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Post by Earnhardt on Dec 25, 2018 13:40:45 GMT -5
It was 100 yards
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Post by Earnhardt on Dec 29, 2018 22:34:34 GMT -5
Cold weather testing... Checking for powder temp sensitivity... Last week I tried shooting a group at 500 yards in the wind....mistake It was 8*F The velocities were...3262, 3244, 3244 Shot this morning in -11*F to -5*F temps I left the powder vials and sized bullets in a covered Ziploc container in a snow bank over night The gun was cold too... I did not pre-load the gun last night, I loaded it this morning. The bullet was very tight...a 1/2 way hammer down...3309 fps...It's the hole to the lower right The next 3 shots I waited until the barrel temp was ~ 0*F on the laser thermo, and then I loaded the gun The bullet loading was much easier. A light 1-2 hands 3245, 3256, 3253 I then shot a group at 500 yards with a 5-10 mph quartering wind from the right rear...I didn't trudge through the 15" of snow to go take a pic before dark, I post it tomorrow... 3247, 3269, 3246 RL-16 seems very temp INsensitive. But is somewhat pressure sensitive in the loading procedure The next time I shoot, I'm going to tighten the loading up to a heavy 2-hands of pressure, and then drop the powder load 2-3 grains...And see what happens 100 yards
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Post by Dave W on Dec 30, 2018 8:13:13 GMT -5
Very temp stable powder, one of the best I tested in a 40cal., but I had the same thing happen on the first shot ONCE, but my velocity jump was much higher, like 200fps.
My incident made no sense, I had tested another powder first that morning and I mic every bullet. No idea why it loaded so much tighter.
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Post by 4buck on Dec 30, 2018 9:16:57 GMT -5
My shoulder hurts just reading some of these loads.
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Post by Earnhardt on Dec 30, 2018 9:53:11 GMT -5
The gun weighs 17.2 lbs The Target Shooting rest weighs ~26 lbs So the recoil isn't too bad.
I do not free recoil any of my SMLs
And with this gun I am holding onto, and pulling the gun into my shoulder, so hard it's almost funny. I wear a light winter glove that has rubberized grips on the fingers, so I can really hang onto the 3" wide forearm
It's really kind of like boxing. You know you're going to get punched. And you get used to it....but yes, some punches are harder than others.
The recoil impulse on this gun is long and hard.
The recoil impulse on my 8 1/2 lb carry .458 shooting a 310 APB at 2850-2900 fps, is very quick and hard.
I swear the lightweight 8 1/2 lb SML snaps my head back more than this big gun does
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scat
Spike
Posts: 37
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Post by scat on Dec 30, 2018 10:32:46 GMT -5
It sounds like you guys a re on the edge of RL16 testing results in the 40. In the 40, as chamber pressure is increased, the fouling becomes chalky. From there, it gets worse as pressure increases. In loads above 50kpsi, and especially near 60kpsi, I brush the bore 4 strokes every 3 shots. Varget acts the same in the 40 but also shoots well. Sounds like RL16 is well suited and tends to be less maintenance reliant in the 45.
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Post by Earnhardt on Dec 30, 2018 15:42:22 GMT -5
Just checked the bore when cleaning the breech plug No barreling fouling and no flame cutting in the brake. This load/powder combo is much quiter than IMR4831 loads of 130-135 grains Which sound like a cannon going off...unburned powder, or maybe powder that's still expanding as it exits the barrel... who knows..
Some guys shooting the bigger .338's (Edge Lapua...) say the same thing about RL-33 in their guns...lots of fouling... While others say it's the cleanest powder they've burned in their 338 The guys who have clean guns after buring RL-33 say they are keeping the pressure in the range the powder burns best in.
Maybe the same is happening with the RL-16 in some of the SMLs out there
I am throwing more induced pressure at the powder than others are. I load with a minimum of 1-2 hands of firm pressure. (And I am going to move up to a heavy 2-hands in the near future with this load) Pole vaulting would be a good term to use... And I have a 209 ignition system, which throws more pressure at a load than LRMs do. Maybe that has something to do with it.
