.260 MWS Semi-Auto 9 Twist Load - Anyone?

[03psd]

Finally getting my reloading bench set back up after almost 3 years and 3 moves. My stuff is strewn everywhere and I cannot find my notes. A little help would be greatly appreciated. I am looking for a starting load for a LMT MWS in .260 Remington. I searched this forum and didnt find much at all on 260 in gas guns. Mine also is a 9 twist so the heavies may be a no go. I also have to keep in mind COAL so they feed from a PMag.

Thanks in advance for your suggestions.

 

[03psd]

Re: .260 MWS Semi-Auto 9 Twist Load - Anyone?

Seriously? The only thread on the first 2 pages without a single reply. No wonder I couldnt find anything via the search tool. Are 260 gas guns that rare of a bird?

I ordered some 123 gr AMAX, 123 gr SMK, 107 gr SMK just based on what I have read about the 9 twist. If I cant get any feedback here I will just start at square 1 with the Sierra loading manual with some 4350, 4064, and some Varget.

 

[Unknown]

Re: .260 MWS Semi-Auto 9 Twist Load - Anyone?

My 260 isn't a gas gun, it is a bolt gun with an Obermeyer 1-8,75 twist. It shoots the Lapua 144 grain, Sierra 142 and 140 grain bullets just fine. But my tube is 27 inches long and I'm getting 2880 FPS.

 

[rrflyer]

Re: .260 MWS Semi-Auto 9 Twist Load - Anyone?

I shot the 142SMK with 4350 powder.

There was some slight pressures sign and It need and adjustable gas block but was very accurate.

 

[Pat M]

Re: .260 MWS Semi-Auto 9 Twist Load - Anyone?

I run the 142smk, 42.5gr h4350, adjustable gas to mellow it out. Still looking for a better load (dpms-24" bull)