Started some load development on a few high BC 308W loads light/heavy, to see how they compare.
There's not a lot of data out there for either of these 2 powders in 308.
This was just trying to find powder charges.
Maybe
@straightshooter1 would be willing to check these loads in Quick load for me.
For any one reading this. These loads were built in GRT for my barrel, brass, action. I have a lot off data with these powders that has been worked up to in my rifle.
Do not assume these will be safe in your gun. GRT is often pretty far off in their speed predictions. Some hammer forged barrels (Tika/Ruger) are 150fps slower for same length & will pressure out much sooner.
They are all safe according to GRT in my rifle, but up near top end. That said GRT doesn't always agree with quick load from what I've seen.
26" PVA Osprey barrel 10T
Berger 200.2X (.328 G7) Bullet oal 1.508" all rounds loaded @ 2.960" oal/ 2.175" BTO using Hornady comparator. Jump was -.064
RWS 3 x fired LRP brass. Fired H20 avg 55.62 measured on FX120
GM215 magnum primers
Alliant RL15.5
42.1 - 2522 - SD 8.7
42.4 - 2532 - SD 4.4
42.7 - 2547 - SD 4.0 * Shot best .7 primer slightly flat/ no cratering & no other pressure signs. Seating depth @ this charge.
Per GRT I should be able to reach 2599 with RL15.5 at that load length.
Lever Evolution only shot 1 charge. Same brass & primer as above.
43.4 x 6 = 2560 - SD3.6 ES 9.1
No pressure signs with this load. Per GRT node #5 is 2618 & within pmax limit
re-shoot 43.4 with seating depth test.
For the lightweight high BC option.
Warner Flatline 160 (G7 .278) bullet oal 1.390" All rounds loaded 2.954" oal (-.018 jump) 2.243 BTO
Norma virgin brass. Once fired in this chamber H20 avg 55.89
GM215 Mag primers
Lever Evolution
47.4 - 3002 - SD 5.8 / .85" group / GRT prediction 2942fps with nodes at 2942 & 2989
47.8 - 3024 - SD 10.4 / .93" group
48.2 - 3055 - SD15.1/ group opened & showing pressure (flat primers). GRT prediction 2989
47.4 shot best & I'd like to stay under max pressure for Lever since it's more temp sensitive.
Will try seating depth test with these at 47.3gr @ -.020, -.040, -.060, & -.080
Attached is the Warner 160FL load data sheet. Lever is not on the list, but CFE223 is. IME lever is a little more forgiving on top end loads than CFE223. Lever usually gives a little more velocity, other wise they are similar.
It's also noteworthy that Lever, contrary to it's reputation, burns super clean in all the above 308 loads.