I have built 3 of these and none have been fired as of yet, does any one have some experence with this round. How well do they shoot on factory rounds, and any loading data you have.

SBB:
Well just so happens that I went out and shot my new M70 Coyote 270WSM yesterday! A good friend and I both bought Coyotes in 270WSM so we were finally able to go out and see what these rifles will do, I bought 130gr Ballistic tips and he bought 150gr Power Points. I've read where a couple guys got sub-MOA out of the box using the 130gr Ballistic tips, so I was already to be impressed! Well it didn't happen. I sure didn't get sub-MOA out of the box but a very acceptable 1 1/4" to 1 1/2" (First twenty rounds through the gun!) 3-shot groups and scrubbed spotless between each group and 4 rounds for the last group with average velocity of 3212fps to 3240fps.
My partner using the 150 power-points shot better groups! (He always shoots better than I do off the bench!) he stayed right under 1 1/4" and one was just a hair over 1" but the really amazing thing was his velocity didn't vary more that 5fps, 3068fps dang near every time I looked at the chronograph with factory ammo! We did try a couple hand loads but with so little data available at this time, (We don't have the newest Sierra, Hornady, or Nosler books yet.) Nosler does have thier data on thier web site though. So we just kind of made educated guesses with our loads and the distance off the lands was just what we have had good results in previous guns. (Seated .0010 to .0012" off the lands) here's some of the loads we tried;
63gr IMR4350 130gr Sierra BT- 3210fps average
64gr IMR4350 " " - 3255fps average
59.5gr " 140gr " - 2972fps average
60gr IMR4831 140gr " - 2872fps average
The usual disclaimer applies as these are not published loads, reduce by 2 or 3 grains and work up. We observed no excessive pressure signs in any of these loads.

Starting Big Bore;
Let me know how you do, and what data you come up with, Hodgdon has some data at thier web site also. I may not be on here for awhile, leaving for Wyoming in a few days! YaHoo! and won't be back for a couple weeks! Lets stay in touch!
Good Luck!
Here's my E-mail-- danl@inreach.com

I called Sierra the other day got some Data for the powders I had on hand: These and minimum and Maximum loads.

270 WSM

130 GRAIN SIERRA BOATAIL

IMR4350- 58.7grs. ==3000fps ----- 62.7grs.==3200fps.

RELOADER 19- 60.5grs. =3000fps. ---67.4grs.==3300fps.

140 GRAIN SIERRA BOATAIL

IMR4350- 56.6grs. ==2900fps --- 61grs. ==3100fps

RELOADER 19- 60grs. ==2900fps ---64grs. ==3100fps.

RELOADER22- 61grs. ==2900fps. ---64.9grs. ==3100fps

150 GRAIN SIERRA BOATAIL

IMR4350- 53.2grs. == 2700fps. ----61grs. == 2900fps

RELOADER 19- 55.8gr=2700fps62.4grs.=2900fps.


RELOADER 22 59grs. = 2700fps - 63.3grs = 2900fps.

Hopes this helps!
MM

[ 10-26-2002, 08:36: Message edited by: Marsh Mule ]