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Forum: 300 Whisper Ammo and Reloading 12-12-2011, 11:09 PM
Replies: 3
Views: 1,656
Posted By pomofo
I load them at 2.150", with great accuracy at...

I load them at 2.150", with great accuracy at 20.2, 20.4, and 20.6 grains of 1680.
Forum: 300 Whisper Ammo and Reloading 07-24-2011, 10:06 PM
Replies: 4
Views: 1,741
Posted By pomofo
Sierra is 1.307", Hornady is 1.261".

Sierra is 1.307", Hornady is 1.261".
Forum: 300 Whisper Ammo and Reloading 12-22-2010, 09:04 PM
Replies: 4
Views: 1,929
Posted By pomofo
This site:...

This site: http://www.schiferli.net/Shooting%20K31.htm shows a cutaway of the bullet.
Forum: 300 Whisper Ammo and Reloading 12-19-2010, 05:52 PM
Replies: 4
Views: 1,929
Posted By pomofo
I've played around with them a bit. COAL of...

I've played around with them a bit. COAL of 1.885", I've worked up to 19 grains of Acc. 1680, settled for 18.7 grains as my accuracy load. With a 4MOA red dot I was getting 1" 5-shot groups at 50...
Forum: 300 Whisper Ammo and Reloading 12-03-2010, 07:05 PM
Replies: 3
Views: 1,192
Posted By pomofo
Those numbers look like they're for a load loaded...

Those numbers look like they're for a load loaded to mag length.

Everything depends on your COAL. Loaded to 2.150", which is what I have to load to in my short-throated M1S chamber, chamber...
Forum: 300 Whisper Ammo and Reloading 11-06-2010, 01:50 PM
Replies: 24
Views: 4,766
Posted By pomofo
I've loaded the 220 Hornady's with AA1680,...

I've loaded the 220 Hornady's with AA1680, everything between 9.4 and 12.8 grains at a COAL of 2.000". According to my notes I've never had a problem with feeding, extraction, or ejection. Only...
Forum: 300 Whisper Ammo and Reloading 05-10-2010, 01:05 AM
Replies: 8
Views: 1,417
Posted By pomofo
Some of the OALs I settled on are: 220 & 240...

Some of the OALs I settled on are:

220 & 240 SMK - 2.145"
200 Hornady RN - 2.000"
175 Berger VLD - 2.245"
168 Prvi HPBT - 2.260"
155 Nosler CC - 2.165"
150 Hornady FMJ - 2.135"
145 Wideners...
Forum: 300 Whisper Ammo and Reloading 04-28-2010, 04:47 PM
Replies: 8
Views: 1,417
Posted By pomofo
My M1S upper was short-throated also. I bit the...

My M1S upper was short-throated also. I bit the bullet and bought Quickload.
Forum: 300 Whisper Ammo and Reloading 03-11-2010, 03:50 PM
Replies: 3
Views: 1,261
Posted By pomofo
Check with 2.260 just to make sure. My M1S...

Check with 2.260 just to make sure. My M1S throat is so tight that I had to load down to around 2.160.
Forum: 300 Whisper Ammo and Reloading 12-16-2009, 03:37 PM
Replies: 5
Views: 2,807
Posted By pomofo
According to Quickload, that 170-grain bullet...

According to Quickload, that 170-grain bullet with 11.0 grains of AA1680 should be doing 1100fps with 20000psi chamber pressure at ignition, and 7000psi chamber pressure when the bullet reaches the...
Forum: 300 Whisper Ammo and Reloading 12-12-2009, 10:01 PM
Replies: 5
Views: 2,807
Posted By pomofo
If you give me the bullet length and cartridge...

If you give me the bullet length and cartridge OAL for that 170 I can try to run some stuff through Quickload for you. I've worked up to 17.3 with the 175 grain Berger VLDs (OAL 2.245) and 18.1 with...
Forum: 300 Whisper Ammo and Reloading 12-08-2009, 12:04 AM
Replies: 35
Views: 9,602
Posted By pomofo
I second the idea that the bolt unlocked while...

I second the idea that the bolt unlocked while pressure was still high. What position is your gas port in? I have a carbine-length system and I was getting blown primers and enlarged primer pockets...
Forum: 300 Whisper Ammo and Reloading 04-15-2009, 04:55 PM
Replies: 5
Views: 1,600
Posted By pomofo
According to Quickload, that 17.0 grain load at a...

According to Quickload, that 17.0 grain load at a 2.250" COAL generates a little under 43000PSI. At a COAL of 2.200" (what I load to, I think that's just under the cannelure) that same load would...
Forum: 300 Whisper Ammo and Reloading 02-24-2009, 01:58 AM
Replies: 10
Views: 2,440
Posted By pomofo
I just tested a whole bunch of heavy loads this...

I just tested a whole bunch of heavy loads this weekend trying to get subsonic. Not sure if I made it or not, since it's an indoor range, but they sure were quiet compared to the known supersonic...
Forum: 300 Whisper Ammo and Reloading 02-03-2009, 01:42 AM
Replies: 6
Views: 1,651
Posted By pomofo
I've never heard of Acc. 1680 being temperature...

I've never heard of Acc. 1680 being temperature sensitive. It has the reputation, at least in the big magnum revolver cartridges, of being the type of powder you can fill the case with, get decent...
Forum: 300 Whisper Ammo and Reloading 01-15-2009, 12:42 AM
Replies: 6
Views: 3,141
Posted By pomofo
Yeah, I have a tight throat, but that only...

Yeah, I have a tight throat, but that only affects the big bullets (150+). I've fired 147 grain M80, 168 grain Prvi Match, 175 Berger VLD, and 220 grain Hornady RN, all over Acc. 1680, seated to the...
Forum: 300 Whisper Ammo and Reloading 01-10-2009, 05:29 PM
Replies: 6
Views: 3,141
Posted By pomofo
Blown primers with H110?

I seemed to have to some trouble today with some handloads loaded with H110. I started off with 110 grain VMax seated to an OAL of 2.050", and with 17.9 grains of H110, 1 of the 3 cases ejected with...
Forum: 300 Whisper Ammo and Reloading 11-08-2008, 11:38 PM
Replies: 21
Views: 3,530
Posted By pomofo
At 6.0 grains, Quickload is showing 981fps, kind...

At 6.0 grains, Quickload is showing 981fps, kind of curious that you're still getting a crack. The 11.8 grain load with 1680 that was mentioned earlier is supposed to be getting 1251fps (16"...
Forum: 300 Whisper Ammo and Reloading 11-06-2008, 02:40 AM
Replies: 21
Views: 3,530
Posted By pomofo
That 2.110" load you posted shows up in Quickload...

That 2.110" load you posted shows up in Quickload at 42339 psi, with MV of 1258 fps. I think some people suggest using a slower powder such as 1680, depending on where your gas port is located. Is...
Forum: 300 Whisper Ammo and Reloading 10-07-2008, 10:28 PM
Replies: 15
Views: 2,983
Posted By pomofo
Could there be a small variation in rifling...

Could there be a small variation in rifling twist, say 1:8.5" or something? There is often some rifling variation in the production process, with some 1:8 barrels being under 1:8 and some being...
Showing results 1 to 20 of 20

 
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