22GT load data

#601
Thinking about retiring my 204R for a 22GT to have more of a dual use coyote/short range deer stick.
Local shop has a really good deal on a 20in carbon wrapped anti prefit
I can get N550 but I have a fair amount of H4350 on hand.
I suppose if I don't really care about barrel life, N550 would be the most optimal for 77 LRX and 80.5 Berger ?
Thinking about running about 2.50" coal, 34-35gr N550, Alpha brass, CCI 450 ... seems like the easy button... hoping to hit 2950 FPS with a 800-1000 rounds barrel life

Also got N555 on hand ... maybe I should start with that or is that too slow of a burn rate for the 77 LRX ?
 
Last edited:
#602
st1650 said:
Thinking about retiring my 204R for a 22GT to have more of a dual use coyote/short range deer stick.
Local shop has a really good deal on a 20in carbon wrapped anti prefit
I can get N550 but I have a fair amount of H4350 on hand.
I suppose if I don't really care about barrel life, N550 would be the most optimal for 77 LRX and 80.5 Berger ?
Thinking about running about 2.50" coal, 34-35gr N550, Alpha brass, CCI 450 ... seems like the easy button... hoping to hit 2950 FPS with a 800-1000 rounds barrel life

Also got N555 on hand ... maybe I should start with that or is that too slow of a burn rate for the 77 LRX ?
Click to expand...
I haven't tried the N550 yet. RL 15.5 has been pretty available and would be in the sweet zone for 77 class.
 
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#603
st1650 said:
Thinking about retiring my 204R for a 22GT to have more of a dual use coyote/short range deer stick.
Local shop has a really good deal on a 20in carbon wrapped anti prefit
I can get N550 but I have a fair amount of H4350 on hand.
I suppose if I don't really care about barrel life, N550 would be the most optimal for 77 LRX and 80.5 Berger ?
Thinking about running about 2.50" coal, 34-35gr N550, Alpha brass, CCI 450 ... seems like the easy button... hoping to hit 2950 FPS with a 800-1000 rounds barrel life

Also got N555 on hand ... maybe I should start with that or is that too slow of a burn rate for the 77 LRX ?
Click to expand...
I’m shooting 39grains of N555 with 75eldm, CCI 450, in a 22” 1:8 barrel, Gap Chamber @ 3190.
 
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#604

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#607
YBPS said:
It is not for me. I have a long lead so the bullet is set pretty far out.
Click to expand...
now that I have 100ish rounds down the tube I loaded some rounds down to 37.5 and was not impressed with anything. Went the other way to 40.2 N555 which is very compressed and shot a very nice ragged hole with 4 shots with 5 fps spread. 3271 FPS w 1:8 22” 75 ELDM. Bolt lift is good and no noticable pressure signs.
 
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#612
Gave up on the 88s after a bit, loaded a case with a max charge of h4350 and an 80 eldm. This is pretty typical for this rifle and load. 20” velocities were about 3125, now that it’s cut to 16.5” same load is 2990fps. Next barrel will be 18”
image_cropper_E6B8E1BF-5DAC-4B1B-AF79-47358CFD6632-1867-00000A16ED7DE67B.jpeg
 
#614
95SMK G7 ballistic coefficient? My searches have only yielded the ambiguous G1. I am curious about this number for more accurate data for my Kestrel.

Any help would be appreciated.
 
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