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Slow .270 win

K0na_stinky

Hey I have a Savage Model 111 in .270win with a 22" barrel. My girl friend has a Savage edge in 7mm-08 with a 22" barrel. I have been hand loading for awhile and we havent started to load 7-08 bullets for her gun.

I am at the starting load for my bullet powder combo. I'm getting just over 2700fps with a 140gr nosler acubond bullet infront of 53.4gr of reloader 19 and a CCI #200 large rifle primer.

Her gun with factory 140gr ammo is getting just shy of 2800fps.

Why is her gun getting higher speeds with less powder?

Is a 22" barrel to short for the .270 win cartridge?

One last question. Would switching to a magnum primer help burn more powder quicker for faster speeds?
 
A smaller case combined with a larger diameter bullet will make more efficient use of the powder, up until the time it reaches maximum pressure. Your larger 270 case will take more powder to generate the same pressure, but it should give higher velocities. 270 bullets should have a higher BC than 7mm, for the same weight and hold the velocity better. Barrel length will cost some velocity in both guns, but probably a bit more in the 270. I would go with Hodgdon H1000 if you want a little more velocity. May get you up to 2900 or so.
 
The only reason I want a faster load is for hunting. I'm ok with the load I have for target shooting. Just wanted to have a faster gun then my GF. But it turns out hers is faster for cheaper. :(
 
Expecially in Canada for hunting, and colder places like northern Ontario, I think it makes sense to use temperature insensitive powders like the Hodgdon Extreme line. Essentially that is any of the extruded stick powders that are actually made by ADI in Australia and brought over here and packaged by Hodgdon.

http://www.hodgdon.com/smokeless/extreme/page3.php#top

http://www.hodgdon.com/extreme.html

Use of this powder allows us to develop safe maximum loads in the heat of summer, and then actually use them in the cold of winter, and still get the same velocity out of them.

I think they make some sense at the range too. I shoot at close to freezing in the early AM and by noon it can be 15 C. On top of that, you have the cartridges sitting on the bench at close to freezing, and you pop them in a chamber that can be quite warm from shooting a few shots in a row. You do not have to panic about that cartridge/powder warming up more or less as you adjust your aim, or get distracted for other reasons.

H1000 at max load will probably fill your case. That in my opinion is a good thing too. Makes ignition more consistent for more consistent velocities.
 
The load is slow because you're not close to max charge for that bullet. RL19 is close to the same burn rate as H4831 & I shoot 58 grs with a 140 BT & a cci 200 primer to get 3000 fps out of 24" of tube. Try the H4831, you won't go back.
 
I have used Hybrid 100V with outstanding velocitys in my 270. Shoots as accurately as anything else I've ever used and nets around 90-100 fps gain with bullets between 130 and 140 gr with acceptable pressures. I use winchester brass and cci br primers. Rifle is a remington 700 with a PacNor 24" barrel. Hope this helps.
 
Beau said:
Did you say it's a starting load?

Add more powder if you aren't seeing pressure signs.
Click to expand...

So I have to add powder just to try to keep up.


So I wonder if we both had 30" barrels if it would be a different story.
 
GEDC0512.jpg


140grn Nosler BT 55grns of H4831.
 
I think the combination of RL-19 @ 53.4 gr. is your problem- with that powder (somewhat slow for a .270 IMO), loaded well under the capacity of the case in a 22" barrel, I think 2700 fps is about what you should expect. With that load, I would expect that you are nowhere near a hot load and have plenty of room to build up. Work up from there. With a 22" barrel, you should easily be able to achieve a safe load that puts you in the 2900's.

I shoot a .270 w/ a 24" barrel using H4350 and my loads average out at 3092fps. I am building a rifle to shoot a 7WSM w/ a 22" barrel right now and I fully expect to be able to get in the 2800's and maybe 2900fps, so I don't think a short barrel is your culprit here.
 
PowderMonkey said:
I think the combination of RL-19 @ 53.4 gr. is your problem- with that powder (somewhat slow for a .270 IMO), loaded well under the capacity of the case in a 22" barrel, I think 2700 fps is about what you should expect. With that load, I would expect that you are nowhere near a hot load and have plenty of room to build up. Work up from there. With a 22" barrel, you should easily be able to achieve a safe load that puts you in the 2900's.

I shoot a .270 w/ a 24" barrel using H4350 and my loads average out at 3092fps. I am building a rifle to shoot a 7WSM w/ a 22" barrel right now and I fully expect to be able to get in the 2800's and maybe 2900fps, so I don't think a short barrel is your culprit here.
Click to expand...
Ill have to try working up the load in the spring I guess. Its starting to get pretty cold here in north western ontario.
 
i think you are using the wrong powder load, i use imr/h 4350 with that bullet and the load is 52.o gr. the velocity is up just over 2900.

the bbl length willcost a little but not much.

try 4350 and work upto the 52gr lever. it should also shoot very accurately.

Bob
 
That mossberg shoots great for a hunting rifle.Speed is important to a degree but remember you dont have to melt the barrel to be accurate and accuracy means everything for a humane kill on any animal. I had an older mossberg heavy varmint in .243 and it shot lights out at 100,200 yards.I sold it and now I am kicking myself for selling it. Good hunting.
 
jonbearman said:
That mossberg shoots great for a hunting rifle.Speed is important to a degree but remember you dont have to melt the barrel to be accurate and accuracy means everything for a humane kill on any animal. I had an older mossberg heavy varmint in .243 and it shot lights out at 100,200 yards.I sold it and now I am kicking myself for selling it. Good hunting.
Click to expand...
Yeah thats true. I just wanted to get that 140gr bullet closer to 3000fps for hunting deer. There are some spots for longer shots so it wouldnt hurt haveing a bit of extra power.

So far my rifle has been very accurate. Its hard to make a load that shoots worse then 1" at 100 yards.
 
The magnum primers didn't do anything for any of my loads. No change positive or negative. I use standard LR primers now.
 
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