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02-23-2018, 12:41 PM
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Load development in the mountains
Last edited by Canmarksman; 02-23-2018 at 12:52 PM.
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02-23-2018, 02:31 PM
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Join Date: Aug 2008
Location: Calgary
Posts: 4,084
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some nice shooting there
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02-23-2018, 03:01 PM
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Banned
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Join Date: Jan 2018
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Quote:
Originally Posted by marlin1
some nice shooting there
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👍 find it strange I’m only getting 2464 FPS with 44gr of reloader 15 . Afterall it was a cold day .
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02-23-2018, 05:50 PM
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Join Date: Nov 2009
Location: East Central Alberta
Posts: 8,315
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I see you have them loaded pretty long... I wonder if the bit of extra boiler room is lowering pressure?
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02-23-2018, 05:55 PM
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Join Date: Dec 2014
Location: Calgary
Posts: 1,542
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Quote:
Originally Posted by 260 Rem
I see you have them loaded pretty long... I wonder if the bit of extra boiler room is lowering pressure?
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But the bullet would grind the lands that much sooner increasing pressure. Longer coal usually increases velocity.
With 44 grains you should be seeing about 2560 with 24 inch barrel. How long is your jump? What is your barrel length
Last edited by Nyksta; 02-23-2018 at 06:00 PM.
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02-23-2018, 06:15 PM
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Join Date: Nov 2009
Location: East Central Alberta
Posts: 8,315
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I think a “close to lands” or jamb can result in a peak/spike in pressure but not necessarily an overall higher pressure curve?
Maybe try seating further into the case and see what happens? Also, some barrels are slower than others.
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Last edited by 260 Rem; 02-23-2018 at 06:21 PM.
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02-23-2018, 06:26 PM
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Join Date: May 2007
Location: Dreadful Valley
Posts: 14,620
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He’s got a stubby looking tube on that rig....
What’s your bbl length OP?
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02-23-2018, 06:56 PM
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Join Date: Dec 2014
Location: Calgary
Posts: 1,542
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Quote:
Originally Posted by Dick284
He’s got a stubby looking tube on that rig....
What’s your bbl length OP?
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If it is 20" then 2460 fps would be just about right on for 44 grains of Reloder15
Reloder 15 isnt the most efficient powder choice for 175 gr. Almost too fast of a burn for 165 gr.
Checkout Hodgdon CFE223
Last edited by Nyksta; 02-23-2018 at 07:12 PM.
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02-23-2018, 07:18 PM
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Banned
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Join Date: Jan 2018
Posts: 56
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Quote:
Originally Posted by 260 Rem
I see you have them loaded pretty long... I wonder if the bit of extra boiler room is lowering pressure?
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I tried another row at magazine length at around 2.855” the groups were opening up quiet bad but at that point I was starting to get some mirage so that test was inconclusive or inaccurate I guess .
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02-23-2018, 07:20 PM
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Banned
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Join Date: Jan 2018
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Quote:
Originally Posted by Nyksta
But the bullet would grind the lands that much sooner increasing pressure. Longer coal usually increases velocity.
With 44 grains you should be seeing about 2560 with 24 inch barrel. How long is your jump? What is your barrel length
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Barrel length is 20” I was .020” off the lands . I believe it’s about 20 FPS per every inch you add or decrease to the barrel .
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02-23-2018, 07:24 PM
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Banned
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Join Date: Jan 2018
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Quote:
Originally Posted by 260 Rem
I think a “close to lands” or jamb can result in a peak/spike in pressure but not necessarily an overall higher pressure curve?
Maybe try seating further into the case and see what happens? Also, some barrels are slower than others.
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The ones that were coal of 3.00” were sitting out in about -3 degree weather and was getting 2464 FPS for 44gr . When I grabbed the ones from inside the warm truck that are at 2.855” where shooting about 100 FPS faster with a smaller charge then 44gr . So it’s either the seating dept or temperature change.
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02-23-2018, 07:25 PM
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Join Date: Dec 2010
Location: Southern Alberta
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I’ve never had a rifle that didn’t do well at .020” or .025” of the lands. And I’ve seen .1 grain of powder difference take a group from .5” to .1” . Your getting close
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02-23-2018, 07:27 PM
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Join Date: Jan 2018
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Quote:
Originally Posted by Nyksta
If it is 20" then 2460 fps would be just about right on for 44 grains of Reloder15
Reloder 15 isnt the most efficient powder choice for 175 gr. Almost too fast of a burn for 165 gr.
Checkout Hodgdon CFE223
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You think varget would do better for 175gr ?
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02-23-2018, 07:29 PM
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Join Date: Jan 2018
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Quote:
Originally Posted by Digger1
I’ve never had a rifle that didn’t do well at .020” or .025” of the lands. And I’ve seen .1 grain of powder difference take a group from .5” to .1” . Your getting close
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Yeah 👍 I will try and find something between 43.7 and 44 .
