srose

I bought a Winchester Model 70 Stealth in 25 WSSM and really like it. I've so far only shot Sierra 115 BT in it and am still working up loads. So Reloder 19 seems to be the best powder. I have gotten 3020 fps with it and bolt thrust is not a problem. XMR4350 has given highest velocity at 3068 fps. However bolt was alittle hard to open. I have noticed with these short mags that bolt thrust is going to be a problem with most loads that are near max. I think the 6.5 WSSM would be better because of bullet availabiltiy.

If the 700 PSS has a 1-9 twist it should shoot 77 grain Sierra MK. I have a CZ 527 Varmint with a 1-9 twist and it shoots the 77 grain great. You might want to look at the CZ as its a nice rifle and is alot lighter than the 700. Sam NC

One other thing you need a #31 drill for 6-48 tap. Also if you can find a left hand drill it will help in getting out broken screw. When the drill bites it will spin out old screw.

Thread size is 6-48. Brownell's has taps.

The 308 is one of the best cartridges ever. The 7mm08 is also great. I have shot both alot and I think the 7mm08 has some advantages. Better BC for the same velocity, you can use same cheap brass and if you use 308 brass for making 7mm08 cases you have a thick neck that can be turned to fit chamber of any rifle. I used 162 grain Hornaday match bullets in my 7mm08 with a case full of H414. Didn't have a chrono at time so don't know how fast it was going. This load shot great. I have just gotten hooked on this long range shooting and am still learning. Bought a Winchester Coyote in 7mm WSM to try. I think this cartridge has alot to offer. A 168 grain at 2900 fps shoots great and is very flat shooting. Bullets for the 7mm are getting better and more weights are available. Its not quite as good as the 6.5 in BC or in number of bullets to try. One big advantage to the 7mm08 or 7mmWSM is you can buy a good rifle off the shelf without having to build one.