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270 Abolt

Old 09-12-2003, 07:13 PM
  #1  
153
Spike
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Join Date: Sep 2003
Posts: 80
Default 270 Abolt

I got new 270 A-bolt SS left hand with Boss two weeks ago.Chorograph with 130Gr Winchester Ballistic Silver Tips,2811 fps at muzzle.I though with 22' inch barrel and BOSS there would be some loss but not this much.Winchester data shows 3050 fps on website.Still glad I got the gun with BOSS,first time out after barrel breaK-in less that an inch with Hornady Light Mag 130 SST' s less that an inch three shot group at 100 yards.Have yet to chrono the Light Mags will update more later.Just though everyone should chorograph the loads they shoot and see what the real deal is and not trust the factory charts.At 100-200 yards may not make a difference but 250+ could cost you a BUCK.
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Old 09-12-2003, 08:23 PM
  #2  
 
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 1,051
Default RE: 270 Abolt

Congrats on buying a great firearm. I loved my SS .270. I had one of the older models, without the boss, and it liked Remington CoreLokt and Federal Premier ammo. Both would shoot about 3/4 inch groups at 100 yards. And with handloads, 130 grain ballistic tips, 58 grains of H4831 powder, I got 1/2" groups. And it was a box stock rifle.

Two things to remember. With the BOSS system, your barrel is actually only about 20 inches long, not 22. They cut off some of the barrel to add the BOSS. Also, ammo manufacturers rarely give accurate velocity listings on their ammo because they are usually tested in pressure barrels, not real rifles, and they are usually 24 to 26 inches long. It is about normal to be shooting in the 2800 - 2900 fps range with your rifle. Don' t sweat it. Sight it in for 1 inch high at 200 yards. That' ll put you about 3 inches high at 100, and only about 7 inches low at 300. So if you get a 300 yard shot, just put the cross hairs on the backbone and fire. A more important consideration is cross wind drift. At that range, you' ll notice about a 3 inch difference in impact point with only a 10 mph cross wind. So if you take shots that long, practice in windy conditions to know what the bullet is going to do.

Good luck this year, and enjoy a very fine firearm.
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Old 09-12-2003, 09:37 PM
  #3  
Spike
 
Join Date: Feb 2003
Location: Schuler Alberta Canada
Posts: 69
Default RE: 270 Abolt

I have an older Browning in a 270 Win 22‚ÄĚ barrel. When I load up 130gr. Hornady SST the speed is just below 3100 ft/sec.
A buddy of mine shot some Winchester Ballistic Silver in his 308 Win. and the Chorograph was showing up to125 ft/sec difference in speed for the 10 rounds he went through. Also they are a lot slower than the reloads he made up.
Good luck with the Browning, mine out lasted 3 houses, 5 trucks, 2 horses and 5 computers.
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Old 09-13-2003, 01:27 AM
  #4  
Giant Nontypical
 
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Join Date: Feb 2003
Location: Saskatchewan Canada
Posts: 6,921
Default RE: 270 Abolt

I got the same gun minus the boss in my cabinet, great shooting gun. I use to shoot 130 gr ballistic tips for deer, was always pleased with accuracy and game performance.

Have fun and good luck this season.
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Old 09-13-2003, 07:41 AM
  #5  
Nontypical Buck
 
Join Date: Feb 2003
Location: Western Nebraska
Posts: 3,391
Default RE: 270 Abolt

ammo manufacturers rarely give accurate velocity listings on their ammo
quote by Danny45

You can say that again

2800 fps in a .270 with 130 grain bullets in a 20" barrel is about as good as you' ll get. The light magnums might hit 3000 but 2800 will do the job and you' ll never miss the difference. Don' t get too hung up on the velocity.
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Old 09-14-2003, 07:33 AM
  #6  
Nontypical Buck
 
Join Date: Feb 2003
Location: Pine Hill Alabama USA
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Default RE: 270 Abolt

Just Curious I have heard some people complain about how loud the boss system makes these guns. Have you found it to be of any concern or is the problem overstated? I am going to get a Browning A-bolt but I am still on the fence as to whether or not to get one with the boss system.
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Old 09-14-2003, 08:35 AM
  #7  
 
Join Date: Feb 2003
Location: LOUISVILLE KY. USA
Posts: 135
Default RE: 270 Abolt

I don' t own a rifle with the boss system on it but was in the same field when a friend shot his and the muzzle blast was very uncomfortable for all that were there. I have a Raging Bull that is ported and it also is very loud but not as loud as his 30-06 was. Just remember to keep hearing protection on if you buy a rifle with the Boss.
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Old 09-14-2003, 09:01 AM
  #8  
Nontypical Buck
 
Join Date: Feb 2003
Location: Western Nebraska
Posts: 3,391
Default RE: 270 Abolt

Regarding the boss system: If you' re a serious varminter, it might help you. Other than that it' s my opinion that it' s a great marketing tool. The A-bolt will normally shoot far better than acceptable groups without the boss and the extra margin of accuracy you can achieve with the boss is not usable in the field.

All the data shows that the boss actually works...it actually improves accuracy. However is it useful to you?

If it took 6" groups to 1" groups at 100 yards I' d say get it. But it doesn' t do that.....it takes 1 1/4" groups to .75" groups. 1 1/4" groups is 100% acceptable for any hunting of big game I' ve ever done and will ever do in my lifetime.

It' s your money.....have at it!!
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Old 09-14-2003, 09:23 AM
  #9  
 
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 1,051
Default RE: 270 Abolt

You can normally get the CR BOSS also at no extra charge. The BOSS system is very much worth it. It will improve your groups, but more than that, it will do it with all ammo. No more worrying about getting the same lot number of ammo etc. Just practice with it before season, tune the BOSS, and you' re good to go. It' s also great for using heavier bullets. If you were getting the 30.06, and say the rifle really liked the 150 grain bullets, but nothing heavier, the BOSS would make the 220 grain bullets shoot like the 150' s and you could then use them for Elk, Bear, Moose, etc. The CR BOSS is not ported. It gives you the tuning benefits without the noise. And YES!!! The standard BOSS is very, very LOUD!!!!
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Old 09-14-2003, 09:42 AM
  #10  
Giant Nontypical
 
Join Date: Feb 2003
Location: fort mcmurray alberta canada
Posts: 5,667
Default RE: 270 Abolt

I did own one rifle with the boss.It will optimize each load but that does not mean that it will shoot all loads equally.Some loads will still shoot much better than others reguardless of the boss.Overall I find that I am able to get just as good or better accuracy with load development in non boss rifles than with the boss.The boss on my rifle also came loose several times and finally had to be loc-tited in place.As well the boss equipped rifles have barrels shorter by 2" to compensate for the length of the boss and therefore produce less velocity than non boss equipped rifles.As I said I did own one rifle with the boss but I will not own another.
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