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02-23-2018, 09:49 PM
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Join Date: Dec 2008
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Very cool.
I like the that set up you have.
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02-23-2018, 09:51 PM
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Banned
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Join Date: Jan 2018
Posts: 56
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Quote:
Originally Posted by battle rat
very cool.
I like the that set up you have.
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👍
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02-23-2018, 10:30 PM
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Join Date: Dec 2014
Location: Calgary
Posts: 1,542
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Quote:
Originally Posted by Canmarksman
You think varget would do better for 175gr ?
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it would definately be less temperature sensative and probably a touch better muzzle velocities.
take it or leave it, but i'd keep 0.025" off the lands and incrementally test for pressure up to full load with varget
Hodgdon website says 175 gr bullet max load Varget is 45.0 grains will give you 2690 fps -100 fps for 4 inches of barrel = about 2590 fps. Varget
Alliant website data for 180 grain bullet is 45 grains reloder 15 will give a 24 inch barrel 2613 fps, -100 fps for 4 inches of barrel = 2513 fps.
2513 fps / 45 grain max load data = 55.84444 fps per grain of load x 44 grain load = 2457 fps, which is exact match to your results.
Last edited by Nyksta; 02-23-2018 at 10:40 PM.
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02-24-2018, 08:42 AM
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Join Date: Dec 2012
Location: At the end of the Thirsty Beaver Trail, Pinsky lake, Alberta.
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Quote:
Originally Posted by Battle Rat
Very cool.
I like the that set up you have.
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You have some nice gear there for sure...beauty country too!
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02-25-2018, 03:55 PM
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Join Date: May 2009
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Imr 4895 is a magic elixer for the 308
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"I don't know about the "shooting Savages" part. I have one and I have had considerable difficulty doing well with it. Part of the reason for this is that I feel a need to put bag over my head to hide my identity when ever I am shooting it!"
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06-12-2018, 04:40 PM
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Banned
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Join Date: Jan 2018
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06-12-2018, 05:49 PM
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Join Date: Sep 2008
Location: Parkland County, AB
Posts: 4,257
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Quote:
Originally Posted by Canmarksman
You think varget would do better for 175gr ?
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Quote:
Originally Posted by Canmarksman
You think varget would do better for 175gr ?
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Nice Shooting !
I agree with Nykstra.. CFE223 seems to be the powder. I ran it thru Quickload at 70 deg .. 51. gr (max) shows 2720 At -1 deg 2628
Varget: 48.8 (Max) at 70 deg .. 2651
at -1 deg .. 2567
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When applied by competent people with the right intent, common sense goes a long way.
Last edited by Salavee; 06-12-2018 at 05:59 PM.
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06-12-2018, 06:15 PM
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Banned
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Join Date: Jan 2018
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Quote:
Originally Posted by salavee
nice shooting !
I agree with nykstra.. Cfe223 seems to be the powder. I ran it thru quickload at 70 deg .. 51. Gr (max) shows 2720 at -1 deg 2628
varget: 48.8 (max) at 70 deg .. 2651
at -1 deg .. 2567
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👍
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06-12-2018, 09:21 PM
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Banned
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Join Date: Jan 2018
Posts: 56
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Quote:
Originally Posted by Salavee
Nice Shooting !
I agree with Nykstra.. CFE223 seems to be the powder. I ran it thru Quickload at 70 deg .. 51. gr (max) shows 2720 At -1 deg 2628
Varget: 48.8 (Max) at 70 deg .. 2651
at -1 deg .. 2567
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Have you found that app/program to be fairly accurate ?
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06-13-2018, 09:56 AM
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Join Date: Sep 2008
Location: Parkland County, AB
Posts: 4,257
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Quote:
Originally Posted by Canmarksman
Have you found that app/program to be fairly accurate ?
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Yes, it is very accurate and very powerful. The program requires some tweaking of the default values i.e powder burn rates, H2o case capacities etc. Individual powder burn rates have to be calibrated to match actual chrony readings with each cartridge.
Once a load has been developed, that data can be transferred to the included "Quick Target" software for all the external data . Also very good.
IMO it's by far the best ballistic program out there.
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When applied by competent people with the right intent, common sense goes a long way.
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06-13-2018, 07:32 PM
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Join Date: Sep 2012
Posts: 1,600
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Quote:
Originally Posted by Canmarksman
👍 find it strange I’m only getting 2464 FPS with 44gr of reloader 15 . Afterall it was a cold day .
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Try lighter bullets. Paper won't know the dif.
Nice photos, BTW.
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Some days you're a bullet; some days you're a gopher.
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06-14-2018, 07:23 AM
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Banned
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Join Date: Jan 2018
Posts: 56
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Quote:
Originally Posted by gunluvr
Try lighter bullets. Paper won't know the dif.
Nice photos, BTW.
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Yes i tend to shoot the 155 gr scenars as well witch I already have a load developed for them , tought I’d try and see how the new Nosler RDF’s perform .
Thanks .
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