6.5-300 Wby 130gr Hornady CX - AR2225 (Retumbo) V 127gr LRX

[jpsauer88]

6.5-300WBY results

Work up load, your results may vary, follow correct loading procedures. Being a new projectile line (newish), thought it may help people. YES, i did do a Barnes LRX 127gr comparison.

Rifle: Weatherby Mk5 Weathermark (26" barrel, no brake)
Brass: Weatherby
Primer: Winchester Magnum LR
Powder: Retumbo / AR2225
Projectile: Hornady CX 130 grain

Chrono - magneto speed v3
130CX
72 - 3167
73 - 3200
74 - 3212
74.5 - 3236
75 - 3203, 3194, 3179 (12.5mm)
75.5 - 3233, 3248, 3212 (13mm)
76 - 3256, 3242, 3232 (10mm)
76.5 - 3280, 3254, 3259 (8mm group!)
77 - 3296, 3286, 3271 (15mm) (Mild crater)
77.5 - 3305, 3332, 3325 (25mm) (PRIMER CRATER) (barrel was hot to touch - sorry guys patience was running thin having to wait so long every 3 shots)

As my usual experience, slower than the LRX (barnes always gives me the most speed and least pressure)
Below: Same as above except 127 gr LRX barnes bullet used
127 LRX
76 - 3298, 3270, 3297
77.5 - 3388, 3370, 3372 (12mm group) No crater.

Book max is higher, didnt want to go there.
BOOX MAX ADI - 3343FPS - 78.8grains

Just hope it helps someone, i always liked this information before I had a chorno so I could estimate velocity. Velocity and pressure will vary from rifle to rifle, some people just like the info to get an idea.

recoil was mild imo, like a 3006. Having said that my rifle scoped weighs 4.7kg.

ALWAYS work up your load, your load is your responsibility, i take no responsibility for the information above.

CAUTION: The following post includes loading data. USE AT YOUR OWN RISK. Neither the writer, enoughgun, nor the staff of enoughgun assume any liability for any damage or injury resulting from use of this information