Buffalo Bore 200gr FMJ-FN (Benchrest Mar 2016)

[The_Shadow]

Cartridge is from Ammo Manufacture: Buffalo Bore 200gr FMJ-FN  Montana Gold (Benchrest Mar 2016)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1200 fps
Muzzle Energy: 639 ft. lbs
Brass Make/Headstamp: Star Line - Brass
Bullet Make/Weight/Construction/Info; Length 0.6550"/Dia. 0.4000": 200gr. CMJ-FN ? Montana Gold ?
MEPLAT 0.2350" / Flat Base (capped)
Actual weight 199.8 / 200.0 grains   Crimp squeezed bullet N/A
C.O.A.L.: 1.2500" / 1.2510" / 1.2515" / 1.2520" / 1.2530"
Primer: Large Pistol Brass color
Case: Diameter 0.4215" Crimp Diameter 0.4225" (medium) Length 0.9870"
Powder Description/Positive ID/Type/Charge BE-86 Weight: 9.0 / 9.0 grains













Test Data added today...  4/2/2016  Star Line brass primer moderately flattened
Tested from the S&W 1006  1205 FPS  Case expansion 0.4275"  Factory 5.0" BBL
Tested from the Glock 20SF  1154 FPS Case expansion 0.4335"  Factory 4.6" BBL

[Pablo]

Chute 'em! 

Thanks.

[The_Shadow]

Consistency with measures of the BE-86 has been great in my loadings with it.  Now I need to up my own game with this powder, it is why I waited to find and bought the 8lb jug!   

[Pablo]

Funny thing is I just ordered two pounds.

[RDub01]

When I was working with 180gr FMJ bullets I found 9.0grs of BE-86 at 1229 fps, to be as far as I should go in the factory barrel.
I couldn't imagine putting a 200gr bullet in front of that. I wonder if the BB has access to a much slower lot?

I didn't see a target or an actual velocity, has anyone shot these?

[The_Shadow]

I haven't yet but after this weather system down here clears out, I will try running them over the chrony...

[Benchrst]

When I was working with 180gr FMJ bullets I found 9.0grs of BE-86 at 1229 fps, to be as far as I should go in the factory barrel.
I couldn't imagine putting a 200gr bullet in front of that. I wonder if the BB has access to a much slower lot?

I didn't see a target or an actual velocity, has anyone shot these?

Good info Rdub01. I just recently found a can BE-86, and have some 180s loaded up to 8.4gr, but the weather will not cooperate!

[RDub01]

Yea it's rainin cats and dogs here, and will continue for a while.   :'(
They are saying maybe next weekend..

Benchrst 8.4grs should be just fine.  Alliant lists 8.5grs.  I didn't get case measurements of .4340"and a little over until I got to 9.0grs.
This gun didn't particularly care for BE-86 as far as shooting tight groups.  Other powders do much better.
Like to hear how it does in yours.

[The_Shadow]

We got 6" of rain but places 25 miles north and around me here got 16" to 19" rain and now the waters are draining down all the rivers but the persistent south and southeast winds at 20-30 and higher gust for many days piled the gulf and lake waters up in our area so it will take sometime to dry out here...

I'm going to try the BB 180gr and 200gr testers benchrest sent in several different guns, S&W's & Glock's if and when I get to go...

[my_old_glock]

Cartridge is from Ammo Manufacture: Buffalo Bore 200gr FMJ-FN  Montana Gold (Benchrest Mar 2016)
Ballistics Information: 10mm Auto
Muzzle Velocity: 1200 fps
Muzzle Energy: 639 ft. lbs
Brass Make/Headstamp: Star Line - Brass
Bullet Make/Weight/Construction/Info; Length 0.6550"/Dia. 0.4000": 200gr. CMJ-FN ? Montana Gold ?
MEPLAT 0.2350" / Flat Base (capped)
Actual weight 199.8 / 200.0 grains   Crimp squeezed bullet N/A
C.O.A.L.: 1.2500" / 1.2510" / 1.2515" / 1.2520" / 1.2530"
Primer: Large Pistol Brass color
Case: Diameter 0.4215" Crimp Diameter 0.4225" (medium) Length 0.9870"
Powder Description/Positive ID/Type/Charge BE-86 Weight: 9.0 / 9.0 grains

9.0 grains of BE-86 seems very high.

Alliant reloading data shows a max load of BE-86 with a 180gr FMJ @8.5 grains. This Buffalo Bore load has a bullet that is 20 grains heavier, and has 0.5 more grains.


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[The_Shadow]

my_old_glock I agree, but this is how these companies get their numbers.  I have not had the chance to test these due to the weather, range schedules and I have been laid up with cellulitis since Friday last week.  I know the Alliant printed data is on the safe side, even though they don't show pressure values any more.

I was just reviewing this data and the Sig data for BE-86 and some of my notes as I am about to load up some of my cast 200 grain to get ready for a few test using BE-86.

[my_old_glock]

I want to load some of my 210gr CL-SIL Hornady 41 mag bullets (sized to 0.402), and would like to try BE-86. That 200gr Buffalo Bore load is close to the 210gr load I want to use. Power Pistol is slower than BE-86, and I think I can safely use 7.5 grains. I may try 7.0 grains of BE-86. If the BB load is safe, I should be able to use 8.0gr of BE-86 with 210 grain bullets.



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[The_Shadow]

I put some 200 grain (some weigh 208) RCBS TCBB cast (Bullet length 0.7170") together today, I settled on 8.4 grains of BE-86 seated to 1.2525"
Maybe I'll get to take advantage of the clearing weather and go test tomorrow if I can squeeze into the scheduled events.

[The_Shadow]

Test Data added today...  4/2/2016  Star Line brass primer moderately flattened
Tested from the S&W 1006  1205 FPS  Case expansion 0.4275"  Factory 5.0" BBL
Tested from the Glock 20SF  1154 FPS Case expansion 0.4335"  Factory 4.6" BBL

[my_old_glock]

Test Data added today...  4/2/2016  Star Line brass primer moderately flattened
Tested from the S&W 1006  1205 FPS  Case expansion 0.4275"  Factory 5.0" BBL
Tested from the Glock 20SF  1154 FPS Case expansion 0.4335"  Factory 4.6" BBL

Is this the Buffalo Bore, or the RCBS TCBB cast bullet and 8.4 grains of BE-86?

What weight spring do you have in the G20?




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