26 August 2002, 07:47
mranch.308 Bellm Testing!
Finally, I'm going out right now, this minute and put some of these loads over a chronograph! I have 6 different loads with Hornady's 130gr. ssp Bullets.
I'll report back later today with results.
Bob
26 August 2002, 09:03
Rich JakeBob
I will be waiting on your results.
Rich Jake
26 August 2002, 09:28
mranchOk, Here goes with the report. I was testing mainly for velocity and not so much accuracy. My target was at 75 yards.
First load -- 47gr. Win 760, Horn. 130 SSP. .005 off the rifling. Avg. Vel was 2249, Group was 1.5in.
Second Load -- 47.5 gr. Win 760, Horn. 130gr. SSP
.005 off the rifling. Avg. Vel. 2284 Group was a little better then first load.
Third Load -- 49 gr. Win 760, Horn. 130gr. SSP .005 off the rifling. Avg. Vel. 2378 Group was about .75in.
Fourth and last load -- 49.5gr. Win 760, Horn.130gr.SSP .005 off the rifling. Avg. Vel. 2429. Group about the same as last load, .75
All loads were fired in 5 shoot groups.
The last load I noticed some flattening of the primers, not much but some.
I guess 49.5grs. is about it for my barrel, I had some loads all the way up to 51grs but don't think I'll try them.
I think I'll play with seating depth and back off a little on the powder.
I'm going to do that now and hopefully fire a few more groups before the day is over!!
Bob
26 August 2002, 09:31
Magnum MikeSounds good for 5 shot groups!!
![[Wink]](images/icons/wink.gif)
26 August 2002, 09:33
Rich JakeSounds Good Bob. Good luck With the 308 Bellm. I like the round very Much. I have a quick question for you. Is that a Custom barrel, or a rechamber? If it is a rechamber was it a super 14 or A hunter barrel?
Rich Jake
26 August 2002, 10:35
mranchGuys, The more I shoot this Barrel the more I really like it
Rich, It is a rechamber Super 14. I had it Fire lapped and a new Crown. It's a 1:14 twist. I really like it!! I think I already mentioned that though.
I did get some more loaded and moved the bullet out some. I did 5 at .003 of the rifling and 5 at .002 off. both loads were 49.5grs. Win 760. I'm not sure what happened but the groups opened up a little. I guess maybe I need to move the Bullet the other direction off the rifling? Maybe 6, 8 or 10 thousandths off the rifling? Or maybe just leave it alone? Naw!!!
Bob
26 August 2002, 12:20
Rich JakeBob
You might of had it in the right spot in the first place. If you really want to try it just to see, seat it in a little more than your original just don't do it on your top weight load. See if it produces any improvement & if it is safe to go to the higher weight powder charges. I think that the 3/4 " group at 100 mark is excellent.
Rich Jake
27 August 2002, 05:29
KTS1Bob,
Do you like that bbl. or do you want to just ship it over here to me? Sounds like its giving you alot of trouble
Wes
27 August 2002, 05:55
mranchWes, I think I'll keep it. I'd sure hate to have someone else put up with it!
![[Razz]](images/icons/tongue.gif)
Besides, I'm kinda getting used to it, and the Weaver Scope.
Bob
27 August 2002, 09:21
KTS1Hey that weaver aint too bad? Sure is a tiny thing tho aint it?