Big Squeeze
Handloader
- May 29, 2007
- 828
- 0
Finally found some RL17 at my dealer the other day.
Cruised different sites looking for a previous guinea pig who by chance, posted a load using the RL17 and a Berger (hunting) VLD combo that I could duplicate.
Found one on the "reloadersnest" site (load # 5506 at the bottom)
Cartridge..............................300 WSM
Posters rifle...........................M/70 w 24" barrel
Bullet....................................155 gr Berger VLD (hunting)
Powder..................................RL 17
Charge..................................69 gr.
COAL....................................2.88"
Primer...................................Fed mag
Case.....................................Win
His velocity............................3380 fps
His grouping...........................0.600 and 0.700" (don`t recall exactly)
Components and charge are the same, except for the primer, rifle and barrel length.............. Here are my results.
Rifle......................................Ruger Frontier (300 WSM)
Barrel length..........................16.5"
Scope....................................1.5-5x20 VX111
Primer...................................WLRM
COAL.....................................2.88"
Velocity.................................3234 fps (chrony 8' from muzzle)
Group....................................0.784" (3 shot) OD
Difference was 146 fps, 19.46 fps (per inch), or a minus 4.32% in overall velocity vs the 24" barrel.
Started at 65 gr and worked up to 69 gr. No sticky bolt lift, no ejection marks or primer issues, but is very near max. No need to go any further.
Alliant`s site shows 69.3 grs as max for RL17 using the 150 gr Speer @ about 3345 fps from a 24" barrel.
Considering the shorter barrel, I am very impressed with this RL 17/ 155 gr VLD combo result. Previous best was 3118 fps using a 150 gr SST.
With my rifle anyway, a very good increase.
Cruised different sites looking for a previous guinea pig who by chance, posted a load using the RL17 and a Berger (hunting) VLD combo that I could duplicate.
Found one on the "reloadersnest" site (load # 5506 at the bottom)
Cartridge..............................300 WSM
Posters rifle...........................M/70 w 24" barrel
Bullet....................................155 gr Berger VLD (hunting)
Powder..................................RL 17
Charge..................................69 gr.
COAL....................................2.88"
Primer...................................Fed mag
Case.....................................Win
His velocity............................3380 fps
His grouping...........................0.600 and 0.700" (don`t recall exactly)
Components and charge are the same, except for the primer, rifle and barrel length.............. Here are my results.
Rifle......................................Ruger Frontier (300 WSM)
Barrel length..........................16.5"
Scope....................................1.5-5x20 VX111
Primer...................................WLRM
COAL.....................................2.88"
Velocity.................................3234 fps (chrony 8' from muzzle)
Group....................................0.784" (3 shot) OD
Difference was 146 fps, 19.46 fps (per inch), or a minus 4.32% in overall velocity vs the 24" barrel.
Started at 65 gr and worked up to 69 gr. No sticky bolt lift, no ejection marks or primer issues, but is very near max. No need to go any further.
Alliant`s site shows 69.3 grs as max for RL17 using the 150 gr Speer @ about 3345 fps from a 24" barrel.
Considering the shorter barrel, I am very impressed with this RL 17/ 155 gr VLD combo result. Previous best was 3118 fps using a 150 gr SST.
With my rifle anyway, a very good increase.