Home Forums Hunting & Shooting Long Range Hunting 270wsm/150ABLR

doesn't the bc vary depending on the speed the bullets are pushed at?? also none of those bullets have the hybrid bullet design which further ads to the ballistic limits they are able to push the bullet design to. look at all bergers hybrid designs they all have a little better BC than regular vld bullets. with the length of the 165 matrix and the 150 lrab being about the same I would image the bc would be close. anyone know what the actual number is on the matrix 165??

Anyone heard if berger is still going to be producing the 170 grainer for the 270,last i heard it was almost done its testing phase. At the time it was futher in development then the 190 grain for the 7mm.

I think because Berger hired him. I have confirmed two of his numbers out to 500 yards - for the Nosler Partitions in .308" 200gr and .284" 175gr. Nosler says those 175gr bullets have a BC of .519 when it seems to really be in the .45 range. All the more reason to go out and test + practice instead of believing ballistics charts.

Edit - I shouldn't say "confirmed" because I didn't measure velocities at range. I measured my muzzle velocities with a 35P and then used a GPS to confirm altitude. I used a range finder to confirm various distances to targets. I then used a ballistics program to calculate clicks required to have impact at point of aim. When using Litz's BC numbers the calculations were pretty much spot on to what I was seeing at the range.

Cummins real world bc of the 165 matrix is about 640.
I shot the 150ablr at 500 a few nights ago and was very happy with results. Grouped very well. I plan to load some more and test the bc at longer ranges and try to shoot through a chrony at distance.

************ 150 ABLR Part II *************

Well [bleep] and save matches. Went out for round 2 tonight and I'd say results were impressive. Tried to duplicate everything I did the first time out for the most part. I ran the 58.0gr H4831SC load at 3.375 over the chrono again and averaged 2817fps (2781 previously). The brass I used previously was prepped with an older set of RCBS dies. The stuff I shot tonight was done with a new set of Reddings, everything neck sized. I noticed a bit more neck tension when seating this time around, so I reckon that could account for the increase in velocity. The 58.0gr group I shot last week had the 2 together and one jumper. I took another 3 tonight that were 0.020 shorter and I'm glad I did. Those are 3/4" squares which are ideal with 6x:


I then ran the 58.0gr 3.375 load at 502 yards (Leica 1200). Last go round I just tried to run the elevation dial to compensate for drop. Friction adjustments and a slide ring ain't making bacon. Instead, I set up a 6' stand and made no changes to the scope (M8 6x42) and figured I'd let the chips fall where they may:


I also ran a plumb bob from the center of the target down the entire board, as it sat a little wonky. The tape you see is the same dangle as the target sat at the 502 yard line.

Group sucked ass, but I Machine Gun Kelly'ed 5 rounds. Tape measure is stuck in the middle of the bull.


Ran the Ballistic App on my iPhone (yes, I hear you sis [inside joke]) and actually used the locator job and the whole 9 yards with the 2817 velocity (I only had 3 of the 3.355's, these were 3.375) and holy schit, this is what it puked out:



I don't believe a damn bit of it, but like I said...[bleep] and save matches.

Wow, that's wild.

Very cool!

If I am reading your post correctly....

I just ran JBM with your load, BC/speed/weight.

JBM says....500 yds
-48.9 -9.3 2122.0

Your load 502 yds
-48.3 -9.2 2131.0


Appears that Nosler's BC is on the money!

And that is what I was hoping for.

Who'da thunk it?


16bore why don't you believe it? You just proved it!

I will bet that bullet has another 100 fps in it from a 22" tube...likely RL25 will bring it out of a 22" barrel. Think I will get some and try them in a 9 twist Brux..

Wonder how 16bore's numbers would compare to a high BC 6.5 140 from a 6,5/06?

Tell you what Bob, Berger will go out of its way to make sure we un-thunk it.

I figured there was alot of skepticism, but I'd hate to be Noz and think I'd knowingly mis-publish bad info and get caught, not good for their reputation.

1500 lbs at 500 yds is nothing to sneeze at...

So those doing fine in a 10 twist?

I would call that a pretty good group, for 500 yards with a 6X scope.

16Bore- Thank you for the follow up. I have only been able to shoot them at 500 once so far but they were very accurate and less drop than my 150VLD. Have you considered shooting them thru the chrony at distance to see the velocity at say 300 and check that vs the drop chart data??

So after reading over this last night I went right on the 'net to find some... whoa! Can't find any! Anybody seen any available?

SU should be interesting.

Move over Berger. mtmuley

Thank you Aviator

Thanks for the reports on the 150 ABLR.

I do have to admit that I'm anxious for results beyond 500 yards though. 500 yards seems too close to show real problems.

I had the 140gr NAB match advertised BC out to 800 yards with a T3 270 Win. This bullet was dead-nutz vs calculated drop using JBM. Same rifle shot the 140gr Horn BTSP per advertised BC to 500 yards, but was way off at 800 yards. In other words, 500 yards didn't tell the whole story for the BTSP. Maybe it didn't stabilize as well as the NAB? I don't know.

Similar thing happened just recently with a BAR in 270 Win. Rifle shoots handloads and factory ammo under 1 MOA. Its a freaking tackdriver, regardless of action type. With 140gr NAB it matches the drop chart at 500 yards for advertised BC. At 800 yards it was more than a foot low. Fiddled with chart to match actual and nothing lined up.

I'm excited about the 150 ABLR, but would like to see confirmation of BC with tests beyond 500y.

Thanks again for the reports, this is still good stuff.

Jason

Ive been creeping along this thread since it started and i have been liking what i see. As a dwindling .270 fan I think this might have just put some beat back in my heart.

I have been patiently waiting for these to come out in 7mm(unless there already out and i just cant find them) to try in both my rem mag and wsm.

Has anyone done any penetration tests with photos of recovered bullets yet?

My question is not just for Jason -
I am wondering if you guys are using the G1 versus G7 BC in your ballistic programs and if so why? I thought the G7 model was better predictor of drops for boattail bullets at long range -600 yds plus distances.

I am glad to to see the bullets are shooting well. I will have to look for some to try in my rifles. Thanks!