|
|
Post by dannewton61 on Feb 5, 2016 23:54:49 GMT -5
With 200 gr bullet
|
|
|
|
Post by dannewton61 on Feb 6, 2016 21:11:16 GMT -5
The neck length after trimming to 1.8 is .320 long
|
|
|
|
Post by drs on Feb 7, 2016 5:36:40 GMT -5
I've always wondered if a Moslin M-44 could be re-barreled for such rimmed cartridges like: the .30-30, .444 Marlin, or even cartridges like the .25-35 & the .219 Zipper. It's not to hard to rebarrel a mosin, like any bolt gun. The only thing that's a little bit of a problem is the extractor cut. It's good you're developing a new shorten length cartridge, based on the original cartridge (7.62 X 54R m/m). Indicating that you need not alter other parts of the rifle other than re-barreling. The only thing I am curious about is will this shorten cartridge feed normally from the Moslin rifle? |
|
|
|
Post by dannewton61 on Feb 7, 2016 6:13:28 GMT -5
Yes
|
|
|
|
Post by dannewton61 on Feb 10, 2016 17:40:04 GMT -5
I was trying to weigh the water capacity of the 358 mosin wildcat and it seems to be about 55 gr. , but I also weighed a 308 case and it seemed the same. What is the accurate way of doing this?
|
|
|
|
Post by esshup on Feb 11, 2016 11:33:15 GMT -5
I was trying to weigh the water capacity of the 358 mosin wildcat and it seems to be about 55 gr. , but I also weighed a 308 case and it seemed the same. What is the accurate way of doing this? To determine the true internal capacity of your cases, first weigh an empty cartridge case, then fill the case with water (all the way to the top of the neck) and weigh the case again. The difference in weight is your H20 capacity in grains. But how do you keep the H20 from flowing out the bottom? When measuring fired, unsized cases, you can simply leave the spent primer in the pocket. However, if you want to measure new brass or “as-FL sized” cases that have been deprimed, you’d have to insert a spent primer to “stem the tide”. I use an eyedropper to get the meniscus equal between the cases. |
|
|
|
Post by dannewton61 on Feb 11, 2016 14:03:50 GMT -5
OK thanks
|
|
|
|
Post by dannewton61 on Feb 12, 2016 16:16:50 GMT -5
I weighed the cases again I think I did it right this time. I got about 56 to 57 gr. Of water. About the same as a 308 case
|
|
|
|
Post by oldhoyt on Feb 18, 2016 12:10:55 GMT -5
Something is not computing.
The 7.62x54 case is 2.114" total length. The neck portion of the case measures .350" In order to cut the case down to 1.800, 0.314" must be removed and this all comes from the neck. Therefore you have about 0.036 neck left to hold the bullet. UNLESS the case dimensions I am using are incorrect.
By comparison, "short" versions of the 35 Remington and the 358 Winchester have about 0.120" and 0.150" of neck, respectively, remaining after trimming to 1.800". Not that this matters much. I'm just thinking that there may be issues with runout or setback, with such a small amount of neck. A modified Lee FCD could help with setback.
|
|
|
|
Post by drs on Feb 18, 2016 13:57:40 GMT -5
Something is not computing. The 7.62x54 case is 2.114" total length. The neck portion of the case measures .350" In order to cut the case down to 1.800, 0.314" must be removed and this all comes from the neck. Therefore you have about 0.036 neck left to hold the bullet. UNLESS the case dimensions I am using are incorrect. By comparison, "short" versions of the 35 Remington and the 358 Winchester have about 0.120" and 0.150" of neck, respectively, remaining after trimming to 1.800". Not that this matters much. I'm just thinking that there may be issues with runout or setback, with such a small amount of neck. A modified Lee FCD could help with setback. I think that this wildcat cartridge based on a 7.62 X 54 m/m would work better with a shorten case necked-up to at least .430" then it would be more of a straight case or slightly bottle neck. This size bullet wouldn't necessary need or require to have a min. or max. neck length. |
|
|
|
Post by oldhoyt on Feb 18, 2016 15:58:35 GMT -5
The diameter at the shoulder is 0.457. With a bullet diameter of 0.358, as the OP is doing, there is a shoulder needed.
There are some good bullets at 0.431, and this would leave a very slight shoulder. I don't know enough about reloading to comment on the headspace implications of such a slight shoulder.
Just checked and this rimmed cartridge does headspace on the rim, so no real issues with the slight shoulder that I can see.
|
|
|
|
Post by dannewton61 on Feb 18, 2016 19:18:45 GMT -5
The case is 1.8 long but the neck is .320 long. The case is blown out with AI shoulder and a minimum taper.  |
|
|
|
Post by bullseye69 on Feb 18, 2016 19:35:24 GMT -5
Thats pretty good looking.
Did you have a reamer made for the chambering?
How much bigger at the base above the rim is that compared to a 30-30 case?
|
|
|
|
Post by dannewton61 on Feb 18, 2016 20:48:30 GMT -5
I had a reamer made, don't know about the 30/30 case
|
|
|
|
Post by cedarthicket on Feb 18, 2016 20:48:36 GMT -5
|
|
|
|
Post by bullseye69 on Feb 18, 2016 21:20:44 GMT -5
Ya I got that book but I'm at work so can't look anything up gun related. Will look when i get home if I remember. Fat chance LOL |
|
|
|
Post by drs on Feb 19, 2016 5:21:11 GMT -5
The case is 1.8 long but the neck is .320 long. The case is blown out with AI shoulder and a minimum taper. From the looks of your wildcat case length, there seems to be an adequate neck to secure the bullet.  |
|
|
|
Post by oldhoyt on Feb 19, 2016 7:42:33 GMT -5
Makes sense now. You've done more than just trim to 1.800. Your cartridge is essentially the 358 Hoosier using the 7.62 x 54r as the parent case instead of the 358 Win.
I've seen load data for the 358 Hoosier using Reloader 7, Reloader 10x, Hodgdon 322, Hodgdon 4198 and Norma 200. These are all faster than 4895. I'm happy with 43 gr Hodgdon 322 and Speer 180 gr FN, but honestly I've done very little testing. The group well at 100 yds and they do a number on deer.
|
|
|
|
Post by dannewton61 on Feb 19, 2016 16:15:18 GMT -5
Thanks, it's about 5/16 and seems to be very accurate
|
|
|
|
Post by dannewton61 on Feb 19, 2016 16:19:03 GMT -5
I need to test with faster powders but I'm pretty happy with the speed with h4895
|
|
