The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Reloading 270 Win vs 270 wsmGo | New | Find | Notify | Tools | Reply | |
| 270 Win vs 270 wsm | Login/Join |
| new member |
I took my new Rem 700 270 win to the range today and was pleasantly surprised when my final load of 59.5 rl22 with 150 Hornady sp chronoed at 3015 fps over my Oehler. You see my Model 70 270 wsm only gets to 2990 with the 150 Hornady and 61 gr load of rl22. So, you wsm hopefuls, a lot of it is just that, hope. The wsm velocities only seem to be reached with the small bullets in the given calibers. My 300 wsm with 180 gr bullets has a hard time getting over 2900 fps, and then only with a lot of Magpro in the case. | ||
|
| one of us |
In theory that information does not compute but as Hagel says each rifle is an individual. For instance I don't think a 270 Winchester will push a 140 gr out of a 24" barrel at 3210 fps instrumental like my WSM does. Join the NRA | |||
|
| new member |
I had some factory win 270 ammo along and it chronied at 2930 with the 130 gr power point. I was getting a little cratering on the primers, but only with the top load. It was more accurate with 58.5 gr @2940 fps, which is where I will be doing my final work on the load. | |||
|
| One Of Us |
Turkeyhunter, Welcome  We can't paint all .300WSMs with the same brush- my .300WSM, with 24" barrel gets up to 3025fps out of my friends Oehler with handloads (loaded at max book spec. only) and I have had factory loads get up to 3015fps- all with 180gr. TSX or 180gr. Trophy Bonded Bear Claws and 180gr. Accubonds. Also, though I can't recall th exact figures, my friends .270WSM (24" barrel)got over 200fps over standard 270Win book loads with 130gr bullets- we were out one day last year shooting ovr a chrony and I remember our conversation was something like- "Wow, look at those numbers, can't get that out of a 270Win.!" Each rifle IS different and I am not suggesting to anyone to go out and buy a WSM- just that your velocities are low compared to what I have observed- it is not a lot of hope whatsoever to get the velocities that I have mentioned here. Sounds like you have two S-L-O-W rifles  The WSMs are very competitive velocity-wise and on average, the 270WSM will handily beat any 270 Win with equal barrel length. | |||
|
| one of us |
Ive shot and owned quite a few .270 wins and anything over about 2900 fps. with a 150 grain seemed to be over pressure with sticky bolt lift usually starting at around 2850 or so. My 270 WSM starts pressuring up at around 3025 with the 150's. Thats about right for both cartridges. If you want to push your .270 win that fast with 150's go ahead, your shooting a hotter load than I'd want too shoot. Velocity is a pressure sign even if it is without other signs to indicate it. aka. bushrat | |||
|
| one of us |
I have never heard of anyone being able to load 59.5 grains RL22 with a 150 grain bullet out of a 270 win. 57.5 grains is as much as I have been able to load in a 270 win before getting a sticky bolt. Is there a load manual that shows a max past 57.5 grains of rl22 and 150 grain bullets? "Buzzards gotta eat, same as worms" - Josey Wales | |||
|
one of us |
Magpro is too slow for the 300WSM. A very compressed load with 180's still doesn't approach the max pressure...AA rates a max load around 60kPSI, SAMMI gives the WSM's 65k. 4350 (my favorite powder for my 300) is slightly too fast for top V with 180's in the WSM case, and the Nosler book max of 65 grains gives me a solid 2955-2960. 4831 is better in velocity, but accuracy is poorer. I agree with the others...in equal pressure loads with optimum powders for each, the WSM's beat the '06 cased rounds of the same bore by 200fps in otherwise identical rifles. A fast 270 and a slow 270WSM barrel might close that gap, but as another poster here likes to say (in comparing the 300Win to the 300WSM) case capacity counts. Believe nothing, no matter where you read it, or who said it, unless it agrees with your own reason and your own common sense. | |||
|
One of Us |
Turkeyhunter, I hate to break this to you but taking "standard" cartridge and loading it a couple grains over max and then taking a "magnum" cartrifge and loading it a couple grains under max and getting almost equal velocities is not exactly what I would call a real comparison. Mike Legistine actu quod scripsi? Never under estimate the internet community's ability to reply to your post with their personal rant about their tangentially related, single occurrence issue.  What I have learned on AR, since 2001: 1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken. 2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps. 3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges. 4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down. 5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine. 6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle. 7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions. 8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA. 9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not. 10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact. 11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores. 12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence. 13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances. | |||
