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.308 Bellm Testing!

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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 Jake
Bob
I will be waiting on your results.
Rich Jake
26 August 2002, 09:28
mranch
Ok, 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 Mike
Sounds good for 5 shot groups!! [Wink]
26 August 2002, 09:33
Rich Jake
Sounds 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
mranch
Guys, The more I shoot this Barrel the more I really like it [Big Grin]
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 Jake
Bob
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
KTS1
Bob,
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 [Big Grin] [Big Grin] [Big Grin]

Wes
27 August 2002, 05:55
mranch
Wes, I think I'll keep it. I'd sure hate to have someone else put up with it! [Razz] Besides, I'm kinda getting used to it, and the Weaver Scope.

Bob
27 August 2002, 09:21
KTS1
Hey that weaver aint too bad? Sure is a tiny thing tho aint it?