190grSMK/Re22 in .300WSM advice requested

RuffHewn

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Joined
May 14, 2003
Messages
99
Location
Alabama
Chronograph died in it's sleep over the past few months, while my rifle was being rebarreled. I need a charge range to work up to while I research a suitable replacement. Any suggestions would be appreciated.

My goal is 2950-2990 fps from my 26" barrel.

My new Mike Rock barrel seems to really like Re22 as every load with the exception of starting charge have been sub .5 moa. Last load tested was 67.0 gr with no pressure on primer and case miked .552".

My new barrel has no freebore and 2.864" COL with the SMK190 is to the lands. My last barrel was set up for Barnes X so I could seat the SMKs to 2.96" COL.

Please post if your data is for plain or molyed 190s.

Thanks for any help.
 

MontanaMarine

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Joined
Dec 4, 2001
Messages
348
Location
Canyon Ferry, MT
Nosler #5 shows the following MAXIMUM loads for RL22 in the 300WSM, 26" 1-10twist barrel:

180gr bullets:
69gr, 3057fps

200gr bullets:
67gr, 2944fps

MM
 

RuffHewn

Well-Known Member
Joined
May 14, 2003
Messages
99
Location
Alabama
Thanks, Montana Marine. The Nosler data is close to the 68.5 gr a Sierra tech suggested for the molyed MK190s I shoot.

Semper Fi
 

MontanaMarine

Well-Known Member
Joined
Dec 4, 2001
Messages
348
Location
Canyon Ferry, MT
Ruff,

I'm guessing you will have no trouble reaching or exceeding your velocity goal. I shoot the 190SMK moly in my 26" 30-06. 62gr RL22 yields avg 2907 fps. Accuracy consistently sub MOA.

Semper Fi! MM
 

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