39gr H4895 OCW Load workup

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brooksb
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39gr H4895 OCW Load workup

Post by brooksb » Thu Oct 05, 2017 6:51 am

OCt 4 39gSBK1-1.png
Shot these Eight loads as per the OCW directions which meant I only shot each load/target every eight shots
OCt 4 39gSBK1-1.png (61.18 KiB) Viewed 311 times
OCt 4 39gSBK1-2.png
last two loads were pretty near max, so I'm not disappointed they didn't test well
OCt 4 39gSBK1-2.png (51.7 KiB) Viewed 311 times

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Jim White
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Re: 39gr H4895 OCW Load workup

Post by Jim White » Thu Oct 05, 2017 9:46 pm

Your groups for 26.8 looks just like my 5-shot groups of 27.9 gr @ 200 yds with the same bullet with my CZ527. IIRC, the max load [at the time per the manuals] was 28.1 although I used RP brass vice WW. Mine shoots like that still today and for what ever reason, all of my 204's shoot best up near max while most others shoot down in the mid range somewhere.

brooksb
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Re: 39gr H4895 OCW Load workup

Post by brooksb » Fri Oct 06, 2017 5:20 am

Interesting, what is posted is my second shoot with 39g BK I up didn't find a good load at lower charges so those posted were a grp of heavier charges. 32gr Vmax's with BL-C (2) shoot best it seems at low charges, 28.3 which is what I used on my posted target is A min charge.

Jim White
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Re: 39gr H4895 OCW Load workup

Post by Jim White » Tue Oct 10, 2017 5:59 pm

I may have miss spoke, I use 39-gr SBK, vice 32 grains. Either way, all of my 204's shoot much better up near the top of the charge vice the lower and middle bands.

brooksb
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Re: 39gr H4895 OCW Load workup

Post by brooksb » Tue Oct 10, 2017 7:12 pm

We've had the North winds fires and smoke so I haven't been to range to drill down on the Three best 39SBK H4895 Loads and see if i can shoot another small grp With the 32vmax/BL-C (2) loads, but 4cast looks good for early next WK.

brooksb
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Re: 39gr H4895 OCW Load workup

Post by brooksb » Tue Oct 17, 2017 2:10 pm

Well too bad I didn't have my scope zeroed for the best grp above for the monthly competition. the North winds have subsided and I shot the 26.6, 26.8 & 27.0 loads twice yesterday the best grp was .285" & the other was .482". So I'm going to go with the 26.8 load practice some more and maybe tweak some more.

Jim White
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Re: 39gr H4895 OCW Load workup

Post by Jim White » Tue Oct 17, 2017 8:25 pm

What distance are you shooting at? If it's 200 yards thats pretty darn good. On a like day [weather wise] see if the loads are repeatable. If these were done @ 100 yds, if possible, try them at 200 yds and see how they do. HTH

brooksb
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Re: 39gr H4895 OCW Load workup

Post by brooksb » Wed Oct 18, 2017 4:54 am

No, just 100 for load work-up but that's probably next as I'll zero to 200.

dan97526
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Re: 39gr H4895 OCW Load workup

Post by dan97526 » Thu Dec 07, 2017 1:32 pm

Ha! Exactly - exactly! - what I came here to ask about today: 39gr SBK with H4895. I'll be running my own OCW on this combo within the within the next month, I will be sure and post results. Thanks!

I'd have a pretty tough time myself reading the OCW tea leaves with this test. I don't see a clear node.

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brooksb
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Re: 39gr H4895 OCW Load workup

Post by brooksb » Thu Dec 07, 2017 2:41 pm

I went again and shot the same series of loads only with an OAL of 2.300 just for kicks and 26.8 shot tighter, since then between WX and Thanksgiving I haven't been with this load. I switched scopes between the 22-250 & 204 so my range time has been re sighting.

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