OK, I had a favorite Remington Model 7 in 7/08. It accounted for many deer and was a joy to hunt with. One year after many years of use I had a sling swivel mishap that caused my rifle to drop from my deer stand thus busting my beautiful stock and putting an end to my hunting with that rifle. I replaced it with another 7/08 in a 700 Mountain rifle. The model 7 set dormant for a few years and I read an article about a model 7 converted to a 7mm BR. I thought a 6mm BR might be a handy walking varmint gun for a Summer passion of hunting groundhog. I purchased a 12 twist Hart barrel searched for a gunsmith. My gunsmith gave me the impression the 6mmBR may exhibit feeding issues and encouraged me to chamber it in a .243 Win. Never a fan of the .243 Win I opted for the 6mm Rem. I don't hunt with it as perhaps I should but I have limited loading the 85gr Sierra Game King due to the slower twist. I have not tried a heavier round. I am now at the point to just have it rebarreled into my favorite deer round the 7/08 and a 20 inch barrel. This was a goof I would rather fix now and be able to enjoy it as I once did for many seasons. Am I crazy?
M.T.
Howdy !
I DK how long your 6mm Remington barrel currently is, or…. its profile ?
IF so desired, it may be possible ( if the barrel profile could accommodate it ),
to fore-shorten the breech end; to come up w/ a new 6mm “ wildcat “ chamber.
I have sent along pics of my “ DEEP 6 “ wildcat. This wildcat’s chamber is cut by running a 6mm Remington reamer in “ short “, for a nominal .466” base diam.
Cases are formed off 7 X 64 Brenneke parent brass. 7 x 64 has the required
.466” base diam, and is .308 bolt face compatible rimless.
With the larger diam breech end of the barrel fore-shortened as mentioned above, the
already rifled fwd portion of the barrel would remain unaffected/unaltered. The straight breech section would need to be long enough to accommodate some new; additional threads.
DEEP 6 has 51.2gr H2O cas capacity.
Included pic shows max safe charges of RL-23, RL-25, and RL -26 ( my rifle, my loads ).
Note similarity is amount of case fill.
Other pic shows DEEP 6 w/ 95 T-MK seated.
Note:
The same wildcat chambering approach can be taken using a 6mm Remington reamer, to arrive @ a new wildcat chambering approach that has case capacity between that of a 6PPC, and that of a 6BR. That benchrest-sized case is formed off .35 Remington brass,
which ( in my Wichita WBR1375 ) is .308 bolt face compatible. Again… the barrel’s straight breech section would need to be long enough to accommodate shortening that end of the barrel…. and also to be able to accept some external threads threads.
With regards,
357Mag