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Search: Posts Made By: obijohn
Forum: Small Caliber Discussion Board 11-24-2023, 09:33 PM
Replies: 16
Views: 9,655
Posted By obijohn
I look at the. 17 Hornet as like a .17 HMR but...

I look at the. 17 Hornet as like a .17 HMR but 175 yards closer (just like the .17 Mach 4/FB is like the HMR but 250 yards closer). How far out would I shoot a coyote with a .17 HMR? I'd keep it to...
Forum: Small Caliber Discussion Board 11-24-2023, 03:39 PM
Replies: 25
Views: 5,932
Posted By obijohn
That rifle sold for a great price. I wish I had...

That rifle sold for a great price. I wish I had seen it. New 1885 Low Walls are going for $1800, that rifle was as new. Someone got a bargain.

I have one of the 1990s era 1885 Low Walls in .22...
Forum: Small Caliber Discussion Board 11-07-2023, 02:44 AM
Replies: 16
Views: 6,980
Posted By obijohn
I have one of the Browning Low Walls in .22...

I have one of the Browning Low Walls in .22 Hornet. It has a gorgeous feather crotch black walnut stock. It shoots well under MOA at100 yards with Hornady factory 35 and 40 grain loads. I've gone...
Forum: Small Caliber Discussion Board 07-30-2023, 01:46 PM
Replies: 27
Views: 11,681
Posted By obijohn
I'd keep the one that is the most accurate, and...

I'd keep the one that is the most accurate, and that I liked to shoot the most.

The Martini is a fun little rifle, easy to collect fired brass, and certainly has a sufficient rate of fire for...
Forum: Small Caliber Discussion Board 06-20-2023, 10:14 PM
Replies: 12
Views: 7,924
Posted By obijohn
I have several original 1885s including 3...

I have several original 1885s including 3 takedowns that I've bought as potential customs, a High Wall takedown Winder Musket in22 Short, a High Wall takedown in .30-40 Krag, and a Low Wall takedown...
Forum: Small Caliber Discussion Board 02-09-2023, 03:14 PM
Replies: 3
Views: 2,791
Posted By obijohn
I find that a slightly longer-for-cartridge...

I find that a slightly longer-for-cartridge barrel has less muzzle blast and is more pleasant to shoot. A .17 Squirrel has about the same muzzle velocity as a .17 HMR, and the .17 HMR achieves its...
Forum: Small Caliber Discussion Board 01-15-2023, 09:51 PM
Replies: 28
Views: 21,352
Posted By obijohn
This was the single most informative comment on...

This was the single most informative comment on this subject, along with the Mach IV reamer print. From what I've learned, the differences in the various Mach IV chambers comes down to neck...
Forum: Small Caliber Discussion Board 01-13-2023, 04:55 PM
Replies: 18
Views: 5,116
Posted By obijohn
In the interests of learning let me ask why the...

In the interests of learning let me ask why the .17 VR instead of a Mach IV or Fireball? If the answer is "because that's what I wanted" then I understand. Let me also ask about the choice of...
Forum: Small Caliber Discussion Board 01-11-2023, 06:24 PM
Replies: 28
Views: 21,352
Posted By obijohn
Thanks! Very helpful. I had a talk with someone...

Thanks! Very helpful. I had a talk with someone at Pacific Tool about their Mach IV reamers... info on the neck diameter is all over the place.
Forum: Small Caliber Discussion Board 01-10-2023, 11:31 PM
Replies: 28
Views: 21,352
Posted By obijohn
Would you mind measuring the neck diameter of a...

Would you mind measuring the neck diameter of a fired case in your K84?

I've been studying the Cooper/Pacific Tool reamer drawing, the Hornady Mach IV cartridge dimension spec, the .17 Rem FB...
Forum: Small Caliber Discussion Board 01-10-2023, 07:13 PM
Replies: 8
Views: 4,855
Posted By obijohn
A .19 Calhoun is a hotter (as fast, more energy)...

A .19 Calhoun is a hotter (as fast, more energy) than a .17 Hornet. A .17 Hornet does at 150 yards what a .17 HMR does at the muzzle. In short, way too destructive for hunting tree squirrels. The .19...
Forum: Small Caliber Discussion Board 01-07-2023, 08:01 PM
Replies: 28
Views: 21,352
Posted By obijohn
I think I'm going to measure the depth of the...

I think I'm going to measure the depth of the chamber to the beginning of the shoulder, the FB ammo's overall case length and neck diameter and if the case is 1.400" or less and the neck diameter is...
Forum: Small Caliber Discussion Board 01-07-2023, 06:36 PM
Replies: 28
Views: 21,352
Posted By obijohn
My impression is that factory ammo, for whatever...

