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Re: 300 grain bullet tests
Posted:
Sun Aug 09, 2009 9:10 pmby gunnut
Just a thought! This side crimp is very effective. I'm thinking of taking a factory loaded round and putting a side crimp on it. This might be a way of judging how effective it really is! Or, a way of shearing off some locking lugs! LOL! All opinions are welcome on this one!
I'll repost this in crimp & neck tension.
Re: 300 grain bullet tests
Posted:
Mon Aug 10, 2009 6:05 amby BD1
gunnut wrote:My 1st heavy weights! Loaded up some Hornady 300gr. XTP Mags over 30, 31 & 32gr. of Lil Gun. Factory brass,PMC SRPs. side crimp. Fired 1 factory load then 4 of each, Each time. 32grs seemed close to factory,primers looked fine. Anyone care to run the numbers?
If you give me the OAL, and brass (Hornady or .284), I'll run the numbers. Did you chrony these?
BD
Re: 300 grain bullet tests
Posted:
Mon Aug 10, 2009 7:20 amby gunnut
the hornady brass and 300grn. 2.07 oal, The 230gr. 284b 2.14
Re: 300 grain bullet tests
Posted:
Mon Aug 10, 2009 12:27 pmby BD1
Quickload predicts 1871 fps at 37,960 psi for the 300 grain XTP over 32 grains of Lil Gun; COAL 2.07 in the hornady brass.
BD
Re: 300 grain bullet tests
Posted:
Mon Aug 10, 2009 4:38 pmby gunnut
Thanks! 300gr fmjhp @ 1871. With room to spare. OH ya! That's looking good! Just got to get me a chrony!
Re: 300 grain bullet tests
Posted:
Mon Aug 10, 2009 7:07 pmby Siringo
With the 300, my accuracy load was 30.5 grs of LG and a WSR primer. Avg. measured velocity was 1850 fps out of a 16 inch. Group size was less than 1.5 inches. At 32 grains, groups measured around 2 inches. Looks like QL is close on this one.
Re: 300 grain bullet tests
Posted:
Mon Aug 10, 2009 9:28 pmby gunnut
Yes! For a heavie, I'm staying with the 300gr. XTP Mag. What crimp did you use? Side or taper?
Re: 300 grain bullet tests
Posted:
Mon Aug 10, 2009 10:04 pmby Siringo
I used the taper crimp. These bullets are longer than the 250's and hold better in the case.
Re: 300 grain bullet tests
Posted:
Wed Sep 23, 2009 9:29 amby Siringo
I recently tried some 300 Gr. Noslers. The new .451 HG partition.
Using 30.5 Grs of LG -- Average Velocity -- 1826 fps, ES - 74 fps, SD - 30 fps
Using 31.0 grs of LG -- Average Velocity -- 1853 fps, EX - 26 fps, SD - 10 fps
Using 32.0 grs of LG -- Average Veolcity -- 1883 fps, ES - 27 fps, SD - 11 fps
Results from other 300's using 30.5 grs of LG in the past were .452 diameter. These Noslers are .451.
Accuracy of all the noslers were in the 1 1/2" range (less than or equal to). There was really no difference at 100 yards to make a distinction. Using this bullet, I would opt for 32.0 grs. These loads showed no signs of pressure. 16" barrel, WSR primer and taper crimp.
RUNNING OUT OF PRIMERS!