSM's extensively at this point and have not had problems mentioned here. The first 20 rounds I resized were a little snug the next shooting. I lowered the sizer die and got rid of the problem. I read about the RCBS X-Die that would not stretchs the case and now use it exclusively with no problems at all. I have always used either Winchester or Remington brass. With 130 grain Nosler Solidbase bullets I am getting 3400 up to 3462 fps and to me that is a very significant difference over the old .270 Win, which I still greatly admire. I call this my perfect Deer load. Good shooting.

Rae must have the same run of Winchester mod 70 that i have. The problems you have expirenced are spot on to what I have had. Other than brass. I run my FL sizer until it touches the shellholder on my press then about another half of turn to get them shoulder to bump back enough to not elimate the ring you describe and easy bolt close.

I have not tried Norma brass but the price tag drew me away from it. I am getting much better brass life with Rem brass then I was with Win Brass.

I have owned two Winchester .270 WSM's. Could not get them to shoot MOA. Got rid of both guns. I have 4 .300 RSAUM and they shoot. Just took a .300 WSM and made a .416 WSM. While developing loads we have found Rem. and Win. brass to have a large variation in wall thickness and soft brass. Norma brass solved all the problems. I now wonder if I had tried Norma brass in the .270 WSM if it would have been better. We also had simular problems with the .300 RSAUM brass but they all shot well, sub-MOA. Norma was best for the .300 RSAUM.

BTW the .416 WSM shoots MOA. Go figure.....Tom