|
08-01-2019, 08:17 AM
|
|
|
Join Date: Nov 2015
Posts: 254
|
|
Muzzleloader Question
Hello,
So my question is, when seating your bullet, how does seating pressure affect bullet velocity?
I recently bought a TC pro hunter 50 cal and I mounted a nikon muzzleloader scope 3x9. I'm shooting 120 grains of blackhorn 209 (measured by volume) shooting 250 grain hornady sst and at 100 yards I was shooting a 3" group. But, my group was consistently 1 inch low. I adjust the scope a couple times and still hit low.
I ran out of time so I couldn't play any longer but on my way home I was thinking maybe my seating pressure was inconsistent, getting lighter as I was shooting.
If I were to increase my seating pressure and was more consistent, would that potentially bring my group up to where I want it? And i plan on starting measure my power by weight to be more consistent as well.
Please let me know what you think. Thanks.
Sent from my SM-G930W8 using Tapatalk
|
08-01-2019, 09:03 AM
|
|
|
|
Join Date: Jun 2007
Location: Ft. McMurray
Posts: 38,526
|
|
Consistency is the key but the rule of thumb is less seating pressure less velocity .
Cat
__________________
Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
|
08-01-2019, 10:45 AM
|
|
|
Join Date: Sep 2007
Location: St. Albert
Posts: 355
|
|
Muzzleloader
As Cat mentioned consistency is the key. You might try placing a piece of tape on your ramrod to mark your seating depth and as long as your powder load doesn't change and you seat to the same mark each time your consistency will improve.
Be careful if you decide to measure by weight. Your load is by volume and will be very different and possibly dangerous if you use the same 120 grns by weight.
Volume works well you just need to be consistent in the process from load to load.
Good Luck,
Phil
|
08-01-2019, 11:46 AM
|
|
|
Join Date: Nov 2015
Posts: 254
|
|
Okay, thank you! That's good to know about the powder.
I kind of figured more pressure would make more velocity, but I just wanted to confirm. I will have play around and see what best.
Thanks again
Sent from my SM-G930W8 using Tapatalk
|
08-01-2019, 05:34 PM
|
|
|
Join Date: Jul 2007
Posts: 6,667
|
|
You can put the butt on a kitchen scale, drop the ramp rod down the pipe and punch until you reach 14lbs. Remember what that feels like and try to push the same amount each time. Why 14 lbs? A little bird told me.
|
08-01-2019, 05:58 PM
|
|
|
|
Join Date: Dec 2012
Location: Airdrie
Posts: 1,490
|
|
Quote:
Originally Posted by calgarychef
You can put the butt on a kitchen scale, drop the ramp rod down the pipe and punch until you reach 14lbs. Remember what that feels like and try to push the same amount each time. Why 14 lbs? A little bird told me.
|
Some smart guy should build a ramrod with a pressure gauge.
|
08-01-2019, 06:35 PM
|
|
|
Join Date: Nov 2009
Location: Saskatoon
Posts: 1,592
|
|
Why? When a calibrated guess has been working for hundreds of years. You can be pretty consistent with experience.
Just like an experienced arm can torque a Chev six banger head, and be near perfect.
|
08-02-2019, 05:40 AM
|
|
|
Join Date: May 2014
Posts: 3,554
|
|
I tend to seat my bullets as tight as I can, simply because whatever that pressure is (I don't actually know) it is easy to hit consistently and my groups are better as a result. Trying to get the recommended "slight crunch" has never worked as well for me. As tight as you can go will always be about the same.
__________________
If the good lord didnt want me to ride a four wheeler with no shirt on, then how come my nipples grow back after every wipeout?
|
08-02-2019, 05:41 AM
|
|
|
|
Join Date: Dec 2012
Location: At the end of the Thirsty Beaver Trail, Pinsky lake, Alberta.
Posts: 24,497
|
|
Quote:
Originally Posted by Flatlandliver
Some smart guy should build a ramrod with a pressure gauge.
|
It's on the ball of your hand....leaves a ring....the mark indicates proper pressure!
Oh and mark your ram rod to ensure seating depth.....double check this every time you take the gun out....can store half loaded....don't want to dump another load on etc.....seen too many poop shows from experienced shooters to rookies.
__________________
Be careful when you follow the masses, sometimes the "M" is silent...
Last edited by 58thecat; 08-02-2019 at 05:49 AM.
|
08-02-2019, 03:10 PM
|
|
|
|
Join Date: May 2007
Posts: 5,412
|
|
Quote:
Originally Posted by Flatlandliver
Some smart guy should build a ramrod with a pressure gauge.
|
Several have been made but were too expensive to catch on. Kadooty was one maker. I shoot Pyrodex pellets and compress to 25 pounds of pressure and mark my rod with a knife blade.
|
08-02-2019, 05:51 PM
|
|
|
|
Join Date: Dec 2012
Location: Airdrie
Posts: 1,490
|
|
Quote:
Originally Posted by 209x50
Several have been made but were too expensive to catch on. Kadooty was one maker. I shoot Pyrodex pellets and compress to 25 pounds of pressure and mark my rod with a knife blade.
|
That Kadooty thing is kind of a reverse slide hammer. I was thinking of using a collar around the ramrod with a set screw. You could set whatever pressure you wanted with a scale and then lock the collar in place. I’m shooting a smokeless ml.
|
08-05-2019, 12:27 PM
|
|
|
|
Join Date: May 2007
Posts: 5,412
|
|
Quote:
Originally Posted by Flatlandliver
That Kadooty thing is kind of a reverse slide hammer. I was thinking of using a collar around the ramrod with a set screw. You could set whatever pressure you wanted with a scale and then lock the collar in place. I’m shooting a smokeless ml.
|
There were a couple of Kadooty or pressure sensing systems. i had one that had a spring in it with a pressure gauge readout. Once i had the pressure marked on the rod I was very consistent. Your idea will work but have the disadvantage of not allowing the rod the be stored in the gun.
|
08-05-2019, 09:18 PM
|
|
|
|
Join Date: Jun 2007
Location: Edmonton SW
Posts: 1,565
|
|
Did you swab and dry the barrel between shots? Could it be build-up? When I site-in or practice shooting my ML. I will use a consistent routine to swab and dry between shots. Seems to work for me and as mentioned doing things consistently is the key.
__________________
|
08-11-2019, 11:23 PM
|
|
|
Join Date: Jun 2007
Posts: 167
|
|
Use some aluminum tape on the hing pin. The pin moves a little and causes the POI to change. I had this issue on my TC Pro Hunter. Also mark the hinge and action so that if you pull the barrel off, you then re assemble it back to the same spot. I just used a auto punch and made a mark on both. After this, you should have a great group.
You also need a fouling shot after cleaning your barrel well or you will not hit the target where you think. These TC’s like to be a bit dirty. On mine I just use a dry patch that I wet with my tongue to clean then a dry patch.
You should be able to shoot a 1” group at 100 yards and at least a 2” at 200 yards.
I also shoot the 250 grain Shockwave with 150 grains (three pellets) of Hodgdon triple 7
Killed a bunch with this. 1- Moose, 2 - Elk, 5 - Deer, 1 - coyote, and a grouse.
Still amazes me the hole left in an animal with the shockwave bullets.
My gun also shoots the Federal Premium Trophy copper 270 grain copper bullet
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 02:28 AM.
|