270win 150gr options

[16Bore]

Just remember BC is compromised with slower twists.

 

[dotman]

Yeah I fully expect to have a lower BC but a BC over .6 is pretty exciting. From what I have researched the Matrix 165's have had a calculated G1 BC of .636 out of a comparable 1:10 twist 270 win, so the Berger should be close if not a tad better.

Berger has listed the BC at various velocities in their press release, pretty impressive IMO.

http://www.bergerbullets.com/introducing-the-berger-270-caliber-170-grain-eol-elite-hunter/


From what I have gathered the G1 of the Nosler LRAB is .543 based on testing, the Matrix is .636 and I'm going to guess the Berger will be around a .64+.

So not too shabby of options for a .277 cal which historically was stuck in the 130-140gr bullet class.

I'm already jaded on the Nosler LRAB as initial tests by others have shown it to not hold together well at all but be very accurate. I'll be using the best load from the three on a bear hunt in CO this fall and I'm really hoping for the added energy of either the Matrix or Berger and hope both test very well.

 

[GKPrice]

Yeah I fully expect to have a lower BC but a BC over .6 is pretty exciting. From what I have researched the Matrix 165's have had a calculated G1 BC of .636 out of a comparable 1:10 twist 270 win, so the Berger should be close if not a tad better.

Berger has listed the BC at various velocities in their press release, pretty impressive IMO.

http://www.bergerbullets.com/introducing-the-berger-270-caliber-170-grain-eol-elite-hunter/


From what I have gathered the G1 of the Nosler LRAB is .543 based on testing, the Matrix is .636 and I'm going to guess the Berger will be around a .64+.

So not too shabby of options for a .277 cal which historically was stuck in the 130-140gr bullet class.

I'm already jaded on the Nosler LRAB as initial tests by others have shown it to not hold together well at all but be very accurate. I'll be using the best load from the three on a bear hunt in CO this fall and I'm really hoping for the added energy of either the Matrix or Berger and hope both test very well.

this is just for conversation's sake ... Nosler had some issues with the regular Accubonds at first and quickly corrected and overcame them - I think with any bullet there's a race to get it to market, especially a groundbreaking bullet, and I'm doubting that Nosler is any more or less "guilty' than any other of this, they've just created a higher bar for themselves - Bergers are "supposed to blow up" !

 

[GKPrice]

A little light reading. Don't let BC run your life. Wind is everything, but consider this:

7mm 162gr Amax (.625), 3,000 FPS = 13" drift at 500.
270 140gr BTSP (.486), 2940 FPS = 18" drift at 500.

Ok, so 5" difference. Looks "huge", but if you and I are side by side, we KNOW we've got 10 mph L/R, and our drops are perfect. Who do you think rings the bell?

We both do.

Now lets say, we "think" it's somewhere between 10 - 15 mph and hold the same. Now the 162 "advantage" is 2" drift. Who rings the bell?

We both do.

But how? Because for 15 mph the 162 guy is going to hold 20" and the 140 guy is going to hold 27". So if you're not reading right and holding right, it won't matter. So there is a margin for error, and yes higher BC shrinks it, but I don't think it's the be all, end all if you're reading things right.

And I've yet to meet anyone that can call a 5mph difference.

a very succinct and down to earth explanation - Thank you 16Bore

 

[dotman]

this is just for conversation's sake ... Nosler had some issues with the regular Accubonds at first and quickly corrected and overcame them - I think with any bullet there's a race to get it to market, especially a groundbreaking bullet, and I'm doubting that Nosler is any more or less "guilty' than any other of this, they've just created a higher bar for themselves - Bergers are "supposed to blow up" !

The good thing is I have plenty of the Nosler LRAB's to really test them out.

 

[GKPrice]

The good thing is I have plenty of the Nosler LRAB's to really test them out.

Accurate B.C.'s and "numbers" not withstanding I've found, on my own limited basis, that actually shooting them at distance sometimes tells an entirely different and enlightenling story (and I'm not the first one by a LONG shot to realize it)

 

[dotman]

Yeah I'll compare the three out of a normal avg every day hunters setup. I have the ability to shoot out to 500, not longrange for some but long for me. I think it will be nice to know how these three options workout for the distances many many shoot. I know a 140 will kill but it would be nice to have sone heavier options.

 

[GKPrice]

Yeah I'll compare the three out of a normal avg every day hunters setup. I have the ability to shoot out to 500, not longrange for some but long for me. I think it will be nice to know how these three options workout for the distances many many shoot. I know a 140 will kill but it would be nice to have sone heavier options.

