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Post by sew on Feb 2, 2021 14:58:59 GMT -5
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Post by sew on Feb 2, 2021 15:02:15 GMT -5
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Post by sew on Feb 2, 2021 15:10:09 GMT -5
While my QL was with a 200G SST and the PT was with a 195B, look at how closely QL and the PT correlate. And with Deadeer’s MV of 2,800’/sec.
Of note, 2,800’/sec is being obtained with well below 35K psi. Even the much ballistically superior 228g AccuMax would likely not go over 35K psi. A 45 cal retrofit or breakopen shooting a 228g bullet with a 0.34 BC @ 2800’/sec would easily be a 300 yard setup, if not more. Deadeer’s load with a 195Bs certainly is adequate out past 200 yards.
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Post by deadeer on Feb 3, 2021 0:59:38 GMT -5
Yes, 300yds is fine on paper. Groups are 1-1.5 moa, and drop is 8-9" with 200yd zero. Luckily I have 4# N120 left, and this is it's only use.
A buddy has exact setup as I do, and he shoots 70gr H4198. According to everybody in the past, that's a sabot blowing load, but he said he has never blown one.
Both our barrels are hand lapped PacNors.
My 700ml wears same barrel but a lot heavier profile. I have 70gr N120 with no problem. That's over 3k fps, and never a blown sabot. Good tight fitting loads, cool barrel, 100% success. I do shoot sabotless in this one now, as it's my field gun on a bipod.
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Post by jims on Feb 3, 2021 7:50:45 GMT -5
There is a lot of good information here. Well presented.
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Post by sew on Feb 3, 2021 8:27:17 GMT -5
I’ve presented the 45 cal saboted/40 cal bullet information for those not familiar with saboted shooting, etc. I’ll still “play” with saboted shooting in Richard’s former 45. However, I’ve gone strickly 40 cal for hunting. 10ML2/40 PN, Jimbob’s full sized 700ML/40 RC and the future ultra light 40. To me, 40 cal bullets’ advantages are significant (for hunting - at least for how I hunt) . If I used a 45 for hunting and wanted to hunt at and beyond 250-300 yards, I’d probably stay with bore sized shooting. I only bring up the saboted shooting for those who aren’t aware that it is truly viable accuracy-wise and can have less recoil, flatter trajectory and less pressure than bore sized shooting, especially in lightly constructed 45 cal rifles. Of course, saboted shooting will not match the ultimate accuracy of bore sized shooting.
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Post by deadeer on Feb 3, 2021 9:50:54 GMT -5
We are limited to 45cal minimum bore size in our Indiana mz season. 40cal would be ok in our gun season, but we now can use hpr, so no reason for me to explore further.
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Post by billyboy on Feb 3, 2021 10:31:20 GMT -5
There is a lot of good information here. Well presented. Lots of Benefits of this Load! Low Pressure Low Recoil High Velocity 100% Bullet Weight Retention Inexpensive Components
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Post by olegburn on Feb 8, 2021 1:18:26 GMT -5
I’ve presented the 45 cal saboted/40 cal bullet information for those not familiar with saboted shooting, etc. I’ll still “play” with saboted shooting in Richard’s former 45. However, I’ve gone strickly 40 cal for hunting. 10ML2/40 PN, Jimbob’s full sized 700ML/40 RC and the future ultra light 40. To me, 40 cal bullets’ advantages are significant (for hunting - at least for how I hunt) . If I used a 45 for hunting and wanted to hunt at and beyond 250-300 yards, I’d probably stay with bore sized shooting. I only bring up the saboted shooting for those who aren’t aware that it is truly viable accuracy-wise and can have less recoil, flatter trajectory and less pressure than bore sized shooting, especially in lightly constructed 45 cal rifles. Of course, saboted shooting will not match the ultimate accuracy of bore sized shooting. Would be nice if you will share your Ultra Light 40 project with us.
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Post by sew on Feb 8, 2021 9:12:24 GMT -5
I’ve presented the 45 cal saboted/40 cal bullet information for those not familiar with saboted shooting, etc. I’ll still “play” with saboted shooting in Richard’s former 45. However, I’ve gone strickly 40 cal for hunting. 10ML2/40 PN, Jimbob’s full sized 700ML/40 RC and the future ultra light 40. To me, 40 cal bullets’ advantages are significant (for hunting - at least for how I hunt) . If I used a 45 for hunting and wanted to hunt at and beyond 250-300 yards, I’d probably stay with bore sized shooting. I only bring up the saboted shooting for those who aren’t aware that it is truly viable accuracy-wise and can have less recoil, flatter trajectory and less pressure than bore sized shooting, especially in lightly constructed 45 cal rifles. Of course, saboted shooting will not match the ultimate accuracy of bore sized shooting. Would be nice if you will share your Ultra Light 40 project with us. I’m waiting for the entire project to be finished. Availability of the 1st choice barrel is questionable. At 73, and walking long distances carrying my 16 1/2# 40 cal, I want a really light, 40 cal woods rifle for 0-300 yard hunting.
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Post by jims on Feb 8, 2021 19:11:13 GMT -5
I will be following with interest this build.
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Post by hillbill on Feb 8, 2021 20:32:08 GMT -5
I have a clone of my Bolt gun in .45 cal in the works now, it should be slightly lighter due to the larger bore size but still robust enough to handle 300s at 2750. should be a good hunting rig.
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Post by sew on Feb 9, 2021 10:20:54 GMT -5
There is a significant weight gain in a 40 vs a 45 of the same external dimensions. Significant! My 40’s external dimensions have been trimmed. Bill, I can see it now: a 228g AccuMax/HLBS/Maine WW/3,000’/sec.
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Post by olegburn on Feb 10, 2021 23:13:08 GMT -5
What weight target you will be aiming for? I converted CVA Hunter because i did not enjoy carrying SavML2 up and down hills anymore. I stalk deer a lot and at the end of the day my arms be hurting. Hunter is real nice carry. Haven't shot anything with it yet
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Post by sew on Feb 11, 2021 10:33:26 GMT -5
8#. Not including the 2x8 Lighted Duralyt or the 2x10 Conquest. I think its harder to make a light 40 verses a light 45. The barrel dimensions have a degree of compromise between robustness and lightness. I think barrel robustness often is to provide safety in spite of double loads. My plans are to shoot either 228 AccuMaxes or, hopefully, full sized 253 Hammers @ moderate speeds. DI should allow for slightly less powder loads which will further reduce recoil, likely a negligible reduction (<5%).
This will be my light rifle which I’ll try to not make it a do everything rifle. I have the HEAVY 40 cal for reaching way out.
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Post by olegburn on Feb 11, 2021 13:33:39 GMT -5
I will be all eyes and ears.
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