Author Topic: Rainy day ativity @ the Farm  (Read 751 times)

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Offline sabotloader

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Rainy day ativity @ the Farm
« on: January 26, 2010, 05:02:42 PM »
It was raining all morning but I really had a need to do some shooting so I headed to the farm.

Tom had cleaned out one of the out buildings, the only things left under the canopy was a PU camper and boat... I was able to back under the canopy in the camper section - open the tailgate and the my canopy cover and work off my tailgate work bench and everything stayed dry.

I set the bench up in the next stall in front of the boat and walked the target out 35 paces - which I thought would be somewhare near 25 yards.... I do not pace for a living and it is a good thing - cause a was a bit farther than 25 yards. When I ranged it at the end of shooting with the range finder it was 37/38 yards.

The goal was to sight in a new Nikon Omega on a Knight DISC 50 and I also wanted to test a new Chrono that has not worked right the last two trips out.... I was reading a 3 digit number and that was really bothering me... I sent a email to Competition Electronics and the service tech very politely said - "you dummy... you have it set on meters/second" he didn't say "you dummy' but after him telling me what was wrong I know he was thinking that.... i didn't even know it could measure 'meters/second' Well anyway, he told me the key strokes to get it back to feet/second and now everything is good.

Anyway got the target out and the chrono setup and commenced to shooting. I was shooting the last of a box of 300 grain XTP's and I was going to shoot both BH and T7 - I decided to shoot 110 grain of both powders just for drill. Thought it would be a good place to start sighting the scope in.

The other experiment was I was going to use 7 different primers just to see if there were any big differences in velocities.

I did save the hotter primers to shoot the BH with but just for grins I decided to try a couple of Winchester T7 primers - just to see how they would do... no problems at all - instant ignition.



Nothing out of this world, but I was really surprised at the differences on velocities... I was sure that the BH loads would be a bit hooter than the T7 loads. I was using a HPH-24 sabot for all shots and this is a very snug sabot in this DISC Elite. I made a point of compressing the loads, both T7 and BH.

But, when you look at the velocities - I begin to wonder.... 110 grains must be the point just at turn over where 120 grains of BH will create a greater velocity with this 300 grain bullet than does 120 grains of T7. Looking back on one of my earlier spread sheets 120 BH does move the velocity faster than 120 T7.

Anyway it was a great rainy day activity... i advise it for everyone.
Keep shooting muzzleloaders - they are a blast....

Offline DennyRoark

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Re: Rainy day ativity @ the Farm
« Reply #1 on: January 28, 2010, 02:32:32 PM »
Sabotloader, did you use the Lehigh plug conversion on this one?  If so, how did it work?
Denny Roark
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Offline sabotloader

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Re: Rainy day ativity @ the Farm
« Reply #2 on: January 29, 2010, 08:51:55 AM »
DennyRoark

I did... the business end of the plug worked really well.  I can not say to much about the plug yet because the one i have is a prototype plug.  When I got the new one I could not extract primers, even the Fed 209 would stick just pushing them in.  So i sent mine back to Lehigh for modification, which he is doing to all of them.

Since I was excited about shooting the new plug and I now had a primer holder i tried the prototype, it still stuck the fatter primers, Winchester and Fed's wouls work kinda... and since it was a prototype I decided to hone it out to .242 At that point all primers work. 

I can say no blow back on the scope at all and the new plug with removavble vent liner shot great... Was it as clean as I hoped? not quite... and after a few shots i could not get te spent primers to fall out of the bolt - just to much residue in that area for the tight fit that it is.

REMEMBER.... this a prototype BP and one that i have altered.... I am still waiting for the finished product to get here... then i will try again.
Keep shooting muzzleloaders - they are a blast....

Offline DennyRoark

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Re: Rainy day ativity @ the Farm
« Reply #3 on: January 29, 2010, 10:16:16 AM »
Gotcha,  Thanks and keep us posted!
Denny Roark
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Offline Busta

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Re: Rainy day ativity @ the Farm
« Reply #4 on: January 29, 2010, 07:49:23 PM »
DennyRoark

I did... the business end of the plug worked really well.  I can not say to much about the plug yet because the one i have is a prototype plug.  When I got the new one I could not extract primers, even the Fed 209 would stick just pushing them in.  So i sent mine back to Lehigh for modification, which he is doing to all of them.

Since I was excited about shooting the new plug and I now had a primer holder i tried the prototype, it still stuck the fatter primers, Winchester and Fed's wouls work kinda... and since it was a prototype I decided to hone it out to .242 At that point all primers work. 

I can say no blow back on the scope at all and the new plug with removavble vent liner shot great... Was it as clean as I hoped? not quite... and after a few shots i could not get te spent primers to fall out of the bolt - just to much residue in that area for the tight fit that it is.

REMEMBER.... this a prototype BP and one that i have altered.... I am still waiting for the finished product to get here... then i will try again.


sabotloader

Read this from back in September. Looks like a few of our recommendations were forwarded to Dave, but the primer pocket needs to be deeper, and .242" to .243" diameter works very well in my custom plugs. If they would use these same dimensions, I think the Lehigh Knight conversion could also work as well. I have never had a primer stick in the primer pocket, and the primers seal in the plug as well. Whenever I am able to get some from Lehigh, mine will be blowback free after I get done tweaking it and my bolt face. The primer pocket needs to be deeper to keep the primers from swelling up near the rim and locking themselves in the bolt adapter. I relayed this to Tom back in September.

The biggest problem with blowback in these Knights is the large diameter firing pin actually knocks the primer cup forward in the battery cup, then the blowback moves it back and leaks onto the bolt face. If you want it blowback free, you need to turn down the firing pin, then insert a drill bushing in the face of the bolt as a firing pin guide and a flat primer seat.

What is the inside diameter of the powder well on the Lehigh plug? It looks like it may be too large for the .45's? Still looks to me that they are NOT THERE YET, that's too bad. I will buy a few of them, but hope I can tweak them to what I really want. After all this time I thought this plug would be perfect, doesn't look like it works any better than the Knight NFPJ plugs I have? I have tweaked one of my Knight plugs, and it is cleaner than the few reports I have read on the Lehigh. Guess I will just wait and see if it improves any? In the mean time, I think I will forge on with customizing the rest of my Knight NFPJ Plugs.

Here was one short discussion back in September.

http://www.gboreloaded.com/forums/index.php/topic,183956.0.html

These plugs have been worknig perfectly with Blackhorn 209 in my H&R/NEF Huntsman/Sidekicks since last June. Here they are with the Lehigh vent liners. Was hoping the powder end of the new Lehigh Knight plug would be similar.



More pics with the Savage type liners.






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Offline sabotloader

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Re: Rainy day ativity @ the Farm
« Reply #5 on: January 31, 2010, 01:21:39 PM »
Busta

Quote
The biggest problem with blowback in these Knights is the large diameter firing pin actually knocks the primer cup forward in the battery cup, then the blowback moves it back and leaks onto the bolt face. If you want it blowback free, you need to turn down the firing pin, then insert a drill bushing in the face of the bolt as a firing pin guide and a flat primer seat.

When I look at the pictures posted by Lane I can not say that I can see any primer leakage from the primer or between the primer and the battery cup.

 http://www.gboreloaded.com/forums/index.php/topic,197752.0.html










 
Keep shooting muzzleloaders - they are a blast....