I'd like to see what happens to the LRM guns using RL-16 when they drastically increase the bullet sizing pressure.
My guess is the velocity will jump drastically.
Maybe that's why Dave W's load jumped 200 fps that one shot? A wedged bullet, or an accidentally heavily seated bullet...Who knows...
With SMLs we are taking a huge factor out of the equation iin comparision to centerfire rifles...a full formed/smooth sized bullet compared to a bullet getting engraved into the rifling in a center fire...
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Post by Earnhardt on Jan 4, 2019 18:34:57 GMT -5
Ok, in order... 500 yard "cold bore group" 1/2 to 1 hr between shots... 3247, 3269, 3246 Light NW wind @ 5 mph 100 yard group ~70*F... I would load the gun inside, and quickly walk from the heated house, outside and shoot the gun... the outdoor temp was 37*. It took me about 20 seconds to get from the door to pulling the trigger... I fired this group after cleaning out the plug only last week. The first bullet loaded was a hammer down again. 3252, 3189, 3220 The last 2 weeks I've shot the gun, and after the gun has sat for 1 week, the first bullet is a hammer down (dried up crud in the barrel, I guess) The second shot was the low velocity at 3189, and it is the hole to the upper left The 3252 and 3220 are almost in the same hole. The group in the center of the target is the one from last week. 2nd 500 yard group. 3234, 3222, 3229 SW wind @ 5 mph I fired this group right after the 100 yard group above...about 4-5 minutes between shots. The barrel was barely warm. This one puts a smile face... 3/8" vertical spread My 200 yard and 400 yard wind flags are not up...I just winged it by watching the trees tops... I'm hoping for a dead calm day and try to see what this thing can do...
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Post by Dave W on Jan 4, 2019 19:13:27 GMT -5
Nice going Josh and good data!
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Post by Earnhardt on Jan 4, 2019 19:30:07 GMT -5
With all of the velocity testing I was doing in various temps, I was trying to have a "cold barrel" shot each time with the barrel completely cooled down.
So all of the previous 100 yard groups there is anywhere from 1/2 hr to 2 hrs betwen shots....this worked out great because I've been cleaning out the garage the last couple of weeks.
The 2nd group at 500 yards gives me hope that this is a pretty good load... I can sit on the bench and shoot every 4-5 minutes or soo and get good groups.
The cold bore groups are by far the best test for hunting situations.
But when the gun sits for a week of so, and I load the gun, the bullet needs to be hammered down each time... I don't like it.
I'm going to have the gun pre-loaded before I head out next time...or at least dump a sighter bullet into another target and then start shooting groups.
All of these groups Ive posted has been a straight up walk out the door and start shooting ordeal....no sighters... Which also gives me confidence in the powder/load combo
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Post by Dave W on Jan 4, 2019 19:39:11 GMT -5
With all of the velocity testing I was doing in various temps, I was trying to have a "cold barrel" shot each time with the barrel completely cooled down. So all of the previous 100 yard groups there is anywhere from 1/2 hr to 2 hrs betwen shots....this worked out great because I've been cleaning out the garage the last couple of weeks. The 2nd group at 500 yards gives me hope that this is a pretty good load... I can sit on the bench and shoot every 4-5 minutes or soo and get good groups. The cold bore groups are by far the best test for hunting situations. But when the gun sits for a week of so, and I load the gun, the bullet needs to be hammered down each time... I don't like it. I'm going to have the gun pre-loaded before I head out next time...or at least dump a sighter bullet into another target and then start shooting groups. All of these groups Ive posted has been a straight up walk out the door and start shooting ordeal....no sighters... Which also gives me confidence in the powder/load combo Same thing here but not to your extent. Only time I go rapid fire is if it is late and I want to get a group in or to test to see how a load does ambient versus hot. Loads that shoot the same, hot and cold, seem to be less temp sensitive. Try running a couple dry patches both sides to see if it alleviates the hammer downs. Or a patch with solvent alcohol. Works for me. Some guys run a brush to get rid of the powder bloom before loading.
