52g ELDM in .222

The 52 GRN HP Speers are an awesome projectiles with flat base and huge hollow nose.trebly likes them. I cocked up years back n bought box of 50grn...the same but small hollow pointy nose.they still killed wallabies well and solved headache of 110lb boar that met us on track too...up went rifle and down went pork lol.

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Originally Posted by bjp

That's a relatively low case volume. GRT is showing following max. loads:

2207 18.7gn 3080fps, 95% burn, 95% case capacity
2219 21.5gn 3110fps, 92% burn, 102% case capacity
BM2 21.6gn 3050fps, 83% burn, 98% case capacity

pointing towards the 2219 I would say from that. In theory if the burn load is too low it can lead to velocity variations. Don't just trust GRT though, see what reloading data on reputable websites say for max loads, then compare actual velocity to what GRT says. Its pretty close for my load in my single shot 222, which is slightly over ADI book max.

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In regards to case capacity, my measuring may not be that accurate?? When it has 102% for the 2219 does that mean up to the top of the neck or allowing for the projectile and seating depth/OAL so maybe around the base of the neck? Reason I ask is I loaded them with 22g 2219 and seemed to fit in easy. Hornady has 22.5g for 3000fps. Albeit 5 different projectiles on that page and load data

Some cases are much smaller capacity than others...as in a whole 2 grns of fine grained 748!!!

102% would be allowing for seating, slightly compressed load. Half a grain case capacity can make quite a difference to pressure for these smaller cartridges. Best thing I've found, if you can, is to chrono a couple of different loads then that can be used to validate GRT model. I always start with published data (typically ADI or Hodgdon, just from habit), down from max, then use that to "calibrate" the GRT model for that rifle/load. I'm typically looking for 90%+ burn, but that doesn't always equal fastest or most accurate load. But I'm not a long range shooter, so pretty happy if I'm getting 1moa or less at 100m. But by the numbers, its still looking like BM2 may be a little slow to get best results.

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Originally Posted by Micky Duck

Win 748 for me.

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748 is the magic juice for the triple deuce and has been for years. Due to load another 400 for a mate. He would cut my throat if I suggested another powder.

Jeepers it's up there in price, I'll soldier on with some of these other powders before I go buying that.

Couple of 5 shot groups after trying some 2207 in windy conditions. Try it again next week and see if it repeats.
Attachment 279510

Same loads I use. 19.2 Gr 2207 with 50Gr soft point. Groups like yours

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Originally Posted by charliehorse

Couple of 5 shot groups after trying some 2207 in windy conditions. Try it again next week and see if it repeats.
Attachment 279510

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Both very tidy. Just pick one & go hunting.

Nah, I might ask Dennis where to from here....