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Post by youp50 on Jan 10, 2009 10:43:43 GMT -5
12 pt brings up a point in another thread.
How do you decide you have seated your sabot/bullet consistently?
I load the powder, tap the gun a bit to settle the powder. I use an aluminum rod and push till I feel the sabot contact the powder. H4198. I then lean on it until the powder no longer crunches. I feel the aluminum rod offers superior feel to what is happening in there.
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Post by DW on Jan 10, 2009 11:37:45 GMT -5
Similar to you, once the bullet/sabot bottom out I give a couple leans and then two sharp raps to the top of the range rod with the open palm, always taking notice of the witness mark.
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Post by E.T. on Jan 10, 2009 13:01:37 GMT -5
Youp50
With my good snug fitting loads I simply pour down the powder and with one good continuous loading stroke (with the aid of a T handle) seat the bullet, followed with a short lean on it. This works well for me because of the aluminum rod as you mention. Once the load resistance begins to change to a specific level from fouling I know its time to do an intermittent bore cleaning that is a part of my loading technique.
Just my way of maintaining the accuracy level I desire.
Drop has an interesting approach for consistent seating pressure. If he doesn’t experience fouling to any degree that changes loading resistance then he has a great tool at his disposal.
Another way of looking at it that may work is if he monitors the change of loading pressure and factor it in to his final level of seating pressure.
Example: if it takes say 40lbs of loading resistance to get the load seated on the powder and then applies an additional 10lbs for final seating pressure his tool would register 50lbs. Now if his load resistance changes to 50lbs would a final seating pressure of 60lbs give him the same result for final consistent seating pressure?
Ed
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Post by youp50 on Jan 10, 2009 22:18:52 GMT -5
Ed,
Given the almost anal attention bench rest shooters give to weigh bullets/brass etc and sorting them into lots I begin to wonder if this would affect accuracy.
Given a clean barrel, sort the shots by the pressure needed to seat the bullet/sabot. It is a given that injected sabots and commercial bullets have varying degrees of differences in the thickness and diameter. It presents an almost endless combination. However if a person could have several targets down range and assign each one a pressure seating value I wonder what the groups would look like. Example being 30 pound pressure being the goal. Target one receives all shots needing 28 to 30 pounds, target two all shots needing 30 to 32 pounds etc.
Just thoughts that would have no practical value in the hunting world.
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Post by E.T. on Jan 11, 2009 0:31:14 GMT -5
Youp50
That’s an interesting concept that I never really thought about because my focus has always been more on the degree of fouling and residual barrel heat that can radically affect my groups. Next is trying keep the seating pressure of the load to a more consistent level by using the same loading technique every time.
If a bore could be kept to a consistent level of cleanliness and equal bore measurement existed through out the length so that only the load resistance level was governed by the bullet sabot combination it would be interesting to see the results of different loading pressures felt and applied.
The end result would dictate what value it would have for accurate muzzle loading application.
Ed
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Post by 12ptdroptine on Jan 11, 2009 12:09:18 GMT -5
Youp50 That’s an interesting concept that I never really thought about because my focus has always been more on the degree of fouling and residual barrel heat that can radically affect my groups. Next is trying keep the seating pressure of the load to a more consistent level by using the same loading technique every time. If a bore could be kept to a consistent level of cleanliness and equal bore measurement existed through out the length so that only the load resistance level was governed by the bullet sabot combination it would be interesting to see the results of different loading pressures felt and applied. The end result would dictate what value it would have for accurate muzzle loading application. Ed Thanks for the supportive words Youp50... If we were to go back to the black powder ritual of wet-patch then 2 dry-patch between each shot.. Like I do with my Encore..And had a way to measure the seating pressure.. Wouldn't this enhance consistancy..which in turn enhance accuracy?.... As far as the cleaning between shots for accuracy at the range..It has never been a problem for me, and with the Savage we have a few minute's to consume anyway..It's the urgency of that dreaded tear down and cleanup ...even after one shot with BP or BP sub's. I been thinking..(imagine that). If a plunger could be made...Like that on a tire tread depth guage..or a metal tire pressure gauge..then drill a hole up from the bottom in it ..tapp it for a fine machine screw thread..then fasten a 1/4" washer to that bottom...slip it through a short spring..protruteing from the top....Now drill a hole through a palm saver..so that the Gage part protrudes up through it...put the ramrod down the barrel...the "Gizmo" on top...press down to the desired pressure's..make note of the numbers you read...Or just use an aluminum rod in the spring and palm saver hole...Either way make a witness mark with every 5 lbs of pressure... If I only had a lathe....I think I could make one... I KNOW one of you intelligent people can take this idea and run with it... Drop |
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Post by youp50 on Jan 11, 2009 12:25:47 GMT -5
Drop, Lets see a hydraulic accumulator, spring loaded piston could be done... I do have an old spring scale at the camp. It was made for weighing fish. I think with a hand drill one could adapt it to your needs. Just invert it so to speak and run the ram rod through the top. I think the spring may have a large enough diameter for that. Same thing could be done with the right compression spring from a hardware store. Just be sure to match the spring to the pressure and use a longer spring for better sensitivity. I would tend to want a scale on the side vs something out the top. I have had enough foreign bodies compromising my epidermal layer to last me well into the next life. Trouble is camp is around a hundred miles from here and I just got done cleaning the snow from the roof. If senility does not overcome me I will try to remember it next time over. Trouble is scooping a couple tons of snow does things to my memory  |
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Post by 12ptdroptine on Jan 11, 2009 12:49:46 GMT -5
Nope couldnt be a Hydraulic accumulator thingamajiggy. Hydraulic pressure would change volumetric pressure with temperature variation....Drop And I could see me running something else through the top of the palm saver..and into my palm also..Good point. Drop
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Post by youp50 on Jan 11, 2009 13:58:55 GMT -5
Actually an accumulator is nitrogen under pressure over hydraulic oil. Like a storage place for oil pressure. Depending on volume of accumulator fairly flat pressure over temperature range. Probably cheaper for a Pacnor or two.
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