I shot an "average nice" bull at 504 yards (ranged) one year with the 338 Win Mag/Leupold 6x42 wide duplex and 200 gr Accubonds with that pathetic .414 BC, I've never seen a bull elk go down any harder before or since and it hit where I was hoping it would - I agree, 500 is plenty long and the only reason I stopped there is because it was shear further on, the bull never knew I was there, few would at that distance

 

[16Bore]

ABLR's shot fine for me. When I ran them to 500, I didn't dial, just held on a 6' target and measured the the group from the POA to POI. At the velocity I was running, a .625 BC would be 47.9" drop. A .543 BC would be 49.9". The 4' mark is about 1/2" below the top bullet hole.

Considering its a '69 PF Model 70 and a 6X scope, I'll take it....

 

[dotman]

Not bad at all! I've heard they are very accurate. Have you tried RL26, supposedly out of a 24" tube it'll push them just over 3k! Can't wait to get to testing, hoping to get out in the next week.

I'll be testing both 7828ssc and RL26 with all three bullets.

 

[GKPrice]

ABLR's shot fine for me. When I ran them to 500, I didn't dial, just held on a 6' target and measured the the group from the POA to POI. At the velocity I was running, a .625 BC would be 47.9" drop. A .543 BC would be 49.9". The 4' mark is about 1/2" below the top bullet hole.

Considering its a '69 PF Model 70 and a 6X scope, I'll take it....

the proof is on the target

 

[coop2424]

Where are you guys finding the LRAB? I have not been able to find them.

 

[16Bore]

Not bad at all! I've heard they are very accurate. Have you tried RL26, supposedly out of a 24" tube it'll push them just over 3k! Can't wait to get to testing, hoping to get out in the next week.

I'll be testing both 7828ssc and RL26 with all three bullets.

I saw on Accurate Reloading a guy was getting some numbers like that with Bergers, but mine is 22". Fun while it lasted, never spilled blood with them but lotsa steel. Stopped trying to make it a 7 Mag and bought one instead. Took a different route with this rig, sorta along the lines of the "one and done" mantra. It's now sitting in it's 7th stock and lord knows how many scopes later, with an old VXII 3x9 that my brother bought in '89 by saving his lunch money in High School. It'll get nothing but factory fodder now, fingers crossed on Hornady 140 BTSP's. If they roll better than 3/4", I'll stash a case be done with it. Sort of a preemptive back up plan. The .486 BC at 2,940 puts me an inch flatter than the ABLR's and I'll suffer another 1-1/2" drift at 500 yards.

Odds are shit will die.

Moral of the story: All the R&D makes you much more aware of whats doing what, a better shot, numbers don't lie, and it ain't really complicated.

Roll on.......

 

[dotman]

Haha, well yeah that is very true but where's the fun in that

 

[dotman]

Where are you guys finding the LRAB? I have not been able to find them.

They are very hard to find, I think I saw some for sale in the LRH classifieds.

 

[JustOneMoreShot]

I sold a few boxes a while back on RS after I worked up several loads with them and some Bergers prior to my AK Dall sheep hunt. I went with the Berger bullets out of my Tikka 270WSM and figured that someone else could use the Nosler ABLR bullets so sent them along.

 

[dotman]

Finally I was able to get some time out at the range! I loaded up 11rds for the Berger 170gr EOL, 165gr Matrix VLD and 150gr Nosler LRAB.

I'm going to hold off posting pictures until I'm done testing but today's test was ladder testing and working up to max load to see where pressure signs are since ther is limited data on these higher grain bullets, well I'm happy to report at the top of my testing I have very very slight primer flattening with all three rounds. So I think I'm not at the crazy max but at the safe max.

I conducted the Audette Ladder test method and what I found is that with the Bergers in the lower half of my powder loads I did have a stability issue but in the top half and at a very nice barrel node stability was fine. Both the Mateix and Nosler had zero stability issues. So now I'm going to start with 3 5round loads and very my seating depts. once I'm done I'll put everything together in a new thread.

My rifle is a 270win Forbes 24B with a 1:10 twist barrel. I performed the ladder testing at 300 yards. I'm pretty excited with both the Nosler and Berger, they both have a nice node area but the matrix I believe will take more work to fine tune as it did not reveal a node cluster as defined as the other two in my opinion.

Hopefully I'll have it all done the end of this month.

 

[coop2424]

Good deal can't wait to see your results.. I just found some 150 LRAB so plan on working on a load this weekend with them.. Hopefully I can get them dialed in..