My impression is that factory ammo, for whatever caliber/cartridge, is manufactured to be at the minimal chamber dimensions that would be identical to that cartridge's GO headspace gauge dimensions....
Forum: Project Guns 01-07-2023, 05:42 PM
Replies: 28
Views: 40,388
Posted By obijohn
This is interesting. Every custom .17 FB that...

This is interesting. Every custom .17 FB that I've heard about is 1/2 MOA or better, certainly better than 1 MOA. Did you have the action and bolt trued? What about the bedding?
Forum: Small Caliber Discussion Board 01-07-2023, 04:13 PM
Replies: 28
Views: 21,352
Posted By obijohn
Different variations of the Mach IV

I wonder how different the Kimber 84's factory Mach IV chambers are than the Coopers, given that Cooper Rifles was started by ex-Kimber employees.

It seems that the critical dimensions for...
Forum: Project Guns 11-01-2021, 11:40 PM
Replies: 29
Views: 51,423
Posted By obijohn
Gotta wonder if a .17 Mach II would be a...

Gotta wonder if a .17 Mach II would be a worthwhile rebarrel for a 591. I'd think they'd work either with the factory 5mm mags, or with a factory 541/581 .22 LR mag.

Also, wouldn't it be easy to...
Forum: Small Caliber Discussion Board 08-08-2021, 09:45 AM
Replies: 34
Views: 19,651
Posted By obijohn
I think the Core-Lokt is a good bullet for the...

I think the Core-Lokt is a good bullet for the .30-'06 and slower cartridges for eastern whitetail deer hunting. That's what it was designed for... a quick-opening bullet that had the core 'Lokt' to...
Forum: Small Caliber Discussion Board 08-07-2021, 07:27 AM
Replies: 34
Views: 19,651
Posted By obijohn
The Core-Lokt is notorious for expanding too...

The Core-Lokt is notorious for expanding too rapidly at close range from an '06. It does not work well at high velocity... like out of a .300 Win Mag. It's not a penetrator, either, if it hits...
Forum: Small Caliber Discussion Board 08-01-2021, 06:28 PM
Replies: 15
Views: 6,811
Posted By obijohn
The K-Hornet has the shoulder blown out to...

The K-Hornet has the shoulder blown out to increase case capacity. It stands to reason that a regular Hornet die will set the shoulder back to match that of a standard Hornet cartridge. You could...
Forum: Small Caliber Discussion Board 07-29-2021, 01:22 AM
Replies: 34
Views: 19,651
Posted By obijohn
I think the coyote in the video was a raking shot...

I think the coyote in the video was a raking shot too, in that the bullet is striking the sternum at a steep angle. IIRC bullets that ricochet when striking a flat surface at a sufficient angle tend...
Forum: Small Caliber Discussion Board 07-27-2021, 06:06 PM
Replies: 34
Views: 19,651
Posted By obijohn
I've shot plenty of bullets against steel plate,...

I've shot plenty of bullets against steel plate, railroad ties, Kevlar, Spectra, and other types of armor as well. I designed and built what was then WA state's largest indoor shooting range. I was...
Forum: Small Caliber Discussion Board 07-26-2021, 08:53 PM
Replies: 34
Views: 19,651
Posted By obijohn
The only thing I'd worry about with that high of...

The only thing I'd worry about with that high of a muzzle velocity is having the bullet blow up on the surface and not penetrate. It's my understanding that the NTX is a very fragile bullet... what...
Forum: Project Guns 07-23-2021, 09:50 PM
Replies: 9
Views: 19,185
Posted By obijohn
I measured the new (new) R700 bolt today and...

I measured the new (new) R700 bolt today and compared it to the EtronX bolt in terms of length of bolt lug and distance from the rear of the lug to the top of the bolt nose extension... and they're...
Forum: Project Guns 07-23-2021, 09:46 PM
Replies: 9
Views: 19,185
Posted By obijohn
I hear what you're saying, but I've tried to sell...

I hear what you're saying, but I've tried to sell it for just below what a standard equivalent Rem 700 would go for... including 5 boxes of ammo... and there's no interest.

I plan to convert it in...
Forum: Project Guns 07-23-2021, 05:26 PM
Replies: 9
Views: 19,185
Posted By obijohn
In terms of bolt clearance and sufficient but not...

In terms of bolt clearance and sufficient but not excessive intrusion into the barrel ('3 rings'), how would a gunsmith check these?

If the bolt protrudes too much, or there is insufficient...
Showing results 1 to 25 of 46

 
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