Barnes TSX and Nosler Partition handloads
I recently handloaded some Barnes TSX 55 gr. and Nosler Partition 60 gr. bullets for AR .223
I used the online data from Accurate Arms powder as a loading guideline.
Both bullets were loaded into new Winchester brass with a Winchester small rifle primer.
The Barnes TSX-FB 55 gr. was seated to 2.183" OAL with 21.7 gr. of 2015 powder (max load is listed as 22 gr.)
The Nosler Partition was seated to 2.205" OAL with 21.2 gr. of 2015 powder (max load is listed as 21.5 gr.)
Each load was .3 gr. below the shown maximum for 2015 powder.
Both loads were loaded on a single stage press, power charges thrown one at a time, ect... each finished load measured for OAL.
I definitely preferred loading the Partition bullet. With the Partition bullet, I was able to use the Lee factory crimp die (like I'm use to doing with pistol bullets).
If I used the factory crimp die with the Barnes TSX it would seat the bullet deeper . I was frustrated not being able to use the factory crimp die; I had to resort to using the seating die to crimp. I experienced even more frustration trying to get that die to crimp, but not seat the bullet deeper and not crush the shoulder on the brass. I finally got some TSX bullets loaded that suited me, but I would not want to do it again.
I shot both bullets into water filled gallon jugs using a Stag 2T (1/9 twist).
The Barnes TSX won this contest; it penetrated to the back of the 4th jug splitting it, but staying in the 4th jug. The recovered bullet expanded to .47 and looked just like advertised.
The Nosler Partition also made it to the back of the 4th jug, but only made a little dent. The jacket had seperated from the lead core, lead core recovered in 3rd jug. The recovered jacket / bullet measured .40
I shot both loads over a chronograph (about 10' away) using the Stag 2T; I included a factory load for comparison (average for three shots)
Federal AE .223 Tactical 55 gr. FMJ @ 2,873 fps / 1,008# KE
Barnes TSX 55 gr. @ 2,684 fps / 880# KE
Nosler Partition 60 gr. @ 2,536 fps / 857# KE
I was disappointed with the chrono results for my handloads; I thought that I would be closer to factory velocities since I was just .3 gr. below maximum. However, I could tell that my handloads were not as hot as factory (when shooting) prior to this test; so, I expected them to deliver a little less velocity than the factory load.
The Accurate load data shows that the maximum loading produced these velocities:
2,966 fps with the Barnes TSX
2,872 fps with the Nosler Partition
However, the data also advises that the velocity published is for a 24'' barrel and if using a 16'' barrel then subtract 300 fps or 9%.
If I take away 300 fps then the velocity I obtained is about right.
Recovered bullets shown in photo.
I'm very likely going to pull the Partition bullets and add another .4 - .5 gr. of powder to them given the result I obtained; note, that would be .1 - .2 gr. over the maximum listed (I think it would be just fine given the result obtained).