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Recent content by Ken Howell

  1. K

    Two HOT .224 cartridges

    Elmo, I haven't loaded any .30 cartridge, of any pedigree or lineage, with any powder, since long before the Vihtavuori powders showed up on these shores.
  2. K

    Two HOT .224 cartridges

    WD, you have completely stumped me. I don't have the foggiest idea what you're talking about. Neither "bad day," "belittle," "anger," nor "customer" applies to anything I can see or think of in this dialogue. "Marketing?" "Public relations?" I've never been involved in marketing except as a...
  3. K

    Two HOT .224 cartridges

    "... what size groups do these 2 rifles produce at 100 or 200yds? Is the accuracy capability better in one than the other?" Accuracy depends more on the rifle than on the cartridge. The .22-6mm and .220 Howell rifles that my friends and I have are one-holers. The accuracy potential is greater...
  4. K

    Two HOT .224 cartridges

    I goofed. Should've gone to bed earlier that night. Yawning apparently lets air into the brain. The first comparison — both cartridges at 3,500 ft/sec — should read thus: This part's right: > In the .22-6mm Remington (gross...
  5. K

    Two HOT .224 cartridges

    A couple of my friends shoot and are quite happy with the .22-6mm Remington, a cartridge that's very nearly (but not quite) the same as my .220 Howell. They've both asked me to compare some ballistics of our two cartridges. Somebody in one of these forums asked the same thing (I can't remember...
  6. K

    .300 WSM — SAAMI's maximum case dimensions

    Just got the SAAMI drawings for the .300 Winchester Short Magnum case and chamber. Here are the maximum CASE dimensions. Chamber dimensions, of course, are altogether different. rim diameter (Ø) — 0.535 inch base Ø at 0.200 inch from breech reference line (BRL) — 0.5550 inch shoulder Ø at...
  7. K

    Winchester Short Magnum NOT based on .348 Winchester

    Just had a long chat with an old pal at Winchester ammo this afternoon (NO, you skeptics, he's NOT a floor-sweeper — he's one of the management wheels!). ¦o) Asked him about the conjecture out here that Winchester had modified the .348 Winchester case to come up with the new short magnum. No...
  8. K

    Comparing cartridges & loads — Howell's short method

    How could I have made it any plainer, Dan? I thought "Muzzle velocity alone certainly is no way to rate, relate, or compare cartridges' down-range performance" clearly established what my simple, rough method is intended to replace. Also thought "Here's a simple 'quick and dirty' method of...
  9. K

    Comparing cartridges & loads — Howell's short method

    Dan, I always assume that my average reader is at least as intelligent as I am and that a lot of my readers are much more intelligent than I am. So I assume that none of them is likely to have trouble deciding whether a .14 Flea or a 1.25 Barker-Butler Bear-Thumper is better for his purposes...
  10. K

    Comparing cartridges & loads — Howell's short method

    Muzzle velocity alone certainly is no way to rate, relate, or compare cartridges' down-range performance. Here's a simple "quick and dirty" method of roughly comparing the down-range performance of two cartridges or two loads with different bullets in the same cartridge. This technique doesn't...
  11. K

    Ballistic Coefficient

    Thanks, Dan! You're absolutely right — that's what I meant to say, and I'm glad you caught my mistake and corrected it. I can't figure out which is worse — thinking faster than I can type or typing faster than I can think. Tried both. Can't tell.
  12. K

    .220 Howell vs .243 Winchester

    WD, the .220 Howell was specifically designed to be loaded to significantly lower peak pressures (45,000 to 48,000 copper units, 49,000 to 51,000 lb/sq in.) than the SAAMI maximums (60,000 lb/sq in. and up) for many comparable factory cartridges. So anything that'll hold a hot .220 Swift...
  13. K

    .220 Howell vs .243 Winchester

    7-, 8-, or 9-inch twist, Mike. I think the 9-inch is probably the best choice, all things considered.
  14. K

    Ballistic Coefficient

    The ballistic coefficient (BC) of a small-arms bullet is a figure that shows how well it holds its velocity, energy, trajectory, etc, down-range — as compared with a thoroughly studied standard projectile (typically the G1 artillery projectile). The three factors that determine a bullet's BC...
  15. K

    .220 Howell vs .243 Winchester

    One of the Good Guys on another board asked me to compare the down-range performance of his .243 Winchester load and a typical .220 Howell load. It occurred to me that some of my buddies here may be interested in the same data, so here they are. bullets — .220 Howell, 75-grain A-Max — .243...
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