Patching to groove

Discussions of powders, bullets and loading information.

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Drahopa7
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Re: Patching to groove

Post by Drahopa7 »

I can machine the base flat.
That's easy. Try it out.
Lose the lube cookie.
A friend offered to trade me a 50-70 trapdoor 10 years ago.
What is a 50-70, I asked wide eyed!
I am still running down that rabbit hole..

Marc M
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Don McDowell
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Re: Patching to groove

Post by Don McDowell »

Just make a new one
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Drahopa7
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Re: Patching to groove

Post by Drahopa7 »

It is an a nose pour adjustable base.
Just pull it out and machine flat.
Easy peasy.
Afraid to push my luck.
Using 2F goex.
Everyone seems to be using 1F or 1.5 F.
Any thoughts?
A friend offered to trade me a 50-70 trapdoor 10 years ago.
What is a 50-70, I asked wide eyed!
I am still running down that rabbit hole..

Marc M
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Don McDowell
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Re: Patching to groove

Post by Don McDowell »

2f works fine
Goex likes compression
Probably need to be upwards of 85 grains
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Drahopa7
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Re: Patching to groove

Post by Drahopa7 »

Made up 15 rounds of pp this weekend.
Had a tough time getting them to seat.
GG bullets shot fine.
Pulled apart ammo and found I had a bump right at the .60 fiber wad.
I opened the case to .457 then put in 82 grains of 2fg, added a .60 .455 fiber wad and compressed with a .450 die.
What did I do wrong?
Thinking
1) I didn't anneal far enough down the the case
2) I compressed to much ?
3) I need to make a .455 compression die ?
I was trying to seat the bullet .620 down.
Any advice would be appreciated .
A friend offered to trade me a 50-70 trapdoor 10 years ago.
What is a 50-70, I asked wide eyed!
I am still running down that rabbit hole..

Marc M
Houston, Tx
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bpcr shooter
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Re: Patching to groove

Post by bpcr shooter »

stop resizing your brass, its not needed.


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Re: Patching to groove

Post by bpcr shooter »

There is should be no need to "open" your brass other than to make sure the case mouth is round. So, with that, fire the rounds you made up, then measure your case mouth. Take said measurement and get a bullet .001 under that size. Find max that the bullet can sit out of case, fill case with powder to the base of the bullet, put a .060 wad on top compress so your bullet can go back to that depth. Shoot. If groups suck, start adding .5gr of powder until you get a decent group, then play around with different primers, wads.

If your shooting PP bullets groove size you go at it the same way. in either case, there is really no need for roll crimp, but if it makes you feel better, Lyman makes a taper crimp die
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Re: Patching to groove

Post by Don McDowell »

Add more powder and loose the crimp.
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Lumpy Grits
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Re: Patching to groove

Post by Lumpy Grits »

My .45-90 load.
Annealed Starline case sized in a .45-110 FL die, and trimmed to 2.395" OAL.
Case mouth expanded to .457 with slight flare.
CCI br2 LR primer with a .40 cal white coffee filter 'wad' at the bottom of the case.
85gn by weight of Goex Old E 2F, with .060 Walter's fiber wad.
I'm compressing about .375. Hold the ram in place for a bit, to let the air out of the case.
Seat Paul Jones Creedmoor using DGL lube, to just cover top grease groove. Then close the case mouth just enough so the round will chamber.
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Drahopa7
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Re: Patching to groove

Post by Drahopa7 »

I didn't crimp the case.
I used a straight new starline case.
Annealed and used a straight neck expander to .457 .
Went down .600 depth to seat pp bullet finger tight.
Put in 82 grains of bp and compressed .400 with a .60 fiber wad.
The .456 pp bullet slipped in tight .
I had the bow in the case right at the wad/ compression area.
Wondering if I over compressed and caused a bow?
A friend offered to trade me a 50-70 trapdoor 10 years ago.
What is a 50-70, I asked wide eyed!
I am still running down that rabbit hole..

Marc M
Houston, Tx
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Re: Patching to groove

Post by Aviator »

Yes, compressing .400 can start to bulge the case, especially in an area where it is annealed.
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Drahopa7
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Re: Patching to groove

Post by Drahopa7 »

Should I anneal it further down or less to stiffen it ?
Less compression would work which means less bp.
Well let me try again.
Lesson learned.
A friend offered to trade me a 50-70 trapdoor 10 years ago.
What is a 50-70, I asked wide eyed!
I am still running down that rabbit hole..

Marc M
Houston, Tx
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Re: Patching to groove

Post by bpcr shooter »

Drahopa7 wrote: Mon May 08, 2023 11:59 am I didn't crimp the case.
I used a straight new starline case.
Annealed and used a straight neck expander to .457 .
Went down .600 depth to seat pp bullet finger tight.
Put in 82 grains of bp and compressed .400 with a .60 fiber wad.
The .456 pp bullet slipped in tight .
I had the bow in the case right at the wad/ compression area.
Wondering if I over compressed and caused a bow?

ok good, now check the dia of your case mouth.
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Re: Patching to groove

Post by bpcr shooter »

you dont need to anneal it any further, the annealing of your case is to help seal the case to the chamber if your not getting blow back your good.
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semtav
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Re: Patching to groove

Post by semtav »

I'm guessing 1 2 or all 3 things are causing your problem

1 you over annealed your cases

2 you are over compressing your powder

3 you're veggie was is expanding.


1 we have no way of telling how hot you got your case. I anneal mine every time and have no problems

2 reduce your powder to start. Maybe try.,2 compression to start. Adding more powder at this point will only aggrevate the problem.


3 try compressing your load without the wad then adding it or switch to a ldpe wad. I'm not a big fan of thick veggies in heavily compressed loads
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