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Post by shooter on Jan 5, 2019 21:41:29 GMT -5
With all of the velocity testing I was doing in various temps, I was trying to have a "cold barrel" shot each time with the barrel completely cooled down. So all of the previous 100 yard groups there is anywhere from 1/2 hr to 2 hrs betwen shots....this worked out great because I've been cleaning out the garage the last couple of weeks. The 2nd group at 500 yards gives me hope that this is a pretty good load... I can sit on the bench and shoot every 4-5 minutes or soo and get good groups. The cold bore groups are by far the best test for hunting situations. But when the gun sits for a week of so, and I load the gun, the bullet needs to be hammered down each time... I don't like it. I'm going to have the gun pre-loaded before I head out next time...or at least dump a sighter bullet into another target and then start shooting groups. All of these groups Ive posted has been a straight up walk out the door and start shooting ordeal....no sighters... Which also gives me confidence in the powder/load combo Earnhardt How you been? I had that same problem when I started sabotless my muzzleloader was the same way I have about a week after you shoot before the powder start to crystallizes on you and that will make the bullet hard to load. here what I started doing after every time i get done at the range i take a used wire brush with a patch on it run it in and out 1 time then i put the gun away and it can set for week or 6 month and I have had no issue with it loading. Hope this help. Note: I leave the breech plug in.
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Jan 6, 2019 7:16:07 GMT -5
I really like the ease of using sabots. As i have read, the reloader family is tops in temp not being a factor. I really like the fury lead tip bonded 250 gr bullet. Great on game performance. Can some one give me a starting point for a break action staying under 40,000 psi. Lmrp used for ignition. I would like to see 2350-2500 fps. Very nice article in magazine about reloader powder. I shot that combo, 40cal 250gr hlb sabot with 58gr H4198 in my Apex and got 2450ish.
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Post by Earnhardt on Jan 29, 2019 0:04:45 GMT -5
And no...I'm not doing a temp sensitivity test on Reloder 16 when it's -40 to -45*F on Wednesday morning...
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Post by Dave W on Jan 29, 2019 0:38:18 GMT -5
And no...I'm not doing a temp sensitivity test on Reloder 16 when it's -40 to -45*F on Wednesday morning... cmon man.
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Post by overtheir on Jan 29, 2019 13:15:00 GMT -5
U guys are not using standard barrels right or wrong
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Post by Earnhardt on Jan 29, 2019 19:21:14 GMT -5
Standard barrel? My barrel is a 31" Brux barrel
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Post by overtheir on Jan 30, 2019 13:00:19 GMT -5
Is it a small shank with nut or a heavier od
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Post by Earnhardt on Jan 30, 2019 18:46:48 GMT -5
-33*F...meh...
It's a shouldered barrel...
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Post by jaymiller5 on Jan 31, 2019 7:36:53 GMT -5
Is it a small shank with nut or a heavier od Shouldered barrel. Nothing really special about it over any other center for rated barrel but it is 5" @1.25" diameter. Below are the exact specs of my barrel that I got from Aarowhead and my smith setup for my Vector to use as a switch barrel. Bartlein 45cal 20twist, 6L, Modified Sendero (1.250" X 5", ST .950" @ 8.5", ST .812" @ 28")
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Post by overtheir on Jan 31, 2019 12:14:48 GMT -5
Ok just wondering thanks
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Post by mckbcat2000 on Feb 4, 2019 7:54:37 GMT -5
Has anyone tried RL16 with LRMP?
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Post by Dave W on Feb 4, 2019 14:05:35 GMT -5
Shot a couple pounds with DI and Gen 2 plugs but in 40 cals.
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