|
| One of Us |
You are really getting that velocity with 150's? I bet you the pressure is upwards of 70,000. My biggest fear is when I die my wife will sell my guns for what I told her they cost. | |||
|
| one of us |
The alliant manual lists 59.5 gr of rl22 as the max load. I am on a different computer at a friends house. Would they not list it if it wasn't a viable load? Plus, on shortmags.com they list 61 gr of rl22 as max with the 270wsm and the 150 speer.2 Matching Recipes Case Minimum OAL (inches) Bbl Length Primer Powder Charge Weight (grains) Velocity (fps) Pressure (psi) Print Win. 3.325 24.0 Win. W.L.R. Reloder 19 56.5 2,810 61,800 Print this recipe Win. 3.325 24.0 Win. W.L.R. Reloder 22 59.5 2,845 60,300 This is how it reproduced when I did a copy and paste. You can see the 59.5 gr load of rl22 taken from alliant's website. | |||
|
| one of us |
My journal says 57.5 rl22-2909,2881 58-2936,2934 58.5-2955, 2943 59-2980, 2939 59.5-3013, 2971, 2976, 3000 All shot over an Oehler 35p with 3 skyscreens. The bolt was not sticky, I measured the case at the base and it measures the same as the factory ammo I shot. The new cases mic at .464 and the fired ones at .468 for both the factory and reloads.There is a very slight ridge on the primer around the firing pin strike. This is a brand new rifle and these were the first shots fired from it. Accuracy was a little under an inch for the reloads and about 1.25 in for the factory stuff. http://stevespages.com/277_1_150.html | |||
|
one of us |
I have both a .270 (Rem) and a .270 WSM (Savage). With a 140 gr Nosler Accubond, I can easily attain 400 fps more than I can with the .270 Win. You have to be grossly over pressure to get that much velocity with a 150 gr bullet. I can't get that much with a 140 in the .270 Win. I do get 2850 fps and .5 MOA accuracy. I get 3200 fps with the .270 WSM with .25 MOA accuracy. I can get more velocity out of the WSM, but why ???? Elite Archery and High Country dealer. | |||
|
One of Us |
As far as I can tell, a handloaded .270 Win. comes so close to the factory .270 WSM that neither the shooter or the shootee could tell the difference!  "Bitte, trinks du nicht das Wasser. Dahin haben die Kuhen gesheissen." | |||
|
| one of us |
I happened to be at the range chronoing some ammo for my 270 and 30-06 when a guy came up and asked me to check speed on some 270 WSM factory ammo in the 150 grain Power Point load. My rifle using 150 grain Hornady bullets an H4931 came within 40 fps of his. He was getting 2960fps and I 40 fps less. Had I been loading RL 22 I would most certainly beat his velocity by 50fps. My rifle is more accurate with H4831 and a 150 grain projectile at 2920fps is plenty for anything I would this type of load on. The Hornady Light Mag load in the 270 Win is supposed to be right in there with the 270 WSM. Leftists are intellectually vacant, but there is no greater pleasure than tormenting the irrational. | |||
|
| new member |
I went to the range again this morning and had pretty much the same results. The 58.5 gr load was tne most accurate right at an inch. Velocity was again 2940 fps and no pressuree signs that I could see. Could anybody answer me why Alliant has this load and a one grain higher one in its manual and on its website and says it is safe. The pressure signs say it is safe, but some here say it is not. The primers are slightly flattened, but so are the ones with the factory loads. Another question. If someone is getting 3200 fps with a 140 gr bullet in a 270wsm, what is the pressure of this load? It has to be higher than what I am getting as the velocity is much higher. One guy mentions 400 fps more with the short mag, at what pressure is this? Just wondering. | |||
|
| one of us |
The .270 WSM 150 grain power-point load runs over my chrony between 3130-3150 fps. I've played with 150s a bit in the .270 WSM and had no trouble getting over 3100 fps. Based on what I can tell, I expect you can beat top .270 Win handloads by 150-250 fps depending on bullet weight in the .270 WSM. -Lou | |||
|
| one of us |
turkeyhunter: Well, I just had to run your numbers thru my copy of Quickload and here's what I came up with: For the 270 Win., velocity is 3015 fps with 63763 Psi. For the 270 Wsm., velocity is 2990 fps with 54408 Psi. FYI, Quickload says that P-max for the 270 Win. is 62366 Psi and P-max for the Wsm is 64541 Psi. On top of all that, Quickload recommends you only load to 90% of the P-max pressure. Bottom line is that to me at least, you're playing with dynamite by loading that .270 as hot as you are. Bear in Fairbanks Unless you're the lead dog, the scenery never changes. I never thought that I'd live to see a President worse than Jimmy Carter. Well, I have. Gun control means using two hands. | |||
|
| Powered by Social Strata |
 | Please Wait. Your request is being processed... |
|
Visit our on-line store for AR Memorabilia