54 caliber loads for MK85

54 caliber loads for MK85

Postby Uncle Ted » February 28th, 2012, 10:25 am

Have recently converted an early Knight Stainless Steel MK 85 (serial # 2362SS) to use the 209 shotgun primer. I want to develop a load for this rifle, but am a bit discouraged by the lack of components available for 54 caliber. Would like to try the Bloodline bullet from Knight that were supposed to be available after the first of the year, but they haven't surfaced yet. Am I reading that a 50 cal bullet can be used with a 54 cal sabot? Just returning to the muzzle loader after a 5 to 6 year absence, so getting up to speed will take some time, which I have after recently applying to retire. Anybody have a successful load or info source they may want to share? Thanks
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Re: 54 caliber loads for MK85

Postby sabotloader » February 28th, 2012, 11:58 am

Uncle Ted wrote:Have recently converted an early Knight Stainless Steel MK 85 (serial # 2362SS) to use the 209 shotgun primer.


Just passing on a my feelings... I have a MK and a Big Horn and at one time or another I converted them to 209 also, today both of them are back to #11 cap ignition. No matter what ignition system you choose to use the breech is going to get dirty. One is really no cleaner than another, but IMO the cap ignition is safer than a 209 system. Since the MK is a plunger gun there is really noting to keep the blow back from the gun oushing the hammer back and spitting the 209 primer or its parts back out of the breech system, especially if you are using a bare 209 primer. Using a FPJ (red plastic jacket) might be more safe. This problem does not always appear especially if you are using moderate powder loads and lighter bullets... Here is a picture series of my shooting a heavier load with a heavier bullet.

Image

Since this experiment I have gone back to shooting a #11 Mag Cap. My hunting load for elk is 110 grains of T7-3f a 300 grain bullet in a .458 sabot.

I want to develop a load for this rifle, but am a bit discouraged by the lack of components available for 54 caliber. Would like to try the Bloodline bullet from Knight that were supposed to be available after the first of the year, but they haven't surfaced yet. Am I reading that a 50 cal bullet can be used with a 54 cal sabot?


There is a 54 cal sabot available that a 50 cal bullet like the Speer Gold Dot bullet can be put in and loaded into a 54 cal bore... And of course you can get 54 cal sabots for 45 caliber bullets and there would be a lot of options available there.

This is a link to the Speer Gold Dot 50 cal bonded Deep Curl hunting bullet. Besides this 300 grain bullet they also offer a 350 grain bullet

http://www.speer-bullets.com/ballistics ... spx?id=215

Just returning to the muzzle loader after a 5 to 6 year absence, so getting up to speed will take some time, which I have after recently applying to retire. Anybody have a successful load or info source they may want to share? Thanks


Depending on what you might be hunting in my mind would or might change the weight of the bullet used… but if you are deer hunting and want to use a Lehigh/Bloodline then the .452-250 grain bullet in a 4554 sabot would certainly do the job. Other than that the Speer Gold Dots, either 45 or 50 cal. would be another very good bullet – the 50’s might be a tad heavy for deer but they would never know. I would still suggest the #11 cap and T7 powder. With the cap you should not have to worry much about the ‘crud ring’ as you would with the 209 primer.

Here is a picture of some of the Lehigh/Bloodline offererings. you can find the 250 in this pic.

Image

Good luck in retirement and hunting
Keep on Shooting Muzzleloaders - They are a blast
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Re: 54 caliber loads for MK85

Postby Uncle Ted » March 3rd, 2012, 10:52 am

Thanks for the info sabotloader! Where can I purchase the sabots (4554) you mentioned? Is Knight Rifles the only source for LeHigh/Bloodline bullets? The Speer Combo sounds interesting. I plan to mostly deer hunt with the MK85 and am looking forward to a lot of range shooting to develop a load combo.
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Re: 54 caliber loads for MK85

Postby sabotloader » March 3rd, 2012, 12:02 pm

Uncle Ted wrote:Thanks for the info sabotloader! Where can I purchase the sabots (4554) you mentioned? Is Knight Rifles the only source for LeHigh/Bloodline bullets? The Speer Combo sounds interesting. I plan to mostly deer hunt with the MK85 and am looking forward to a lot of range shooting to develop a load combo.


Call Connie at MMP Sabots... She can set you up with the sabots. Remember her price includes shipping to your door, and there are price breaks for the more you order. But to start with I would get a couple of packs and make sure they work for you....

http://mmpsabots.com/

When you get to the home page look for the red sabot in the first sabot chart...

Also Harvester makes a 4554 sabot and you can get them from Harvester or several online vendors

Knight is the only source of Lehigh/Bloodline, but I do not believe thay offer a sabot for the combination you need - actually I should say Bloodline built by Lehigh...

If you are going with the Speer thought and after deer - you might look at the .452-250 gr. Deep Curl bullet or even the .452-300 gr. Deep Curl.
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Re: 54 caliber loads for MK85

Postby Guest » March 17th, 2012, 9:27 am

My vanilla load for my knights is 100 GR Pyrodex with a 250 452 XTP in a MMP short black sabot. This load is a real game getter.

I have been experiementing around wtih 80 GR of BH209 with 250 xtp and 300 XTP. The .458 seem to be getting a little better accuracy but with the Black Crush rib sabot.

Still working up the perfect load.
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Re: 54 caliber loads for MK85

Postby GMB54-120 » April 19th, 2012, 12:12 pm

I strongly prefer the 54x50 options, 452s in my 50cals are usually more accurate. MMP purple sabot, Speer 50-300gr or 325gr DC/Unicore and upto 100gr or T7 puts a real hurt on deer sized game. The 50-325gr Speer is actually the bullet that shipped with the 54cal MK85 for awhile.

If you want to use 458s, the Harvester Red 54x45 will work very well in some bores but it can be tight.
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Re: 54 caliber loads for MK85

Postby wolf 1954 » May 8th, 2012, 3:14 am

110 gr black mz lee real 54 calcast bullets shine :P
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