.316. A bit tight. Can't recall what bushing I'm using. Gunsmith cocked up first time around and used a .316 reamer despite my giving them a dummy round that measured the same.Quote:
Originally Posted by zimmer
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.316. A bit tight. Can't recall what bushing I'm using. Gunsmith cocked up first time around and used a .316 reamer despite my giving them a dummy round that measured the same.Quote:
Originally Posted by zimmer
I was struggling to work out why my 284 was so inconsistent. To top it all off my new 308 was also giving extraction issues. I have now identified the scope, a Swarovski Z6 that’s just came back from Austria is the problem with a parallax problem and the 308 wasn’t too hot but was a tight chamber. The scope is off again to Swarovski for repair and the 308 has a new Wilson FL bushing die coming from BRT to FL size everytime. Man guns can be so frustrating.
Turned necks on mine at 14 thou’ at .312”. I’m using Redding Comp bushing neck die with .310 bushing to give 2 thou of neck tension. Typically gives single figure 5 shot ES. Interestingly, Lapua brass neck wall thickness varies by up to 1.5 thou’ on my Mitutoyo ball micrometer, which is good compared to most, but worth addressing nonetheless.Quote:
Originally Posted by Pommy
Threw a few 160 TMK’s down range today.
Reloader 26 certainly could be a good powder in the 284Win. Loading 58g RL26 having an average speed of 2861 from a 20” barrel. Accuracy was unfortunately not as good as I had hoped at over 1”
55g of VV N160 gave 2770fps with great accuracy and low ES. This will be my load for now.
Reloader 16 also has good speed with 54g doing an average 2822 but not as good accuracy as the VV N160.
With re26 did you ladder up higher than 58gr?Quote:
Originally Posted by kiwijames
Reason i ask is at 58gr you may not be going high enough to get into that node.
Im running 57-57.5gr with 180gr eldms for 2850 fps from 22"
No. I think RL26 has some potential but I have a couple issues with my 284. First the stock is not good to shoot from my bench setup so is frustrating to shoot, plus the rifle has terrible mirage with the suppressor. I’m having good result with N160 so for now I will run with this and fiddle later on. The whole thing has been a pain in the ass. I’ve near shot a pound of powder down the tube without a good result only to find the one thing I discounted was the problem. Swarovski Z6 [emoji30]Quote:
Originally Posted by GWH
BuggerQuote:
Originally Posted by kiwijames
I’ve finally got my 284 shooting, 50.8gn 2209 160tmk, Norma brass neck turned as had some pressure issues. Only doing 2660fps out of a 20in, but shoots 1/4moa. The tmks do the damage 100m out to 680m so far. R17 wasn’t as accurate.
If you want a bit more velocity, try H414 or IMR7828SSC or RE26Quote:
Originally Posted by Tirau
I’ve got some r26 on hand, I’ll take accuracy over speed tho. How much 26 are you guys stuffing in the case to get up around 2750fps? 20in barrel, 3.064 OAL 160tmk if anyone’s got quickload. Norma brass seems soft and pressure signs early.Quote:
Originally Posted by GWH
56g RL26 gave me 2750 in Petersen brass with 160TMK. 58g gave another 100fps. Neither loads gave good accuracy in my 20" 284Win. RL16 gave better accuracy with 54g @ 2825fps.Quote:
Originally Posted by Tirau
Ive just run the 160 TMK at 3.064" COAL with a 20" barrel thru QL. At 56gr of RE26 pressure is right down at 49804 psi (max is 63817 psi for 284 win). This gives 2,723 fps and the case is only 96.9% full.Quote:
Originally Posted by Tirau
At 59gr its 2% overfull (so in theroy slightly compressed, which shouldnt cause a problem) the pressure is 60,302, so under the max of 63k and velocity is estimated at 2,888 fps.
I have been running 56gr behind a 180gr eldm in my 284 win but at a longer COAL of 3.257"
Numbers from QL are obviously only theoreticle eh, some rifles depending on the chamber or even action may not be able to run the loads that QL says are ok. Im going thru this currently with a mates 7mm SAUM - It cannot run powder charges anywhere near what i can in mine.
Start low and work up. The 56gr re26 and 160 TMK load does appear to be very light thou.
Quote:
Originally Posted by GWH
Sounds like the issues I’ve had with mine, 51gr of 2209 and ejector marks, sticky bolt at 52.5. Using Winchester bass the pockets were looser than a k road Hooker at 2 firings, Peterson brass may be harder.
How much neck clearance do you have? What is the diameter of the neck in the chamber?Quote:
Originally Posted by Tirau
I’ve got 6 thou clearance now, chamber is 318. Neck turned Norma brass to 14 thou so I’ve eliminated a tight neck.
Tried AR2209 and Re16 with 120 ballistic tips and 120 ttsx's recently. 20" barrel.
120nbt/ar2209/winchester brass/cci250/2.975" (brass simply sized, chamfered, deburred, and loaded)
54.3 2918
54.6 2887
54.9 2917
55.2 2929
55.5 2915
55.8 2983
56.1 3003
56.4 3061
56.7 no reading
57.0 3049, no pressure signs
57.5 3082, 3085, 3096, 3060, 3111 shotgun pattern
120ttsx/ar2209/winchester brass/cci250/3.000" (brass prep same as above)
53.9 2833
54.2 2854
54.5 2895
54.8 2932
55.1 2960
55.4 2951
55.7 2955
56.0 2991
56.3 3022
56.6 3018 no pressure
56.9 3072, 3051, 3046, 3022 great looking group, shame about the ES
120nbt/re16/winchester brass/cci250/3.000" (brass annealed, sized, trimmed, chamfered, deburred, flash holes deburred, the works...)
54.8 no reading
55.1 no reading
55.4 3078
55.7 3109
56.0 3106
56.3 3108
56.6 3133
56.9 3173
57.2 3183
57.5 3216 no pressure signs, exceeded 3100ft/s goal, shots 3-8 clustered in 0.5" group, 5rds loaded at 56.0 to confirm (result tbc)
Good information thanks Pommy. Similar to my results with the 139s. RE16 has velocity advantage for the same Load in grs as 2209 but not significant. I have some 120bts for my 7mm08 and might give them a go in the 284 at about 57grs RE16 to see how they shoot. Thanks for sharing. I also have some 140bts that I’m going to try instead of the Hornadys with a better BC (0.48 vs 0.39) at 56grs RE16 and should be about 3050fps in my rifle.
I think the velocity gap between Re16 and 2209 grows bigger with lighter bullets. I didn't see much difference with 160's but with 120's it was apparent.