I've been searching pretty hard to see if there is load data out there for N133 & 75 ELD's (and 62 ELD-VT's) and for whatever I have not been able to find any. I know the 62 ELD-VT is a pretty new bullet but the 75's have been around for awhile. I have not been able to get my hands on 8208 or 4895. Ramshot Tac yielded some pretty huge spreads (ES's around 100 & SD's in the 40's) in Velocity but decent groups (around 1 MOA). I was able to get my hands on some VV N133 and tried to use some data I found with Benchmark powder to get started.
I will preface this with the fact that I am running an 18" - 7 Twist Proof Barrel chambered for the 75 ELD to be about .020 off the lands at 2.550 COAL.
I shot the 62 ELD-VT at a COAL of 2.517 (seated so the Boat-Tail sits at the Neck-Shoulder Junction)
5 Shot Groups
22.0 Gr. N133 AVG. Vel. - 2750 FPS (No Pressure)
22.5 Gr. " " - 2805 FPS (No Pressure)
23.0 Gr. " " - 2870 FPS (No Pressure)
None of these Yielded anything great, 22.5 gave me just inside a 1 MOA group. I chalked that up to possibly be jumping them way too far on account of my chamber being cut for the 75's.
The 75's yielded me some better results.
75 ELDM - COAL of 2.550 - 10 Round Groups
21.8 Gr. N133 AVG. Vel. - 2650 FPS (No Pressure)
22.0 " " - 2670 FPS (No Pressure)
22.2 " " - 2700 FPS (No Pressure - Best Group 3/4 MOA or better)
22.4 " " - 2730 FPS (No Pressure)
I am going to turn up the charge with the 75 ELD's to see where I find pressure and will update once I do.
All groups shot with N133 gave me what I consider to be acceptable SD's considering this cartridge and the purpose of the rifle.
If anyone has an experience with N133 and 75 ELDS in a Bolt Rifle any information would be appreciated.
I will preface this with the fact that I am running an 18" - 7 Twist Proof Barrel chambered for the 75 ELD to be about .020 off the lands at 2.550 COAL.
I shot the 62 ELD-VT at a COAL of 2.517 (seated so the Boat-Tail sits at the Neck-Shoulder Junction)
5 Shot Groups
22.0 Gr. N133 AVG. Vel. - 2750 FPS (No Pressure)
22.5 Gr. " " - 2805 FPS (No Pressure)
23.0 Gr. " " - 2870 FPS (No Pressure)
None of these Yielded anything great, 22.5 gave me just inside a 1 MOA group. I chalked that up to possibly be jumping them way too far on account of my chamber being cut for the 75's.
The 75's yielded me some better results.
75 ELDM - COAL of 2.550 - 10 Round Groups
21.8 Gr. N133 AVG. Vel. - 2650 FPS (No Pressure)
22.0 " " - 2670 FPS (No Pressure)
22.2 " " - 2700 FPS (No Pressure - Best Group 3/4 MOA or better)
22.4 " " - 2730 FPS (No Pressure)
I am going to turn up the charge with the 75 ELD's to see where I find pressure and will update once I do.
All groups shot with N133 gave me what I consider to be acceptable SD's considering this cartridge and the purpose of the rifle.
If anyone has an experience with N133 and 75 ELDS in a Bolt Rifle any information would be appreciated.
